mirror of
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3d85c69a0b
This reverts CLs 274450 and 279492, except for the new tests.
The new race test is changed to skip, as it now fails.
We can try again for 1.17.
Original CL descriptions:
html/template: attach functions to namespace
The text/template functions are stored in a data structure shared by
all related templates, so do the same with the original, unwrapped,
functions on the html/template side.
html/template: avoid race when escaping updates template
For #39807
Fixes #43855
Change-Id: I2ce91321ada06ea496a982aefe170eb5af9ba847
Reviewed-on: https://go-review.googlesource.com/c/go/+/285957
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
1833 lines
57 KiB
Go
1833 lines
57 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Tests for template execution, copied from text/template.
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package template
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import (
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"bytes"
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"errors"
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"flag"
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"fmt"
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"io"
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"reflect"
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"strings"
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"sync"
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"testing"
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"text/template"
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)
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var debug = flag.Bool("debug", false, "show the errors produced by the tests")
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// T has lots of interesting pieces to use to test execution.
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type T struct {
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// Basics
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True bool
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I int
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U16 uint16
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X, S string
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FloatZero float64
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ComplexZero complex128
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// Nested structs.
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U *U
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// Struct with String method.
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V0 V
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V1, V2 *V
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// Struct with Error method.
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W0 W
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W1, W2 *W
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// Slices
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SI []int
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SICap []int
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SIEmpty []int
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SB []bool
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// Arrays
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AI [3]int
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// Maps
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MSI map[string]int
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MSIone map[string]int // one element, for deterministic output
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MSIEmpty map[string]int
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MXI map[interface{}]int
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MII map[int]int
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MI32S map[int32]string
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MI64S map[int64]string
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MUI32S map[uint32]string
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MUI64S map[uint64]string
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MI8S map[int8]string
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MUI8S map[uint8]string
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SMSI []map[string]int
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// Empty interfaces; used to see if we can dig inside one.
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Empty0 interface{} // nil
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Empty1 interface{}
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Empty2 interface{}
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Empty3 interface{}
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Empty4 interface{}
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// Non-empty interfaces.
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NonEmptyInterface I
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NonEmptyInterfacePtS *I
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NonEmptyInterfaceNil I
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NonEmptyInterfaceTypedNil I
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// Stringer.
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Str fmt.Stringer
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Err error
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// Pointers
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PI *int
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PS *string
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PSI *[]int
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NIL *int
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// Function (not method)
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BinaryFunc func(string, string) string
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VariadicFunc func(...string) string
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VariadicFuncInt func(int, ...string) string
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NilOKFunc func(*int) bool
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ErrFunc func() (string, error)
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PanicFunc func() string
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// Template to test evaluation of templates.
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Tmpl *Template
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// Unexported field; cannot be accessed by template.
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unexported int
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}
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type S []string
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func (S) Method0() string {
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return "M0"
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}
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type U struct {
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V string
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}
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type V struct {
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j int
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}
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func (v *V) String() string {
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if v == nil {
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return "nilV"
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}
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return fmt.Sprintf("<%d>", v.j)
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}
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type W struct {
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k int
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}
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func (w *W) Error() string {
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if w == nil {
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return "nilW"
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}
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return fmt.Sprintf("[%d]", w.k)
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}
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var siVal = I(S{"a", "b"})
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var tVal = &T{
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True: true,
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I: 17,
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U16: 16,
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X: "x",
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S: "xyz",
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U: &U{"v"},
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V0: V{6666},
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V1: &V{7777}, // leave V2 as nil
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W0: W{888},
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W1: &W{999}, // leave W2 as nil
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SI: []int{3, 4, 5},
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SICap: make([]int, 5, 10),
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AI: [3]int{3, 4, 5},
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SB: []bool{true, false},
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MSI: map[string]int{"one": 1, "two": 2, "three": 3},
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MSIone: map[string]int{"one": 1},
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MXI: map[interface{}]int{"one": 1},
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MII: map[int]int{1: 1},
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MI32S: map[int32]string{1: "one", 2: "two"},
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MI64S: map[int64]string{2: "i642", 3: "i643"},
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MUI32S: map[uint32]string{2: "u322", 3: "u323"},
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MUI64S: map[uint64]string{2: "ui642", 3: "ui643"},
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MI8S: map[int8]string{2: "i82", 3: "i83"},
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MUI8S: map[uint8]string{2: "u82", 3: "u83"},
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SMSI: []map[string]int{
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{"one": 1, "two": 2},
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{"eleven": 11, "twelve": 12},
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},
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Empty1: 3,
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Empty2: "empty2",
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Empty3: []int{7, 8},
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Empty4: &U{"UinEmpty"},
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NonEmptyInterface: &T{X: "x"},
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NonEmptyInterfacePtS: &siVal,
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NonEmptyInterfaceTypedNil: (*T)(nil),
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Str: bytes.NewBuffer([]byte("foozle")),
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Err: errors.New("erroozle"),
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PI: newInt(23),
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PS: newString("a string"),
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PSI: newIntSlice(21, 22, 23),
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BinaryFunc: func(a, b string) string { return fmt.Sprintf("[%s=%s]", a, b) },
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VariadicFunc: func(s ...string) string { return fmt.Sprint("<", strings.Join(s, "+"), ">") },
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VariadicFuncInt: func(a int, s ...string) string { return fmt.Sprint(a, "=<", strings.Join(s, "+"), ">") },
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NilOKFunc: func(s *int) bool { return s == nil },
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ErrFunc: func() (string, error) { return "bla", nil },
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PanicFunc: func() string { panic("test panic") },
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Tmpl: Must(New("x").Parse("test template")), // "x" is the value of .X
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}
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var tSliceOfNil = []*T{nil}
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// A non-empty interface.
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type I interface {
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Method0() string
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}
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var iVal I = tVal
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// Helpers for creation.
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func newInt(n int) *int {
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return &n
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}
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func newString(s string) *string {
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return &s
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}
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func newIntSlice(n ...int) *[]int {
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p := new([]int)
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*p = make([]int, len(n))
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copy(*p, n)
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return p
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}
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// Simple methods with and without arguments.
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func (t *T) Method0() string {
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return "M0"
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}
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func (t *T) Method1(a int) int {
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return a
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}
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func (t *T) Method2(a uint16, b string) string {
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return fmt.Sprintf("Method2: %d %s", a, b)
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}
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func (t *T) Method3(v interface{}) string {
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return fmt.Sprintf("Method3: %v", v)
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}
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func (t *T) Copy() *T {
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n := new(T)
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*n = *t
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return n
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}
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func (t *T) MAdd(a int, b []int) []int {
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v := make([]int, len(b))
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for i, x := range b {
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v[i] = x + a
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}
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return v
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}
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var myError = errors.New("my error")
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// MyError returns a value and an error according to its argument.
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func (t *T) MyError(error bool) (bool, error) {
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if error {
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return true, myError
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}
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return false, nil
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}
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// A few methods to test chaining.
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func (t *T) GetU() *U {
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return t.U
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}
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func (u *U) TrueFalse(b bool) string {
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if b {
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return "true"
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}
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return ""
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}
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func typeOf(arg interface{}) string {
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return fmt.Sprintf("%T", arg)
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}
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type execTest struct {
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name string
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input string
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output string
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data interface{}
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ok bool
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}
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// bigInt and bigUint are hex string representing numbers either side
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// of the max int boundary.
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// We do it this way so the test doesn't depend on ints being 32 bits.
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var (
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bigInt = fmt.Sprintf("0x%x", int(1<<uint(reflect.TypeOf(0).Bits()-1)-1))
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bigUint = fmt.Sprintf("0x%x", uint(1<<uint(reflect.TypeOf(0).Bits()-1)))
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)
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var execTests = []execTest{
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// Trivial cases.
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{"empty", "", "", nil, true},
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{"text", "some text", "some text", nil, true},
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{"nil action", "{{nil}}", "", nil, false},
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// Ideal constants.
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{"ideal int", "{{typeOf 3}}", "int", 0, true},
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{"ideal float", "{{typeOf 1.0}}", "float64", 0, true},
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{"ideal exp float", "{{typeOf 1e1}}", "float64", 0, true},
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{"ideal complex", "{{typeOf 1i}}", "complex128", 0, true},
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{"ideal int", "{{typeOf " + bigInt + "}}", "int", 0, true},
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{"ideal too big", "{{typeOf " + bigUint + "}}", "", 0, false},
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{"ideal nil without type", "{{nil}}", "", 0, false},
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// Fields of structs.
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{".X", "-{{.X}}-", "-x-", tVal, true},
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{".U.V", "-{{.U.V}}-", "-v-", tVal, true},
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{".unexported", "{{.unexported}}", "", tVal, false},
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// Fields on maps.
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{"map .one", "{{.MSI.one}}", "1", tVal, true},
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{"map .two", "{{.MSI.two}}", "2", tVal, true},
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{"map .NO", "{{.MSI.NO}}", "", tVal, true}, // NOTE: <no value> in text/template
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{"map .one interface", "{{.MXI.one}}", "1", tVal, true},
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{"map .WRONG args", "{{.MSI.one 1}}", "", tVal, false},
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{"map .WRONG type", "{{.MII.one}}", "", tVal, false},
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// Dots of all kinds to test basic evaluation.
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{"dot int", "<{{.}}>", "<13>", 13, true},
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{"dot uint", "<{{.}}>", "<14>", uint(14), true},
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{"dot float", "<{{.}}>", "<15.1>", 15.1, true},
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{"dot bool", "<{{.}}>", "<true>", true, true},
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{"dot complex", "<{{.}}>", "<(16.2-17i)>", 16.2 - 17i, true},
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{"dot string", "<{{.}}>", "<hello>", "hello", true},
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{"dot slice", "<{{.}}>", "<[-1 -2 -3]>", []int{-1, -2, -3}, true},
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{"dot map", "<{{.}}>", "<map[two:22]>", map[string]int{"two": 22}, true},
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{"dot struct", "<{{.}}>", "<{7 seven}>", struct {
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a int
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b string
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}{7, "seven"}, true},
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// Variables.
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{"$ int", "{{$}}", "123", 123, true},
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{"$.I", "{{$.I}}", "17", tVal, true},
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{"$.U.V", "{{$.U.V}}", "v", tVal, true},
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{"declare in action", "{{$x := $.U.V}}{{$x}}", "v", tVal, true},
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{"simple assignment", "{{$x := 2}}{{$x = 3}}{{$x}}", "3", tVal, true},
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{"nested assignment",
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"{{$x := 2}}{{if true}}{{$x = 3}}{{end}}{{$x}}",
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"3", tVal, true},
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{"nested assignment changes the last declaration",
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"{{$x := 1}}{{if true}}{{$x := 2}}{{if true}}{{$x = 3}}{{end}}{{end}}{{$x}}",
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"1", tVal, true},
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// Type with String method.
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{"V{6666}.String()", "-{{.V0}}-", "-{6666}-", tVal, true}, // NOTE: -<6666>- in text/template
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{"&V{7777}.String()", "-{{.V1}}-", "-<7777>-", tVal, true},
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{"(*V)(nil).String()", "-{{.V2}}-", "-nilV-", tVal, true},
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// Type with Error method.
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{"W{888}.Error()", "-{{.W0}}-", "-{888}-", tVal, true}, // NOTE: -[888] in text/template
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{"&W{999}.Error()", "-{{.W1}}-", "-[999]-", tVal, true},
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{"(*W)(nil).Error()", "-{{.W2}}-", "-nilW-", tVal, true},
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// Pointers.
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{"*int", "{{.PI}}", "23", tVal, true},
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{"*string", "{{.PS}}", "a string", tVal, true},
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{"*[]int", "{{.PSI}}", "[21 22 23]", tVal, true},
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{"*[]int[1]", "{{index .PSI 1}}", "22", tVal, true},
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{"NIL", "{{.NIL}}", "<nil>", tVal, true},
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// Empty interfaces holding values.
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{"empty nil", "{{.Empty0}}", "", tVal, true}, // NOTE: <no value> in text/template
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{"empty with int", "{{.Empty1}}", "3", tVal, true},
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{"empty with string", "{{.Empty2}}", "empty2", tVal, true},
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{"empty with slice", "{{.Empty3}}", "[7 8]", tVal, true},
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{"empty with struct", "{{.Empty4}}", "{UinEmpty}", tVal, true},
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{"empty with struct, field", "{{.Empty4.V}}", "UinEmpty", tVal, true},
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// Edge cases with <no value> with an interface value
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{"field on interface", "{{.foo}}", "", nil, true}, // NOTE: <no value> in text/template
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{"field on parenthesized interface", "{{(.).foo}}", "", nil, true}, // NOTE: <no value> in text/template
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// Issue 31810: Parenthesized first element of pipeline with arguments.
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// See also TestIssue31810.
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{"unparenthesized non-function", "{{1 2}}", "", nil, false},
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{"parenthesized non-function", "{{(1) 2}}", "", nil, false},
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{"parenthesized non-function with no args", "{{(1)}}", "1", nil, true}, // This is fine.
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// Method calls.
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{".Method0", "-{{.Method0}}-", "-M0-", tVal, true},
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{".Method1(1234)", "-{{.Method1 1234}}-", "-1234-", tVal, true},
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{".Method1(.I)", "-{{.Method1 .I}}-", "-17-", tVal, true},
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{".Method2(3, .X)", "-{{.Method2 3 .X}}-", "-Method2: 3 x-", tVal, true},
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{".Method2(.U16, `str`)", "-{{.Method2 .U16 `str`}}-", "-Method2: 16 str-", tVal, true},
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{".Method2(.U16, $x)", "{{if $x := .X}}-{{.Method2 .U16 $x}}{{end}}-", "-Method2: 16 x-", tVal, true},
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{".Method3(nil constant)", "-{{.Method3 nil}}-", "-Method3: <nil>-", tVal, true},
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{".Method3(nil value)", "-{{.Method3 .MXI.unset}}-", "-Method3: <nil>-", tVal, true},
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{"method on var", "{{if $x := .}}-{{$x.Method2 .U16 $x.X}}{{end}}-", "-Method2: 16 x-", tVal, true},
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{"method on chained var",
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"{{range .MSIone}}{{if $.U.TrueFalse $.True}}{{$.U.TrueFalse $.True}}{{else}}WRONG{{end}}{{end}}",
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"true", tVal, true},
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{"chained method",
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"{{range .MSIone}}{{if $.GetU.TrueFalse $.True}}{{$.U.TrueFalse $.True}}{{else}}WRONG{{end}}{{end}}",
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"true", tVal, true},
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{"chained method on variable",
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"{{with $x := .}}{{with .SI}}{{$.GetU.TrueFalse $.True}}{{end}}{{end}}",
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"true", tVal, true},
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{".NilOKFunc not nil", "{{call .NilOKFunc .PI}}", "false", tVal, true},
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{".NilOKFunc nil", "{{call .NilOKFunc nil}}", "true", tVal, true},
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{"method on nil value from slice", "-{{range .}}{{.Method1 1234}}{{end}}-", "-1234-", tSliceOfNil, true},
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{"method on typed nil interface value", "{{.NonEmptyInterfaceTypedNil.Method0}}", "M0", tVal, true},
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// Function call builtin.
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{".BinaryFunc", "{{call .BinaryFunc `1` `2`}}", "[1=2]", tVal, true},
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{".VariadicFunc0", "{{call .VariadicFunc}}", "<>", tVal, true},
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{".VariadicFunc2", "{{call .VariadicFunc `he` `llo`}}", "<he+llo>", tVal, true},
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{".VariadicFuncInt", "{{call .VariadicFuncInt 33 `he` `llo`}}", "33=<he+llo>", tVal, true},
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{"if .BinaryFunc call", "{{ if .BinaryFunc}}{{call .BinaryFunc `1` `2`}}{{end}}", "[1=2]", tVal, true},
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{"if not .BinaryFunc call", "{{ if not .BinaryFunc}}{{call .BinaryFunc `1` `2`}}{{else}}No{{end}}", "No", tVal, true},
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{"Interface Call", `{{stringer .S}}`, "foozle", map[string]interface{}{"S": bytes.NewBufferString("foozle")}, true},
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{".ErrFunc", "{{call .ErrFunc}}", "bla", tVal, true},
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{"call nil", "{{call nil}}", "", tVal, false},
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// Erroneous function calls (check args).
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{".BinaryFuncTooFew", "{{call .BinaryFunc `1`}}", "", tVal, false},
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{".BinaryFuncTooMany", "{{call .BinaryFunc `1` `2` `3`}}", "", tVal, false},
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{".BinaryFuncBad0", "{{call .BinaryFunc 1 3}}", "", tVal, false},
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{".BinaryFuncBad1", "{{call .BinaryFunc `1` 3}}", "", tVal, false},
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{".VariadicFuncBad0", "{{call .VariadicFunc 3}}", "", tVal, false},
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{".VariadicFuncIntBad0", "{{call .VariadicFuncInt}}", "", tVal, false},
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{".VariadicFuncIntBad`", "{{call .VariadicFuncInt `x`}}", "", tVal, false},
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{".VariadicFuncNilBad", "{{call .VariadicFunc nil}}", "", tVal, false},
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// Pipelines.
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{"pipeline", "-{{.Method0 | .Method2 .U16}}-", "-Method2: 16 M0-", tVal, true},
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{"pipeline func", "-{{call .VariadicFunc `llo` | call .VariadicFunc `he` }}-", "-<he+<llo>>-", tVal, true},
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// Nil values aren't missing arguments.
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{"nil pipeline", "{{ .Empty0 | call .NilOKFunc }}", "true", tVal, true},
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{"nil call arg", "{{ call .NilOKFunc .Empty0 }}", "true", tVal, true},
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{"bad nil pipeline", "{{ .Empty0 | .VariadicFunc }}", "", tVal, false},
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// Parenthesized expressions
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{"parens in pipeline", "{{printf `%d %d %d` (1) (2 | add 3) (add 4 (add 5 6))}}", "1 5 15", tVal, true},
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// Parenthesized expressions with field accesses
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{"parens: $ in paren", "{{($).X}}", "x", tVal, true},
|
|
{"parens: $.GetU in paren", "{{($.GetU).V}}", "v", tVal, true},
|
|
{"parens: $ in paren in pipe", "{{($ | echo).X}}", "x", tVal, true},
|
|
{"parens: spaces and args", `{{(makemap "up" "down" "left" "right").left}}`, "right", tVal, true},
|
|
|
|
// If.
|
|
{"if true", "{{if true}}TRUE{{end}}", "TRUE", tVal, true},
|
|
{"if false", "{{if false}}TRUE{{else}}FALSE{{end}}", "FALSE", tVal, true},
|
|
{"if nil", "{{if nil}}TRUE{{end}}", "", tVal, false},
|
|
{"if on typed nil interface value", "{{if .NonEmptyInterfaceTypedNil}}TRUE{{ end }}", "", tVal, true},
|
|
{"if 1", "{{if 1}}NON-ZERO{{else}}ZERO{{end}}", "NON-ZERO", tVal, true},
|
|
{"if 0", "{{if 0}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"if 1.5", "{{if 1.5}}NON-ZERO{{else}}ZERO{{end}}", "NON-ZERO", tVal, true},
|
|
{"if 0.0", "{{if .FloatZero}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"if 1.5i", "{{if 1.5i}}NON-ZERO{{else}}ZERO{{end}}", "NON-ZERO", tVal, true},
|
|
{"if 0.0i", "{{if .ComplexZero}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"if emptystring", "{{if ``}}NON-EMPTY{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"if string", "{{if `notempty`}}NON-EMPTY{{else}}EMPTY{{end}}", "NON-EMPTY", tVal, true},
|
|
{"if emptyslice", "{{if .SIEmpty}}NON-EMPTY{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"if slice", "{{if .SI}}NON-EMPTY{{else}}EMPTY{{end}}", "NON-EMPTY", tVal, true},
|
|
{"if emptymap", "{{if .MSIEmpty}}NON-EMPTY{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"if map", "{{if .MSI}}NON-EMPTY{{else}}EMPTY{{end}}", "NON-EMPTY", tVal, true},
|
|
{"if map unset", "{{if .MXI.none}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"if map not unset", "{{if not .MXI.none}}ZERO{{else}}NON-ZERO{{end}}", "ZERO", tVal, true},
|
|
{"if $x with $y int", "{{if $x := true}}{{with $y := .I}}{{$x}},{{$y}}{{end}}{{end}}", "true,17", tVal, true},
|
|
{"if $x with $x int", "{{if $x := true}}{{with $x := .I}}{{$x}},{{end}}{{$x}}{{end}}", "17,true", tVal, true},
|
|
{"if else if", "{{if false}}FALSE{{else if true}}TRUE{{end}}", "TRUE", tVal, true},
|
|
{"if else chain", "{{if eq 1 3}}1{{else if eq 2 3}}2{{else if eq 3 3}}3{{end}}", "3", tVal, true},
|
|
|
|
// Print etc.
|
|
{"print", `{{print "hello, print"}}`, "hello, print", tVal, true},
|
|
{"print 123", `{{print 1 2 3}}`, "1 2 3", tVal, true},
|
|
{"print nil", `{{print nil}}`, "<nil>", tVal, true},
|
|
{"println", `{{println 1 2 3}}`, "1 2 3\n", tVal, true},
|
|
{"printf int", `{{printf "%04x" 127}}`, "007f", tVal, true},
|
|
{"printf float", `{{printf "%g" 3.5}}`, "3.5", tVal, true},
|
|
{"printf complex", `{{printf "%g" 1+7i}}`, "(1+7i)", tVal, true},
|
|
{"printf string", `{{printf "%s" "hello"}}`, "hello", tVal, true},
|
|
{"printf function", `{{printf "%#q" zeroArgs}}`, "`zeroArgs`", tVal, true},
|
|
{"printf field", `{{printf "%s" .U.V}}`, "v", tVal, true},
|
|
{"printf method", `{{printf "%s" .Method0}}`, "M0", tVal, true},
|
|
{"printf dot", `{{with .I}}{{printf "%d" .}}{{end}}`, "17", tVal, true},
|
|
{"printf var", `{{with $x := .I}}{{printf "%d" $x}}{{end}}`, "17", tVal, true},
|
|
{"printf lots", `{{printf "%d %s %g %s" 127 "hello" 7-3i .Method0}}`, "127 hello (7-3i) M0", tVal, true},
|
|
|
|
// HTML.
|
|
{"html", `{{html "<script>alert(\"XSS\");</script>"}}`,
|
|
"<script>alert("XSS");</script>", nil, true},
|
|
{"html pipeline", `{{printf "<script>alert(\"XSS\");</script>" | html}}`,
|
|
"<script>alert("XSS");</script>", nil, true},
|
|
{"html", `{{html .PS}}`, "a string", tVal, true},
|
|
{"html typed nil", `{{html .NIL}}`, "<nil>", tVal, true},
|
|
{"html untyped nil", `{{html .Empty0}}`, "<nil>", tVal, true}, // NOTE: "<no value>" in text/template
|
|
|
|
// JavaScript.
|
|
{"js", `{{js .}}`, `It\'d be nice.`, `It'd be nice.`, true},
|
|
|
|
// URL query.
|
|
{"urlquery", `{{"http://www.example.org/"|urlquery}}`, "http%3A%2F%2Fwww.example.org%2F", nil, true},
|
|
|
|
// Booleans
|
|
{"not", "{{not true}} {{not false}}", "false true", nil, true},
|
|
{"and", "{{and false 0}} {{and 1 0}} {{and 0 true}} {{and 1 1}}", "false 0 0 1", nil, true},
|
|
{"or", "{{or 0 0}} {{or 1 0}} {{or 0 true}} {{or 1 1}}", "0 1 true 1", nil, true},
|
|
{"boolean if", "{{if and true 1 `hi`}}TRUE{{else}}FALSE{{end}}", "TRUE", tVal, true},
|
|
{"boolean if not", "{{if and true 1 `hi` | not}}TRUE{{else}}FALSE{{end}}", "FALSE", nil, true},
|
|
|
|
// Indexing.
|
|
{"slice[0]", "{{index .SI 0}}", "3", tVal, true},
|
|
{"slice[1]", "{{index .SI 1}}", "4", tVal, true},
|
|
{"slice[HUGE]", "{{index .SI 10}}", "", tVal, false},
|
|
{"slice[WRONG]", "{{index .SI `hello`}}", "", tVal, false},
|
|
{"slice[nil]", "{{index .SI nil}}", "", tVal, false},
|
|
{"map[one]", "{{index .MSI `one`}}", "1", tVal, true},
|
|
{"map[two]", "{{index .MSI `two`}}", "2", tVal, true},
|
|
{"map[NO]", "{{index .MSI `XXX`}}", "0", tVal, true},
|
|
{"map[nil]", "{{index .MSI nil}}", "", tVal, false},
|
|
{"map[``]", "{{index .MSI ``}}", "0", tVal, true},
|
|
{"map[WRONG]", "{{index .MSI 10}}", "", tVal, false},
|
|
{"double index", "{{index .SMSI 1 `eleven`}}", "11", tVal, true},
|
|
{"nil[1]", "{{index nil 1}}", "", tVal, false},
|
|
{"map MI64S", "{{index .MI64S 2}}", "i642", tVal, true},
|
|
{"map MI32S", "{{index .MI32S 2}}", "two", tVal, true},
|
|
{"map MUI64S", "{{index .MUI64S 3}}", "ui643", tVal, true},
|
|
{"map MI8S", "{{index .MI8S 3}}", "i83", tVal, true},
|
|
{"map MUI8S", "{{index .MUI8S 2}}", "u82", tVal, true},
|
|
{"index of an interface field", "{{index .Empty3 0}}", "7", tVal, true},
|
|
|
|
// Slicing.
|
|
{"slice[:]", "{{slice .SI}}", "[3 4 5]", tVal, true},
|
|
{"slice[1:]", "{{slice .SI 1}}", "[4 5]", tVal, true},
|
|
{"slice[1:2]", "{{slice .SI 1 2}}", "[4]", tVal, true},
|
|
{"slice[-1:]", "{{slice .SI -1}}", "", tVal, false},
|
|
{"slice[1:-2]", "{{slice .SI 1 -2}}", "", tVal, false},
|
|
{"slice[1:2:-1]", "{{slice .SI 1 2 -1}}", "", tVal, false},
|
|
{"slice[2:1]", "{{slice .SI 2 1}}", "", tVal, false},
|
|
{"slice[2:2:1]", "{{slice .SI 2 2 1}}", "", tVal, false},
|
|
{"out of range", "{{slice .SI 4 5}}", "", tVal, false},
|
|
{"out of range", "{{slice .SI 2 2 5}}", "", tVal, false},
|
|
{"len(s) < indexes < cap(s)", "{{slice .SICap 6 10}}", "[0 0 0 0]", tVal, true},
|
|
{"len(s) < indexes < cap(s)", "{{slice .SICap 6 10 10}}", "[0 0 0 0]", tVal, true},
|
|
{"indexes > cap(s)", "{{slice .SICap 10 11}}", "", tVal, false},
|
|
{"indexes > cap(s)", "{{slice .SICap 6 10 11}}", "", tVal, false},
|
|
{"array[:]", "{{slice .AI}}", "[3 4 5]", tVal, true},
|
|
{"array[1:]", "{{slice .AI 1}}", "[4 5]", tVal, true},
|
|
{"array[1:2]", "{{slice .AI 1 2}}", "[4]", tVal, true},
|
|
{"string[:]", "{{slice .S}}", "xyz", tVal, true},
|
|
{"string[0:1]", "{{slice .S 0 1}}", "x", tVal, true},
|
|
{"string[1:]", "{{slice .S 1}}", "yz", tVal, true},
|
|
{"string[1:2]", "{{slice .S 1 2}}", "y", tVal, true},
|
|
{"out of range", "{{slice .S 1 5}}", "", tVal, false},
|
|
{"3-index slice of string", "{{slice .S 1 2 2}}", "", tVal, false},
|
|
{"slice of an interface field", "{{slice .Empty3 0 1}}", "[7]", tVal, true},
|
|
|
|
// Len.
|
|
{"slice", "{{len .SI}}", "3", tVal, true},
|
|
{"map", "{{len .MSI }}", "3", tVal, true},
|
|
{"len of int", "{{len 3}}", "", tVal, false},
|
|
{"len of nothing", "{{len .Empty0}}", "", tVal, false},
|
|
{"len of an interface field", "{{len .Empty3}}", "2", tVal, true},
|
|
|
|
// With.
|
|
{"with true", "{{with true}}{{.}}{{end}}", "true", tVal, true},
|
|
{"with false", "{{with false}}{{.}}{{else}}FALSE{{end}}", "FALSE", tVal, true},
|
|
{"with 1", "{{with 1}}{{.}}{{else}}ZERO{{end}}", "1", tVal, true},
|
|
{"with 0", "{{with 0}}{{.}}{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"with 1.5", "{{with 1.5}}{{.}}{{else}}ZERO{{end}}", "1.5", tVal, true},
|
|
{"with 0.0", "{{with .FloatZero}}{{.}}{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"with 1.5i", "{{with 1.5i}}{{.}}{{else}}ZERO{{end}}", "(0+1.5i)", tVal, true},
|
|
{"with 0.0i", "{{with .ComplexZero}}{{.}}{{else}}ZERO{{end}}", "ZERO", tVal, true},
|
|
{"with emptystring", "{{with ``}}{{.}}{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"with string", "{{with `notempty`}}{{.}}{{else}}EMPTY{{end}}", "notempty", tVal, true},
|
|
{"with emptyslice", "{{with .SIEmpty}}{{.}}{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"with slice", "{{with .SI}}{{.}}{{else}}EMPTY{{end}}", "[3 4 5]", tVal, true},
|
|
{"with emptymap", "{{with .MSIEmpty}}{{.}}{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"with map", "{{with .MSIone}}{{.}}{{else}}EMPTY{{end}}", "map[one:1]", tVal, true},
|
|
{"with empty interface, struct field", "{{with .Empty4}}{{.V}}{{end}}", "UinEmpty", tVal, true},
|
|
{"with $x int", "{{with $x := .I}}{{$x}}{{end}}", "17", tVal, true},
|
|
{"with $x struct.U.V", "{{with $x := $}}{{$x.U.V}}{{end}}", "v", tVal, true},
|
|
{"with variable and action", "{{with $x := $}}{{$y := $.U.V}}{{$y}}{{end}}", "v", tVal, true},
|
|
{"with on typed nil interface value", "{{with .NonEmptyInterfaceTypedNil}}TRUE{{ end }}", "", tVal, true},
|
|
|
|
// Range.
|
|
{"range []int", "{{range .SI}}-{{.}}-{{end}}", "-3--4--5-", tVal, true},
|
|
{"range empty no else", "{{range .SIEmpty}}-{{.}}-{{end}}", "", tVal, true},
|
|
{"range []int else", "{{range .SI}}-{{.}}-{{else}}EMPTY{{end}}", "-3--4--5-", tVal, true},
|
|
{"range empty else", "{{range .SIEmpty}}-{{.}}-{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"range []bool", "{{range .SB}}-{{.}}-{{end}}", "-true--false-", tVal, true},
|
|
{"range []int method", "{{range .SI | .MAdd .I}}-{{.}}-{{end}}", "-20--21--22-", tVal, true},
|
|
{"range map", "{{range .MSI}}-{{.}}-{{end}}", "-1--3--2-", tVal, true},
|
|
{"range empty map no else", "{{range .MSIEmpty}}-{{.}}-{{end}}", "", tVal, true},
|
|
{"range map else", "{{range .MSI}}-{{.}}-{{else}}EMPTY{{end}}", "-1--3--2-", tVal, true},
|
|
{"range empty map else", "{{range .MSIEmpty}}-{{.}}-{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
|
|
{"range empty interface", "{{range .Empty3}}-{{.}}-{{else}}EMPTY{{end}}", "-7--8-", tVal, true},
|
|
{"range empty nil", "{{range .Empty0}}-{{.}}-{{end}}", "", tVal, true},
|
|
{"range $x SI", "{{range $x := .SI}}<{{$x}}>{{end}}", "<3><4><5>", tVal, true},
|
|
{"range $x $y SI", "{{range $x, $y := .SI}}<{{$x}}={{$y}}>{{end}}", "<0=3><1=4><2=5>", tVal, true},
|
|
{"range $x MSIone", "{{range $x := .MSIone}}<{{$x}}>{{end}}", "<1>", tVal, true},
|
|
{"range $x $y MSIone", "{{range $x, $y := .MSIone}}<{{$x}}={{$y}}>{{end}}", "<one=1>", tVal, true},
|
|
{"range $x PSI", "{{range $x := .PSI}}<{{$x}}>{{end}}", "<21><22><23>", tVal, true},
|
|
{"declare in range", "{{range $x := .PSI}}<{{$foo:=$x}}{{$x}}>{{end}}", "<21><22><23>", tVal, true},
|
|
{"range count", `{{range $i, $x := count 5}}[{{$i}}]{{$x}}{{end}}`, "[0]a[1]b[2]c[3]d[4]e", tVal, true},
|
|
{"range nil count", `{{range $i, $x := count 0}}{{else}}empty{{end}}`, "empty", tVal, true},
|
|
|
|
// Cute examples.
|
|
{"or as if true", `{{or .SI "slice is empty"}}`, "[3 4 5]", tVal, true},
|
|
{"or as if false", `{{or .SIEmpty "slice is empty"}}`, "slice is empty", tVal, true},
|
|
|
|
// Error handling.
|
|
{"error method, error", "{{.MyError true}}", "", tVal, false},
|
|
{"error method, no error", "{{.MyError false}}", "false", tVal, true},
|
|
|
|
// Numbers
|
|
{"decimal", "{{print 1234}}", "1234", tVal, true},
|
|
{"decimal _", "{{print 12_34}}", "1234", tVal, true},
|
|
{"binary", "{{print 0b101}}", "5", tVal, true},
|
|
{"binary _", "{{print 0b_1_0_1}}", "5", tVal, true},
|
|
{"BINARY", "{{print 0B101}}", "5", tVal, true},
|
|
{"octal0", "{{print 0377}}", "255", tVal, true},
|
|
{"octal", "{{print 0o377}}", "255", tVal, true},
|
|
{"octal _", "{{print 0o_3_7_7}}", "255", tVal, true},
|
|
{"OCTAL", "{{print 0O377}}", "255", tVal, true},
|
|
{"hex", "{{print 0x123}}", "291", tVal, true},
|
|
{"hex _", "{{print 0x1_23}}", "291", tVal, true},
|
|
{"HEX", "{{print 0X123ABC}}", "1194684", tVal, true},
|
|
{"float", "{{print 123.4}}", "123.4", tVal, true},
|
|
{"float _", "{{print 0_0_1_2_3.4}}", "123.4", tVal, true},
|
|
{"hex float", "{{print +0x1.ep+2}}", "7.5", tVal, true},
|
|
{"hex float _", "{{print +0x_1.e_0p+0_2}}", "7.5", tVal, true},
|
|
{"HEX float", "{{print +0X1.EP+2}}", "7.5", tVal, true},
|
|
{"print multi", "{{print 1_2_3_4 7.5_00_00_00}}", "1234 7.5", tVal, true},
|
|
{"print multi2", "{{print 1234 0x0_1.e_0p+02}}", "1234 7.5", tVal, true},
|
|
|
|
// Fixed bugs.
|
|
// Must separate dot and receiver; otherwise args are evaluated with dot set to variable.
|
|
{"bug0", "{{range .MSIone}}{{if $.Method1 .}}X{{end}}{{end}}", "X", tVal, true},
|
|
// Do not loop endlessly in indirect for non-empty interfaces.
|
|
// The bug appears with *interface only; looped forever.
|
|
{"bug1", "{{.Method0}}", "M0", &iVal, true},
|
|
// Was taking address of interface field, so method set was empty.
|
|
{"bug2", "{{$.NonEmptyInterface.Method0}}", "M0", tVal, true},
|
|
// Struct values were not legal in with - mere oversight.
|
|
{"bug3", "{{with $}}{{.Method0}}{{end}}", "M0", tVal, true},
|
|
// Nil interface values in if.
|
|
{"bug4", "{{if .Empty0}}non-nil{{else}}nil{{end}}", "nil", tVal, true},
|
|
// Stringer.
|
|
{"bug5", "{{.Str}}", "foozle", tVal, true},
|
|
{"bug5a", "{{.Err}}", "erroozle", tVal, true},
|
|
// Args need to be indirected and dereferenced sometimes.
|
|
{"bug6a", "{{vfunc .V0 .V1}}", "vfunc", tVal, true},
|
|
{"bug6b", "{{vfunc .V0 .V0}}", "vfunc", tVal, true},
|
|
{"bug6c", "{{vfunc .V1 .V0}}", "vfunc", tVal, true},
|
|
{"bug6d", "{{vfunc .V1 .V1}}", "vfunc", tVal, true},
|
|
// Legal parse but illegal execution: non-function should have no arguments.
|
|
{"bug7a", "{{3 2}}", "", tVal, false},
|
|
{"bug7b", "{{$x := 1}}{{$x 2}}", "", tVal, false},
|
|
{"bug7c", "{{$x := 1}}{{3 | $x}}", "", tVal, false},
|
|
// Pipelined arg was not being type-checked.
|
|
{"bug8a", "{{3|oneArg}}", "", tVal, false},
|
|
{"bug8b", "{{4|dddArg 3}}", "", tVal, false},
|
|
// A bug was introduced that broke map lookups for lower-case names.
|
|
{"bug9", "{{.cause}}", "neglect", map[string]string{"cause": "neglect"}, true},
|
|
// Field chain starting with function did not work.
|
|
{"bug10", "{{mapOfThree.three}}-{{(mapOfThree).three}}", "3-3", 0, true},
|
|
// Dereferencing nil pointer while evaluating function arguments should not panic. Issue 7333.
|
|
{"bug11", "{{valueString .PS}}", "", T{}, false},
|
|
// 0xef gave constant type float64. Issue 8622.
|
|
{"bug12xe", "{{printf `%T` 0xef}}", "int", T{}, true},
|
|
{"bug12xE", "{{printf `%T` 0xEE}}", "int", T{}, true},
|
|
{"bug12Xe", "{{printf `%T` 0Xef}}", "int", T{}, true},
|
|
{"bug12XE", "{{printf `%T` 0XEE}}", "int", T{}, true},
|
|
// Chained nodes did not work as arguments. Issue 8473.
|
|
{"bug13", "{{print (.Copy).I}}", "17", tVal, true},
|
|
// Didn't protect against nil or literal values in field chains.
|
|
{"bug14a", "{{(nil).True}}", "", tVal, false},
|
|
{"bug14b", "{{$x := nil}}{{$x.anything}}", "", tVal, false},
|
|
{"bug14c", `{{$x := (1.0)}}{{$y := ("hello")}}{{$x.anything}}{{$y.true}}`, "", tVal, false},
|
|
// Didn't call validateType on function results. Issue 10800.
|
|
{"bug15", "{{valueString returnInt}}", "", tVal, false},
|
|
// Variadic function corner cases. Issue 10946.
|
|
{"bug16a", "{{true|printf}}", "", tVal, false},
|
|
{"bug16b", "{{1|printf}}", "", tVal, false},
|
|
{"bug16c", "{{1.1|printf}}", "", tVal, false},
|
|
{"bug16d", "{{'x'|printf}}", "", tVal, false},
|
|
{"bug16e", "{{0i|printf}}", "", tVal, false},
|
|
{"bug16f", "{{true|twoArgs \"xxx\"}}", "", tVal, false},
|
|
{"bug16g", "{{\"aaa\" |twoArgs \"bbb\"}}", "twoArgs=bbbaaa", tVal, true},
|
|
{"bug16h", "{{1|oneArg}}", "", tVal, false},
|
|
{"bug16i", "{{\"aaa\"|oneArg}}", "oneArg=aaa", tVal, true},
|
|
{"bug16j", "{{1+2i|printf \"%v\"}}", "(1+2i)", tVal, true},
|
|
{"bug16k", "{{\"aaa\"|printf }}", "aaa", tVal, true},
|
|
{"bug17a", "{{.NonEmptyInterface.X}}", "x", tVal, true},
|
|
{"bug17b", "-{{.NonEmptyInterface.Method1 1234}}-", "-1234-", tVal, true},
|
|
{"bug17c", "{{len .NonEmptyInterfacePtS}}", "2", tVal, true},
|
|
{"bug17d", "{{index .NonEmptyInterfacePtS 0}}", "a", tVal, true},
|
|
{"bug17e", "{{range .NonEmptyInterfacePtS}}-{{.}}-{{end}}", "-a--b-", tVal, true},
|
|
|
|
// More variadic function corner cases. Some runes would get evaluated
|
|
// as constant floats instead of ints. Issue 34483.
|
|
{"bug18a", "{{eq . '.'}}", "true", '.', true},
|
|
{"bug18b", "{{eq . 'e'}}", "true", 'e', true},
|
|
{"bug18c", "{{eq . 'P'}}", "true", 'P', true},
|
|
}
|
|
|
|
func zeroArgs() string {
|
|
return "zeroArgs"
|
|
}
|
|
|
|
func oneArg(a string) string {
|
|
return "oneArg=" + a
|
|
}
|
|
|
|
func twoArgs(a, b string) string {
|
|
return "twoArgs=" + a + b
|
|
}
|
|
|
|
func dddArg(a int, b ...string) string {
|
|
return fmt.Sprintln(a, b)
|
|
}
|
|
|
|
// count returns a channel that will deliver n sequential 1-letter strings starting at "a"
|
|
func count(n int) chan string {
|
|
if n == 0 {
|
|
return nil
|
|
}
|
|
c := make(chan string)
|
|
go func() {
|
|
for i := 0; i < n; i++ {
|
|
c <- "abcdefghijklmnop"[i : i+1]
|
|
}
|
|
close(c)
|
|
}()
|
|
return c
|
|
}
|
|
|
|
// vfunc takes a *V and a V
|
|
func vfunc(V, *V) string {
|
|
return "vfunc"
|
|
}
|
|
|
|
// valueString takes a string, not a pointer.
|
|
func valueString(v string) string {
|
|
return "value is ignored"
|
|
}
|
|
|
|
// returnInt returns an int
|
|
func returnInt() int {
|
|
return 7
|
|
}
|
|
|
|
func add(args ...int) int {
|
|
sum := 0
|
|
for _, x := range args {
|
|
sum += x
|
|
}
|
|
return sum
|
|
}
|
|
|
|
func echo(arg interface{}) interface{} {
|
|
return arg
|
|
}
|
|
|
|
func makemap(arg ...string) map[string]string {
|
|
if len(arg)%2 != 0 {
|
|
panic("bad makemap")
|
|
}
|
|
m := make(map[string]string)
|
|
for i := 0; i < len(arg); i += 2 {
|
|
m[arg[i]] = arg[i+1]
|
|
}
|
|
return m
|
|
}
|
|
|
|
func stringer(s fmt.Stringer) string {
|
|
return s.String()
|
|
}
|
|
|
|
func mapOfThree() interface{} {
|
|
return map[string]int{"three": 3}
|
|
}
|
|
|
|
func testExecute(execTests []execTest, template *Template, t *testing.T) {
|
|
b := new(bytes.Buffer)
|
|
funcs := FuncMap{
|
|
"add": add,
|
|
"count": count,
|
|
"dddArg": dddArg,
|
|
"echo": echo,
|
|
"makemap": makemap,
|
|
"mapOfThree": mapOfThree,
|
|
"oneArg": oneArg,
|
|
"returnInt": returnInt,
|
|
"stringer": stringer,
|
|
"twoArgs": twoArgs,
|
|
"typeOf": typeOf,
|
|
"valueString": valueString,
|
|
"vfunc": vfunc,
|
|
"zeroArgs": zeroArgs,
|
|
}
|
|
for _, test := range execTests {
|
|
var tmpl *Template
|
|
var err error
|
|
if template == nil {
|
|
tmpl, err = New(test.name).Funcs(funcs).Parse(test.input)
|
|
} else {
|
|
tmpl, err = template.Clone()
|
|
if err != nil {
|
|
t.Errorf("%s: clone error: %s", test.name, err)
|
|
continue
|
|
}
|
|
tmpl, err = tmpl.New(test.name).Funcs(funcs).Parse(test.input)
|
|
}
|
|
if err != nil {
|
|
t.Errorf("%s: parse error: %s", test.name, err)
|
|
continue
|
|
}
|
|
b.Reset()
|
|
err = tmpl.Execute(b, test.data)
|
|
switch {
|
|
case !test.ok && err == nil:
|
|
t.Errorf("%s: expected error; got none", test.name)
|
|
continue
|
|
case test.ok && err != nil:
|
|
t.Errorf("%s: unexpected execute error: %s", test.name, err)
|
|
continue
|
|
case !test.ok && err != nil:
|
|
// expected error, got one
|
|
if *debug {
|
|
fmt.Printf("%s: %s\n\t%s\n", test.name, test.input, err)
|
|
}
|
|
}
|
|
result := b.String()
|
|
if result != test.output {
|
|
t.Errorf("%s: expected\n\t%q\ngot\n\t%q", test.name, test.output, result)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestExecute(t *testing.T) {
|
|
testExecute(execTests, nil, t)
|
|
}
|
|
|
|
var delimPairs = []string{
|
|
"", "", // default
|
|
"{{", "}}", // same as default
|
|
"|", "|", // same
|
|
"(日)", "(本)", // peculiar
|
|
}
|
|
|
|
func TestDelims(t *testing.T) {
|
|
const hello = "Hello, world"
|
|
var value = struct{ Str string }{hello}
|
|
for i := 0; i < len(delimPairs); i += 2 {
|
|
text := ".Str"
|
|
left := delimPairs[i+0]
|
|
trueLeft := left
|
|
right := delimPairs[i+1]
|
|
trueRight := right
|
|
if left == "" { // default case
|
|
trueLeft = "{{"
|
|
}
|
|
if right == "" { // default case
|
|
trueRight = "}}"
|
|
}
|
|
text = trueLeft + text + trueRight
|
|
// Now add a comment
|
|
text += trueLeft + "/*comment*/" + trueRight
|
|
// Now add an action containing a string.
|
|
text += trueLeft + `"` + trueLeft + `"` + trueRight
|
|
// At this point text looks like `{{.Str}}{{/*comment*/}}{{"{{"}}`.
|
|
tmpl, err := New("delims").Delims(left, right).Parse(text)
|
|
if err != nil {
|
|
t.Fatalf("delim %q text %q parse err %s", left, text, err)
|
|
}
|
|
var b = new(bytes.Buffer)
|
|
err = tmpl.Execute(b, value)
|
|
if err != nil {
|
|
t.Fatalf("delim %q exec err %s", left, err)
|
|
}
|
|
if b.String() != hello+trueLeft {
|
|
t.Errorf("expected %q got %q", hello+trueLeft, b.String())
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check that an error from a method flows back to the top.
|
|
func TestExecuteError(t *testing.T) {
|
|
b := new(bytes.Buffer)
|
|
tmpl := New("error")
|
|
_, err := tmpl.Parse("{{.MyError true}}")
|
|
if err != nil {
|
|
t.Fatalf("parse error: %s", err)
|
|
}
|
|
err = tmpl.Execute(b, tVal)
|
|
if err == nil {
|
|
t.Errorf("expected error; got none")
|
|
} else if !strings.Contains(err.Error(), myError.Error()) {
|
|
if *debug {
|
|
fmt.Printf("test execute error: %s\n", err)
|
|
}
|
|
t.Errorf("expected myError; got %s", err)
|
|
}
|
|
}
|
|
|
|
const execErrorText = `line 1
|
|
line 2
|
|
line 3
|
|
{{template "one" .}}
|
|
{{define "one"}}{{template "two" .}}{{end}}
|
|
{{define "two"}}{{template "three" .}}{{end}}
|
|
{{define "three"}}{{index "hi" $}}{{end}}`
|
|
|
|
// Check that an error from a nested template contains all the relevant information.
|
|
func TestExecError(t *testing.T) {
|
|
tmpl, err := New("top").Parse(execErrorText)
|
|
if err != nil {
|
|
t.Fatal("parse error:", err)
|
|
}
|
|
var b bytes.Buffer
|
|
err = tmpl.Execute(&b, 5) // 5 is out of range indexing "hi"
|
|
if err == nil {
|
|
t.Fatal("expected error")
|
|
}
|
|
const want = `template: top:7:20: executing "three" at <index "hi" $>: error calling index: index out of range: 5`
|
|
got := err.Error()
|
|
if got != want {
|
|
t.Errorf("expected\n%q\ngot\n%q", want, got)
|
|
}
|
|
}
|
|
|
|
func TestJSEscaping(t *testing.T) {
|
|
testCases := []struct {
|
|
in, exp string
|
|
}{
|
|
{`a`, `a`},
|
|
{`'foo`, `\'foo`},
|
|
{`Go "jump" \`, `Go \"jump\" \\`},
|
|
{`Yukihiro says "今日は世界"`, `Yukihiro says \"今日は世界\"`},
|
|
{"unprintable \uFDFF", `unprintable \uFDFF`},
|
|
{`<html>`, `\u003Chtml\u003E`},
|
|
{`no = in attributes`, `no \u003D in attributes`},
|
|
{`' does not become HTML entity`, `\u0026#x27; does not become HTML entity`},
|
|
}
|
|
for _, tc := range testCases {
|
|
s := JSEscapeString(tc.in)
|
|
if s != tc.exp {
|
|
t.Errorf("JS escaping [%s] got [%s] want [%s]", tc.in, s, tc.exp)
|
|
}
|
|
}
|
|
}
|
|
|
|
// A nice example: walk a binary tree.
|
|
|
|
type Tree struct {
|
|
Val int
|
|
Left, Right *Tree
|
|
}
|
|
|
|
// Use different delimiters to test Set.Delims.
|
|
// Also test the trimming of leading and trailing spaces.
|
|
const treeTemplate = `
|
|
(- define "tree" -)
|
|
[
|
|
(- .Val -)
|
|
(- with .Left -)
|
|
(template "tree" . -)
|
|
(- end -)
|
|
(- with .Right -)
|
|
(- template "tree" . -)
|
|
(- end -)
|
|
]
|
|
(- end -)
|
|
`
|
|
|
|
func TestTree(t *testing.T) {
|
|
var tree = &Tree{
|
|
1,
|
|
&Tree{
|
|
2, &Tree{
|
|
3,
|
|
&Tree{
|
|
4, nil, nil,
|
|
},
|
|
nil,
|
|
},
|
|
&Tree{
|
|
5,
|
|
&Tree{
|
|
6, nil, nil,
|
|
},
|
|
nil,
|
|
},
|
|
},
|
|
&Tree{
|
|
7,
|
|
&Tree{
|
|
8,
|
|
&Tree{
|
|
9, nil, nil,
|
|
},
|
|
nil,
|
|
},
|
|
&Tree{
|
|
10,
|
|
&Tree{
|
|
11, nil, nil,
|
|
},
|
|
nil,
|
|
},
|
|
},
|
|
}
|
|
tmpl, err := New("root").Delims("(", ")").Parse(treeTemplate)
|
|
if err != nil {
|
|
t.Fatal("parse error:", err)
|
|
}
|
|
var b bytes.Buffer
|
|
const expect = "[1[2[3[4]][5[6]]][7[8[9]][10[11]]]]"
|
|
// First by looking up the template.
|
|
err = tmpl.Lookup("tree").Execute(&b, tree)
|
|
if err != nil {
|
|
t.Fatal("exec error:", err)
|
|
}
|
|
result := b.String()
|
|
if result != expect {
|
|
t.Errorf("expected %q got %q", expect, result)
|
|
}
|
|
// Then direct to execution.
|
|
b.Reset()
|
|
err = tmpl.ExecuteTemplate(&b, "tree", tree)
|
|
if err != nil {
|
|
t.Fatal("exec error:", err)
|
|
}
|
|
result = b.String()
|
|
if result != expect {
|
|
t.Errorf("expected %q got %q", expect, result)
|
|
}
|
|
}
|
|
|
|
func TestExecuteOnNewTemplate(t *testing.T) {
|
|
// This is issue 3872.
|
|
New("Name").Templates()
|
|
// This is issue 11379.
|
|
// new(Template).Templates() // TODO: crashes
|
|
// new(Template).Parse("") // TODO: crashes
|
|
// new(Template).New("abc").Parse("") // TODO: crashes
|
|
// new(Template).Execute(nil, nil) // TODO: crashes; returns an error (but does not crash)
|
|
// new(Template).ExecuteTemplate(nil, "XXX", nil) // TODO: crashes; returns an error (but does not crash)
|
|
}
|
|
|
|
const testTemplates = `{{define "one"}}one{{end}}{{define "two"}}two{{end}}`
|
|
|
|
func TestMessageForExecuteEmpty(t *testing.T) {
|
|
// Test a truly empty template.
|
|
tmpl := New("empty")
|
|
var b bytes.Buffer
|
|
err := tmpl.Execute(&b, 0)
|
|
if err == nil {
|
|
t.Fatal("expected initial error")
|
|
}
|
|
got := err.Error()
|
|
want := `template: "empty" is an incomplete or empty template` // NOTE: text/template has extra "empty: " in message
|
|
if got != want {
|
|
t.Errorf("expected error %s got %s", want, got)
|
|
}
|
|
|
|
// Add a non-empty template to check that the error is helpful.
|
|
tmpl = New("empty")
|
|
tests, err := New("").Parse(testTemplates)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
tmpl.AddParseTree("secondary", tests.Tree)
|
|
err = tmpl.Execute(&b, 0)
|
|
if err == nil {
|
|
t.Fatal("expected second error")
|
|
}
|
|
got = err.Error()
|
|
if got != want {
|
|
t.Errorf("expected error %s got %s", want, got)
|
|
}
|
|
// Make sure we can execute the secondary.
|
|
err = tmpl.ExecuteTemplate(&b, "secondary", 0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestFinalForPrintf(t *testing.T) {
|
|
tmpl, err := New("").Parse(`{{"x" | printf}}`)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var b bytes.Buffer
|
|
err = tmpl.Execute(&b, 0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
type cmpTest struct {
|
|
expr string
|
|
truth string
|
|
ok bool
|
|
}
|
|
|
|
var cmpTests = []cmpTest{
|
|
{"eq true true", "true", true},
|
|
{"eq true false", "false", true},
|
|
{"eq 1+2i 1+2i", "true", true},
|
|
{"eq 1+2i 1+3i", "false", true},
|
|
{"eq 1.5 1.5", "true", true},
|
|
{"eq 1.5 2.5", "false", true},
|
|
{"eq 1 1", "true", true},
|
|
{"eq 1 2", "false", true},
|
|
{"eq `xy` `xy`", "true", true},
|
|
{"eq `xy` `xyz`", "false", true},
|
|
{"eq .Uthree .Uthree", "true", true},
|
|
{"eq .Uthree .Ufour", "false", true},
|
|
{"eq 3 4 5 6 3", "true", true},
|
|
{"eq 3 4 5 6 7", "false", true},
|
|
{"ne true true", "false", true},
|
|
{"ne true false", "true", true},
|
|
{"ne 1+2i 1+2i", "false", true},
|
|
{"ne 1+2i 1+3i", "true", true},
|
|
{"ne 1.5 1.5", "false", true},
|
|
{"ne 1.5 2.5", "true", true},
|
|
{"ne 1 1", "false", true},
|
|
{"ne 1 2", "true", true},
|
|
{"ne `xy` `xy`", "false", true},
|
|
{"ne `xy` `xyz`", "true", true},
|
|
{"ne .Uthree .Uthree", "false", true},
|
|
{"ne .Uthree .Ufour", "true", true},
|
|
{"lt 1.5 1.5", "false", true},
|
|
{"lt 1.5 2.5", "true", true},
|
|
{"lt 1 1", "false", true},
|
|
{"lt 1 2", "true", true},
|
|
{"lt `xy` `xy`", "false", true},
|
|
{"lt `xy` `xyz`", "true", true},
|
|
{"lt .Uthree .Uthree", "false", true},
|
|
{"lt .Uthree .Ufour", "true", true},
|
|
{"le 1.5 1.5", "true", true},
|
|
{"le 1.5 2.5", "true", true},
|
|
{"le 2.5 1.5", "false", true},
|
|
{"le 1 1", "true", true},
|
|
{"le 1 2", "true", true},
|
|
{"le 2 1", "false", true},
|
|
{"le `xy` `xy`", "true", true},
|
|
{"le `xy` `xyz`", "true", true},
|
|
{"le `xyz` `xy`", "false", true},
|
|
{"le .Uthree .Uthree", "true", true},
|
|
{"le .Uthree .Ufour", "true", true},
|
|
{"le .Ufour .Uthree", "false", true},
|
|
{"gt 1.5 1.5", "false", true},
|
|
{"gt 1.5 2.5", "false", true},
|
|
{"gt 1 1", "false", true},
|
|
{"gt 2 1", "true", true},
|
|
{"gt 1 2", "false", true},
|
|
{"gt `xy` `xy`", "false", true},
|
|
{"gt `xy` `xyz`", "false", true},
|
|
{"gt .Uthree .Uthree", "false", true},
|
|
{"gt .Uthree .Ufour", "false", true},
|
|
{"gt .Ufour .Uthree", "true", true},
|
|
{"ge 1.5 1.5", "true", true},
|
|
{"ge 1.5 2.5", "false", true},
|
|
{"ge 2.5 1.5", "true", true},
|
|
{"ge 1 1", "true", true},
|
|
{"ge 1 2", "false", true},
|
|
{"ge 2 1", "true", true},
|
|
{"ge `xy` `xy`", "true", true},
|
|
{"ge `xy` `xyz`", "false", true},
|
|
{"ge `xyz` `xy`", "true", true},
|
|
{"ge .Uthree .Uthree", "true", true},
|
|
{"ge .Uthree .Ufour", "false", true},
|
|
{"ge .Ufour .Uthree", "true", true},
|
|
// Mixing signed and unsigned integers.
|
|
{"eq .Uthree .Three", "true", true},
|
|
{"eq .Three .Uthree", "true", true},
|
|
{"le .Uthree .Three", "true", true},
|
|
{"le .Three .Uthree", "true", true},
|
|
{"ge .Uthree .Three", "true", true},
|
|
{"ge .Three .Uthree", "true", true},
|
|
{"lt .Uthree .Three", "false", true},
|
|
{"lt .Three .Uthree", "false", true},
|
|
{"gt .Uthree .Three", "false", true},
|
|
{"gt .Three .Uthree", "false", true},
|
|
{"eq .Ufour .Three", "false", true},
|
|
{"lt .Ufour .Three", "false", true},
|
|
{"gt .Ufour .Three", "true", true},
|
|
{"eq .NegOne .Uthree", "false", true},
|
|
{"eq .Uthree .NegOne", "false", true},
|
|
{"ne .NegOne .Uthree", "true", true},
|
|
{"ne .Uthree .NegOne", "true", true},
|
|
{"lt .NegOne .Uthree", "true", true},
|
|
{"lt .Uthree .NegOne", "false", true},
|
|
{"le .NegOne .Uthree", "true", true},
|
|
{"le .Uthree .NegOne", "false", true},
|
|
{"gt .NegOne .Uthree", "false", true},
|
|
{"gt .Uthree .NegOne", "true", true},
|
|
{"ge .NegOne .Uthree", "false", true},
|
|
{"ge .Uthree .NegOne", "true", true},
|
|
{"eq (index `x` 0) 'x'", "true", true}, // The example that triggered this rule.
|
|
{"eq (index `x` 0) 'y'", "false", true},
|
|
{"eq .V1 .V2", "true", true},
|
|
{"eq .Ptr .Ptr", "true", true},
|
|
{"eq .Ptr .NilPtr", "false", true},
|
|
{"eq .NilPtr .NilPtr", "true", true},
|
|
{"eq .Iface1 .Iface1", "true", true},
|
|
{"eq .Iface1 .Iface2", "false", true},
|
|
{"eq .Iface2 .Iface2", "true", true},
|
|
// Errors
|
|
{"eq `xy` 1", "", false}, // Different types.
|
|
{"eq 2 2.0", "", false}, // Different types.
|
|
{"lt true true", "", false}, // Unordered types.
|
|
{"lt 1+0i 1+0i", "", false}, // Unordered types.
|
|
{"eq .Ptr 1", "", false}, // Incompatible types.
|
|
{"eq .Ptr .NegOne", "", false}, // Incompatible types.
|
|
{"eq .Map .Map", "", false}, // Uncomparable types.
|
|
{"eq .Map .V1", "", false}, // Uncomparable types.
|
|
}
|
|
|
|
func TestComparison(t *testing.T) {
|
|
b := new(bytes.Buffer)
|
|
var cmpStruct = struct {
|
|
Uthree, Ufour uint
|
|
NegOne, Three int
|
|
Ptr, NilPtr *int
|
|
Map map[int]int
|
|
V1, V2 V
|
|
Iface1, Iface2 fmt.Stringer
|
|
}{
|
|
Uthree: 3,
|
|
Ufour: 4,
|
|
NegOne: -1,
|
|
Three: 3,
|
|
Ptr: new(int),
|
|
Iface1: b,
|
|
}
|
|
for _, test := range cmpTests {
|
|
text := fmt.Sprintf("{{if %s}}true{{else}}false{{end}}", test.expr)
|
|
tmpl, err := New("empty").Parse(text)
|
|
if err != nil {
|
|
t.Fatalf("%q: %s", test.expr, err)
|
|
}
|
|
b.Reset()
|
|
err = tmpl.Execute(b, &cmpStruct)
|
|
if test.ok && err != nil {
|
|
t.Errorf("%s errored incorrectly: %s", test.expr, err)
|
|
continue
|
|
}
|
|
if !test.ok && err == nil {
|
|
t.Errorf("%s did not error", test.expr)
|
|
continue
|
|
}
|
|
if b.String() != test.truth {
|
|
t.Errorf("%s: want %s; got %s", test.expr, test.truth, b.String())
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestMissingMapKey(t *testing.T) {
|
|
data := map[string]int{
|
|
"x": 99,
|
|
}
|
|
tmpl, err := New("t1").Parse("{{.x}} {{.y}}")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var b bytes.Buffer
|
|
// By default, just get "<no value>" // NOTE: not in html/template, get empty string
|
|
err = tmpl.Execute(&b, data)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
want := "99 "
|
|
got := b.String()
|
|
if got != want {
|
|
t.Errorf("got %q; expected %q", got, want)
|
|
}
|
|
// Same if we set the option explicitly to the default.
|
|
tmpl.Option("missingkey=default")
|
|
b.Reset()
|
|
err = tmpl.Execute(&b, data)
|
|
if err != nil {
|
|
t.Fatal("default:", err)
|
|
}
|
|
got = b.String()
|
|
if got != want {
|
|
t.Errorf("got %q; expected %q", got, want)
|
|
}
|
|
// Next we ask for a zero value
|
|
tmpl.Option("missingkey=zero")
|
|
b.Reset()
|
|
err = tmpl.Execute(&b, data)
|
|
if err != nil {
|
|
t.Fatal("zero:", err)
|
|
}
|
|
want = "99 0"
|
|
got = b.String()
|
|
if got != want {
|
|
t.Errorf("got %q; expected %q", got, want)
|
|
}
|
|
// Now we ask for an error.
|
|
tmpl.Option("missingkey=error")
|
|
err = tmpl.Execute(&b, data)
|
|
if err == nil {
|
|
t.Errorf("expected error; got none")
|
|
}
|
|
// same Option, but now a nil interface: ask for an error
|
|
err = tmpl.Execute(&b, nil)
|
|
t.Log(err)
|
|
if err == nil {
|
|
t.Errorf("expected error for nil-interface; got none")
|
|
}
|
|
}
|
|
|
|
// Test that the error message for multiline unterminated string
|
|
// refers to the line number of the opening quote.
|
|
func TestUnterminatedStringError(t *testing.T) {
|
|
_, err := New("X").Parse("hello\n\n{{`unterminated\n\n\n\n}}\n some more\n\n")
|
|
if err == nil {
|
|
t.Fatal("expected error")
|
|
}
|
|
str := err.Error()
|
|
if !strings.Contains(str, "X:3: unterminated raw quoted string") {
|
|
t.Fatalf("unexpected error: %s", str)
|
|
}
|
|
}
|
|
|
|
const alwaysErrorText = "always be failing"
|
|
|
|
var alwaysError = errors.New(alwaysErrorText)
|
|
|
|
type ErrorWriter int
|
|
|
|
func (e ErrorWriter) Write(p []byte) (int, error) {
|
|
return 0, alwaysError
|
|
}
|
|
|
|
func TestExecuteGivesExecError(t *testing.T) {
|
|
// First, a non-execution error shouldn't be an ExecError.
|
|
tmpl, err := New("X").Parse("hello")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
err = tmpl.Execute(ErrorWriter(0), 0)
|
|
if err == nil {
|
|
t.Fatal("expected error; got none")
|
|
}
|
|
if err.Error() != alwaysErrorText {
|
|
t.Errorf("expected %q error; got %q", alwaysErrorText, err)
|
|
}
|
|
// This one should be an ExecError.
|
|
tmpl, err = New("X").Parse("hello, {{.X.Y}}")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
err = tmpl.Execute(io.Discard, 0)
|
|
if err == nil {
|
|
t.Fatal("expected error; got none")
|
|
}
|
|
eerr, ok := err.(template.ExecError)
|
|
if !ok {
|
|
t.Fatalf("did not expect ExecError %s", eerr)
|
|
}
|
|
expect := "field X in type int"
|
|
if !strings.Contains(err.Error(), expect) {
|
|
t.Errorf("expected %q; got %q", expect, err)
|
|
}
|
|
}
|
|
|
|
func funcNameTestFunc() int {
|
|
return 0
|
|
}
|
|
|
|
func TestGoodFuncNames(t *testing.T) {
|
|
names := []string{
|
|
"_",
|
|
"a",
|
|
"a1",
|
|
"a1",
|
|
"Ӵ",
|
|
}
|
|
for _, name := range names {
|
|
tmpl := New("X").Funcs(
|
|
FuncMap{
|
|
name: funcNameTestFunc,
|
|
},
|
|
)
|
|
if tmpl == nil {
|
|
t.Fatalf("nil result for %q", name)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBadFuncNames(t *testing.T) {
|
|
names := []string{
|
|
"",
|
|
"2",
|
|
"a-b",
|
|
}
|
|
for _, name := range names {
|
|
testBadFuncName(name, t)
|
|
}
|
|
}
|
|
|
|
func testBadFuncName(name string, t *testing.T) {
|
|
t.Helper()
|
|
defer func() {
|
|
recover()
|
|
}()
|
|
New("X").Funcs(
|
|
FuncMap{
|
|
name: funcNameTestFunc,
|
|
},
|
|
)
|
|
// If we get here, the name did not cause a panic, which is how Funcs
|
|
// reports an error.
|
|
t.Errorf("%q succeeded incorrectly as function name", name)
|
|
}
|
|
|
|
func TestBlock(t *testing.T) {
|
|
const (
|
|
input = `a({{block "inner" .}}bar({{.}})baz{{end}})b`
|
|
want = `a(bar(hello)baz)b`
|
|
overlay = `{{define "inner"}}foo({{.}})bar{{end}}`
|
|
want2 = `a(foo(goodbye)bar)b`
|
|
)
|
|
tmpl, err := New("outer").Parse(input)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
tmpl2, err := Must(tmpl.Clone()).Parse(overlay)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
if err := tmpl.Execute(&buf, "hello"); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if got := buf.String(); got != want {
|
|
t.Errorf("got %q, want %q", got, want)
|
|
}
|
|
|
|
buf.Reset()
|
|
if err := tmpl2.Execute(&buf, "goodbye"); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if got := buf.String(); got != want2 {
|
|
t.Errorf("got %q, want %q", got, want2)
|
|
}
|
|
}
|
|
|
|
func TestEvalFieldErrors(t *testing.T) {
|
|
tests := []struct {
|
|
name, src string
|
|
value interface{}
|
|
want string
|
|
}{
|
|
{
|
|
// Check that calling an invalid field on nil pointer
|
|
// prints a field error instead of a distracting nil
|
|
// pointer error. https://golang.org/issue/15125
|
|
"MissingFieldOnNil",
|
|
"{{.MissingField}}",
|
|
(*T)(nil),
|
|
"can't evaluate field MissingField in type *template.T",
|
|
},
|
|
{
|
|
"MissingFieldOnNonNil",
|
|
"{{.MissingField}}",
|
|
&T{},
|
|
"can't evaluate field MissingField in type *template.T",
|
|
},
|
|
{
|
|
"ExistingFieldOnNil",
|
|
"{{.X}}",
|
|
(*T)(nil),
|
|
"nil pointer evaluating *template.T.X",
|
|
},
|
|
{
|
|
"MissingKeyOnNilMap",
|
|
"{{.MissingKey}}",
|
|
(*map[string]string)(nil),
|
|
"nil pointer evaluating *map[string]string.MissingKey",
|
|
},
|
|
{
|
|
"MissingKeyOnNilMapPtr",
|
|
"{{.MissingKey}}",
|
|
(*map[string]string)(nil),
|
|
"nil pointer evaluating *map[string]string.MissingKey",
|
|
},
|
|
{
|
|
"MissingKeyOnMapPtrToNil",
|
|
"{{.MissingKey}}",
|
|
&map[string]string{},
|
|
"<nil>",
|
|
},
|
|
}
|
|
for _, tc := range tests {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
tmpl := Must(New("tmpl").Parse(tc.src))
|
|
err := tmpl.Execute(io.Discard, tc.value)
|
|
got := "<nil>"
|
|
if err != nil {
|
|
got = err.Error()
|
|
}
|
|
if !strings.HasSuffix(got, tc.want) {
|
|
t.Fatalf("got error %q, want %q", got, tc.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestMaxExecDepth(t *testing.T) {
|
|
if testing.Short() {
|
|
t.Skip("skipping in -short mode")
|
|
}
|
|
tmpl := Must(New("tmpl").Parse(`{{template "tmpl" .}}`))
|
|
err := tmpl.Execute(io.Discard, nil)
|
|
got := "<nil>"
|
|
if err != nil {
|
|
got = err.Error()
|
|
}
|
|
const want = "exceeded maximum template depth"
|
|
if !strings.Contains(got, want) {
|
|
t.Errorf("got error %q; want %q", got, want)
|
|
}
|
|
}
|
|
|
|
func TestAddrOfIndex(t *testing.T) {
|
|
// golang.org/issue/14916.
|
|
// Before index worked on reflect.Values, the .String could not be
|
|
// found on the (incorrectly unaddressable) V value,
|
|
// in contrast to range, which worked fine.
|
|
// Also testing that passing a reflect.Value to tmpl.Execute works.
|
|
texts := []string{
|
|
`{{range .}}{{.String}}{{end}}`,
|
|
`{{with index . 0}}{{.String}}{{end}}`,
|
|
}
|
|
for _, text := range texts {
|
|
tmpl := Must(New("tmpl").Parse(text))
|
|
var buf bytes.Buffer
|
|
err := tmpl.Execute(&buf, reflect.ValueOf([]V{{1}}))
|
|
if err != nil {
|
|
t.Fatalf("%s: Execute: %v", text, err)
|
|
}
|
|
if buf.String() != "<1>" {
|
|
t.Fatalf("%s: template output = %q, want %q", text, &buf, "<1>")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestInterfaceValues(t *testing.T) {
|
|
// golang.org/issue/17714.
|
|
// Before index worked on reflect.Values, interface values
|
|
// were always implicitly promoted to the underlying value,
|
|
// except that nil interfaces were promoted to the zero reflect.Value.
|
|
// Eliminating a round trip to interface{} and back to reflect.Value
|
|
// eliminated this promotion, breaking these cases.
|
|
tests := []struct {
|
|
text string
|
|
out string
|
|
}{
|
|
{`{{index .Nil 1}}`, "ERROR: index of untyped nil"},
|
|
{`{{index .Slice 2}}`, "2"},
|
|
{`{{index .Slice .Two}}`, "2"},
|
|
{`{{call .Nil 1}}`, "ERROR: call of nil"},
|
|
{`{{call .PlusOne 1}}`, "2"},
|
|
{`{{call .PlusOne .One}}`, "2"},
|
|
{`{{and (index .Slice 0) true}}`, "0"},
|
|
{`{{and .Zero true}}`, "0"},
|
|
{`{{and (index .Slice 1) false}}`, "false"},
|
|
{`{{and .One false}}`, "false"},
|
|
{`{{or (index .Slice 0) false}}`, "false"},
|
|
{`{{or .Zero false}}`, "false"},
|
|
{`{{or (index .Slice 1) true}}`, "1"},
|
|
{`{{or .One true}}`, "1"},
|
|
{`{{not (index .Slice 0)}}`, "true"},
|
|
{`{{not .Zero}}`, "true"},
|
|
{`{{not (index .Slice 1)}}`, "false"},
|
|
{`{{not .One}}`, "false"},
|
|
{`{{eq (index .Slice 0) .Zero}}`, "true"},
|
|
{`{{eq (index .Slice 1) .One}}`, "true"},
|
|
{`{{ne (index .Slice 0) .Zero}}`, "false"},
|
|
{`{{ne (index .Slice 1) .One}}`, "false"},
|
|
{`{{ge (index .Slice 0) .One}}`, "false"},
|
|
{`{{ge (index .Slice 1) .Zero}}`, "true"},
|
|
{`{{gt (index .Slice 0) .One}}`, "false"},
|
|
{`{{gt (index .Slice 1) .Zero}}`, "true"},
|
|
{`{{le (index .Slice 0) .One}}`, "true"},
|
|
{`{{le (index .Slice 1) .Zero}}`, "false"},
|
|
{`{{lt (index .Slice 0) .One}}`, "true"},
|
|
{`{{lt (index .Slice 1) .Zero}}`, "false"},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tmpl := Must(New("tmpl").Parse(tt.text))
|
|
var buf bytes.Buffer
|
|
err := tmpl.Execute(&buf, map[string]interface{}{
|
|
"PlusOne": func(n int) int {
|
|
return n + 1
|
|
},
|
|
"Slice": []int{0, 1, 2, 3},
|
|
"One": 1,
|
|
"Two": 2,
|
|
"Nil": nil,
|
|
"Zero": 0,
|
|
})
|
|
if strings.HasPrefix(tt.out, "ERROR:") {
|
|
e := strings.TrimSpace(strings.TrimPrefix(tt.out, "ERROR:"))
|
|
if err == nil || !strings.Contains(err.Error(), e) {
|
|
t.Errorf("%s: Execute: %v, want error %q", tt.text, err, e)
|
|
}
|
|
continue
|
|
}
|
|
if err != nil {
|
|
t.Errorf("%s: Execute: %v", tt.text, err)
|
|
continue
|
|
}
|
|
if buf.String() != tt.out {
|
|
t.Errorf("%s: template output = %q, want %q", tt.text, &buf, tt.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check that panics during calls are recovered and returned as errors.
|
|
func TestExecutePanicDuringCall(t *testing.T) {
|
|
funcs := map[string]interface{}{
|
|
"doPanic": func() string {
|
|
panic("custom panic string")
|
|
},
|
|
}
|
|
tests := []struct {
|
|
name string
|
|
input string
|
|
data interface{}
|
|
wantErr string
|
|
}{
|
|
{
|
|
"direct func call panics",
|
|
"{{doPanic}}", (*T)(nil),
|
|
`template: t:1:2: executing "t" at <doPanic>: error calling doPanic: custom panic string`,
|
|
},
|
|
{
|
|
"indirect func call panics",
|
|
"{{call doPanic}}", (*T)(nil),
|
|
`template: t:1:7: executing "t" at <doPanic>: error calling doPanic: custom panic string`,
|
|
},
|
|
{
|
|
"direct method call panics",
|
|
"{{.GetU}}", (*T)(nil),
|
|
`template: t:1:2: executing "t" at <.GetU>: error calling GetU: runtime error: invalid memory address or nil pointer dereference`,
|
|
},
|
|
{
|
|
"indirect method call panics",
|
|
"{{call .GetU}}", (*T)(nil),
|
|
`template: t:1:7: executing "t" at <.GetU>: error calling GetU: runtime error: invalid memory address or nil pointer dereference`,
|
|
},
|
|
{
|
|
"func field call panics",
|
|
"{{call .PanicFunc}}", tVal,
|
|
`template: t:1:2: executing "t" at <call .PanicFunc>: error calling call: test panic`,
|
|
},
|
|
{
|
|
"method call on nil interface",
|
|
"{{.NonEmptyInterfaceNil.Method0}}", tVal,
|
|
`template: t:1:23: executing "t" at <.NonEmptyInterfaceNil.Method0>: nil pointer evaluating template.I.Method0`,
|
|
},
|
|
}
|
|
for _, tc := range tests {
|
|
b := new(bytes.Buffer)
|
|
tmpl, err := New("t").Funcs(funcs).Parse(tc.input)
|
|
if err != nil {
|
|
t.Fatalf("parse error: %s", err)
|
|
}
|
|
err = tmpl.Execute(b, tc.data)
|
|
if err == nil {
|
|
t.Errorf("%s: expected error; got none", tc.name)
|
|
} else if !strings.Contains(err.Error(), tc.wantErr) {
|
|
if *debug {
|
|
fmt.Printf("%s: test execute error: %s\n", tc.name, err)
|
|
}
|
|
t.Errorf("%s: expected error:\n%s\ngot:\n%s", tc.name, tc.wantErr, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue 31810. Check that a parenthesized first argument behaves properly.
|
|
func TestIssue31810(t *testing.T) {
|
|
t.Skip("broken in html/template")
|
|
|
|
// A simple value with no arguments is fine.
|
|
var b bytes.Buffer
|
|
const text = "{{ (.) }}"
|
|
tmpl, err := New("").Parse(text)
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
err = tmpl.Execute(&b, "result")
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
if b.String() != "result" {
|
|
t.Errorf("%s got %q, expected %q", text, b.String(), "result")
|
|
}
|
|
|
|
// Even a plain function fails - need to use call.
|
|
f := func() string { return "result" }
|
|
b.Reset()
|
|
err = tmpl.Execute(&b, f)
|
|
if err == nil {
|
|
t.Error("expected error with no call, got none")
|
|
}
|
|
|
|
// Works if the function is explicitly called.
|
|
const textCall = "{{ (call .) }}"
|
|
tmpl, err = New("").Parse(textCall)
|
|
b.Reset()
|
|
err = tmpl.Execute(&b, f)
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
if b.String() != "result" {
|
|
t.Errorf("%s got %q, expected %q", textCall, b.String(), "result")
|
|
}
|
|
}
|
|
|
|
// Issue 39807. There was a race applying escapeTemplate.
|
|
|
|
const raceText = `
|
|
{{- define "jstempl" -}}
|
|
var v = "v";
|
|
{{- end -}}
|
|
<script type="application/javascript">
|
|
{{ template "jstempl" $ }}
|
|
</script>
|
|
`
|
|
|
|
func TestEscapeRace(t *testing.T) {
|
|
t.Skip("this test currently fails with -race; see issue #39807")
|
|
|
|
tmpl := New("")
|
|
_, err := tmpl.New("templ.html").Parse(raceText)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
const count = 20
|
|
for i := 0; i < count; i++ {
|
|
_, err := tmpl.New(fmt.Sprintf("x%d.html", i)).Parse(`{{ template "templ.html" .}}`)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
var wg sync.WaitGroup
|
|
for i := 0; i < 10; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
for j := 0; j < count; j++ {
|
|
sub := tmpl.Lookup(fmt.Sprintf("x%d.html", j))
|
|
if err := sub.Execute(io.Discard, nil); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
func TestRecursiveExecute(t *testing.T) {
|
|
tmpl := New("")
|
|
|
|
recur := func() (HTML, error) {
|
|
var sb strings.Builder
|
|
if err := tmpl.ExecuteTemplate(&sb, "subroutine", nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
return HTML(sb.String()), nil
|
|
}
|
|
|
|
m := FuncMap{
|
|
"recur": recur,
|
|
}
|
|
|
|
top, err := tmpl.New("x.html").Funcs(m).Parse(`{{recur}}`)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
_, err = tmpl.New("subroutine").Parse(`<a href="/x?p={{"'a<b'"}}">`)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := top.Execute(io.Discard, nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
// recursiveInvoker is for TestRecursiveExecuteViaMethod.
|
|
type recursiveInvoker struct {
|
|
t *testing.T
|
|
tmpl *Template
|
|
}
|
|
|
|
func (r *recursiveInvoker) Recur() (string, error) {
|
|
var sb strings.Builder
|
|
if err := r.tmpl.ExecuteTemplate(&sb, "subroutine", nil); err != nil {
|
|
r.t.Fatal(err)
|
|
}
|
|
return sb.String(), nil
|
|
}
|
|
|
|
func TestRecursiveExecuteViaMethod(t *testing.T) {
|
|
tmpl := New("")
|
|
top, err := tmpl.New("x.html").Parse(`{{.Recur}}`)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
_, err = tmpl.New("subroutine").Parse(`<a href="/x?p={{"'a<b'"}}">`)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
r := &recursiveInvoker{
|
|
t: t,
|
|
tmpl: tmpl,
|
|
}
|
|
if err := top.Execute(io.Discard, r); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
// Issue 43295.
|
|
func TestTemplateFuncsAfterClone(t *testing.T) {
|
|
s := `{{ f . }}`
|
|
want := "test"
|
|
orig := New("orig").Funcs(map[string]interface{}{
|
|
"f": func(in string) string {
|
|
return in
|
|
},
|
|
}).New("child")
|
|
|
|
overviewTmpl := Must(Must(orig.Clone()).Parse(s))
|
|
var out strings.Builder
|
|
if err := overviewTmpl.Execute(&out, want); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if got := out.String(); got != want {
|
|
t.Fatalf("got %q; want %q", got, want)
|
|
}
|
|
}
|