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cmd/cgo: merge overlayDir into one package

Browse source 
There are many copies of overlaydir_test.go between the cgo tests
from when these couldn't share code. Now that they can, merge these
copies into a cmd/cgo/internal/cgotest package.

Change-Id: I203217f5d08e6306cb049a13718652cf7c447b80
Reviewed-on: https://go-review.googlesource.com/c/go/+/497078
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Austin Clements 2023-05-22 10:32:31 -04:00
parent 96a773d61b
commit a1f3dc33dc
14 changed files with 18 additions and 482 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/cmd/cgo/internal/testso/overlaydir_test.go → src/cmd/cgo/internal/cgotest/overlaydir.go
View file

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package so_test
package cgotest
import (
"io"
@ -11,11 +11,8 @@ import (
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
// OverlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
func OverlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err

3
src/cmd/cgo/internal/testcarchive/carchive_test.go
View file

@ -12,6 +12,7 @@ package carchive_test
import (
"bufio"
"bytes"
"cmd/cgo/internal/cgotest"
"debug/elf"
"flag"
"fmt"
@ -82,7 +83,7 @@ func testMain(m *testing.M) int {
// Copy testdata into GOPATH/src/testarchive, along with a go.mod file
// declaring the same path.
modRoot := filepath.Join(GOPATH, "src", "testcarchive")
if err := overlayDir(modRoot, "testdata"); err != nil {
if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
log.Panic(err)
}
if err := os.Chdir(modRoot); err != nil {

78
src/cmd/cgo/internal/testcarchive/overlaydir_test.go
View file

@ -1,78 +0,0 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package carchive_test
import (
"io"
"os"
"path/filepath"
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err
}
srcRoot, err := filepath.Abs(srcRoot)
if err != nil {
return err
}
return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
if err != nil || srcPath == srcRoot {
return err
}
suffix := strings.TrimPrefix(srcPath, srcRoot)
for len(suffix) > 0 && suffix[0] == filepath.Separator {
suffix = suffix[1:]
}
dstPath := filepath.Join(dstRoot, suffix)
perm := info.Mode() & os.ModePerm
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(srcPath)
if err != nil {
return err
}
perm = info.Mode() & os.ModePerm
}
// Always copy directories (don't symlink them).
// If we add a file in the overlay, we don't want to add it in the original.
if info.IsDir() {
return os.MkdirAll(dstPath, perm|0200)
}
// If the OS supports symlinks, use them instead of copying bytes.
if err := os.Symlink(srcPath, dstPath); err == nil {
return nil
}
// Otherwise, copy the bytes.
src, err := os.Open(srcPath)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
})
}

3
src/cmd/cgo/internal/testcshared/cshared_test.go
View file

@ -7,6 +7,7 @@ package cshared_test
import (
"bufio"
"bytes"
"cmd/cgo/internal/cgotest"
"debug/elf"
"debug/pe"
"encoding/binary"
@ -137,7 +138,7 @@ func testMain(m *testing.M) int {
os.Setenv("GOPATH", GOPATH)
modRoot := filepath.Join(GOPATH, "src", "testcshared")
if err := overlayDir(modRoot, "testdata"); err != nil {
if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
log.Panic(err)
}
if err := os.Chdir(modRoot); err != nil {

78
src/cmd/cgo/internal/testcshared/overlaydir_test.go
View file

@ -1,78 +0,0 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cshared_test
import (
"io"
"os"
"path/filepath"
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err
}
srcRoot, err := filepath.Abs(srcRoot)
if err != nil {
return err
}
return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
if err != nil || srcPath == srcRoot {
return err
}
suffix := strings.TrimPrefix(srcPath, srcRoot)
for len(suffix) > 0 && suffix[0] == filepath.Separator {
suffix = suffix[1:]
}
dstPath := filepath.Join(dstRoot, suffix)
perm := info.Mode() & os.ModePerm
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(srcPath)
if err != nil {
return err
}
perm = info.Mode() & os.ModePerm
}
// Always copy directories (don't symlink them).
// If we add a file in the overlay, we don't want to add it in the original.
if info.IsDir() {
return os.MkdirAll(dstPath, perm|0200)
}
// If the OS supports symlinks, use them instead of copying bytes.
if err := os.Symlink(srcPath, dstPath); err == nil {
return nil
}
// Otherwise, copy the bytes.
src, err := os.Open(srcPath)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
})
}

3
src/cmd/cgo/internal/testlife/life_test.go
View file

@ -6,6 +6,7 @@ package life_test
import (
"bytes"
"cmd/cgo/internal/cgotest"
"internal/testenv"
"log"
"os"
@ -30,7 +31,7 @@ func testMain(m *testing.M) int {
// Copy testdata into GOPATH/src/cgolife, along with a go.mod file
// declaring the same path.
modRoot := filepath.Join(GOPATH, "src", "cgolife")
if err := overlayDir(modRoot, "testdata"); err != nil {
if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
log.Panic(err)
}
if err := os.Chdir(modRoot); err != nil {

78
src/cmd/cgo/internal/testlife/overlaydir_test.go
View file

@ -1,78 +0,0 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package life_test
import (
"io"
"os"
"path/filepath"
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err
}
srcRoot, err := filepath.Abs(srcRoot)
if err != nil {
return err
}
return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
if err != nil || srcPath == srcRoot {
return err
}
suffix := strings.TrimPrefix(srcPath, srcRoot)
for len(suffix) > 0 && suffix[0] == filepath.Separator {
suffix = suffix[1:]
}
dstPath := filepath.Join(dstRoot, suffix)
perm := info.Mode() & os.ModePerm
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(srcPath)
if err != nil {
return err
}
perm = info.Mode() & os.ModePerm
}
// Always copy directories (don't symlink them).
// If we add a file in the overlay, we don't want to add it in the original.
if info.IsDir() {
return os.MkdirAll(dstPath, perm|0200)
}
// If the OS supports symlinks, use them instead of copying bytes.
if err := os.Symlink(srcPath, dstPath); err == nil {
return nil
}
// Otherwise, copy the bytes.
src, err := os.Open(srcPath)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
})
}

78
src/cmd/cgo/internal/testplugin/overlaydir_test.go
View file

@ -1,78 +0,0 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package plugin_test
import (
"io"
"os"
"path/filepath"
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err
}
srcRoot, err := filepath.Abs(srcRoot)
if err != nil {
return err
}
return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
if err != nil || srcPath == srcRoot {
return err
}
suffix := strings.TrimPrefix(srcPath, srcRoot)
for len(suffix) > 0 && suffix[0] == filepath.Separator {
suffix = suffix[1:]
}
dstPath := filepath.Join(dstRoot, suffix)
perm := info.Mode() & os.ModePerm
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(srcPath)
if err != nil {
return err
}
perm = info.Mode() & os.ModePerm
}
// Always copy directories (don't symlink them).
// If we add a file in the overlay, we don't want to add it in the original.
if info.IsDir() {
return os.MkdirAll(dstPath, perm|0200)
}
// If the OS supports symlinks, use them instead of copying bytes.
if err := os.Symlink(srcPath, dstPath); err == nil {
return nil
}
// Otherwise, copy the bytes.
src, err := os.Open(srcPath)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
})
}

3
src/cmd/cgo/internal/testplugin/plugin_test.go
View file

@ -6,6 +6,7 @@ package plugin_test
import (
"bytes"
"cmd/cgo/internal/cgotest"
"context"
"flag"
"fmt"
@ -80,7 +81,7 @@ func testMain(m *testing.M) int {
"testdata": modRoot,
filepath.Join("altpath", "testdata"): altRoot,
} {
if err := overlayDir(dstRoot, srcRoot); err != nil {
if err := cgotest.OverlayDir(dstRoot, srcRoot); err != nil {
log.Panic(err)
}
prettyPrintf("mkdir -p %s\n", dstRoot)

78
src/cmd/cgo/internal/testshared/overlaydir_test.go
View file

@ -1,78 +0,0 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package shared_test
import (
"io"
"os"
"path/filepath"
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err
}
srcRoot, err := filepath.Abs(srcRoot)
if err != nil {
return err
}
return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
if err != nil || srcPath == srcRoot {
return err
}
suffix := strings.TrimPrefix(srcPath, srcRoot)
for len(suffix) > 0 && suffix[0] == filepath.Separator {
suffix = suffix[1:]
}
dstPath := filepath.Join(dstRoot, suffix)
perm := info.Mode() & os.ModePerm
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(srcPath)
if err != nil {
return err
}
perm = info.Mode() & os.ModePerm
}
// Always copy directories (don't symlink them).
// If we add a file in the overlay, we don't want to add it in the original.
if info.IsDir() {
return os.MkdirAll(dstPath, perm|0200)
}
// If the OS supports symlinks, use them instead of copying bytes.
if err := os.Symlink(srcPath, dstPath); err == nil {
return nil
}
// Otherwise, copy the bytes.
src, err := os.Open(srcPath)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
})
}

5
src/cmd/cgo/internal/testshared/shared_test.go
View file

@ -7,6 +7,7 @@ package shared_test
import (
"bufio"
"bytes"
"cmd/cgo/internal/cgotest"
"debug/elf"
"encoding/binary"
"flag"
@ -203,7 +204,7 @@ func TestMain(m *testing.M) {
// It returns the directory within gopath at which the module root is located.
func cloneTestdataModule(gopath string) (string, error) {
modRoot := filepath.Join(gopath, "src", "testshared")
if err := overlayDir(modRoot, "testdata"); err != nil {
if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
return "", err
}
if err := os.WriteFile(filepath.Join(modRoot, "go.mod"), []byte("module testshared\n"), 0644); err != nil {
@ -255,7 +256,7 @@ func cloneGOROOTDeps(goroot string) error {
if testing.Verbose() {
fmt.Fprintf(os.Stderr, "+ cp -r %s %s\n", filepath.Join(oldGOROOT, dir), filepath.Join(goroot, dir))
}
if err := overlayDir(filepath.Join(goroot, dir), filepath.Join(oldGOROOT, dir)); err != nil {
if err := cgotest.OverlayDir(filepath.Join(goroot, dir), filepath.Join(oldGOROOT, dir)); err != nil {
return err
}
}

3
src/cmd/cgo/internal/testso/so_test.go
View file

@ -5,6 +5,7 @@
package so_test
import (
"cmd/cgo/internal/cgotest"
"internal/testenv"
"log"
"os"
@ -38,7 +39,7 @@ func testSO(t *testing.T, dir string) {
defer os.RemoveAll(GOPATH)
modRoot := filepath.Join(GOPATH, "src", "cgosotest")
if err := overlayDir(modRoot, filepath.Join("testdata", dir)); err != nil {
if err := cgotest.OverlayDir(modRoot, filepath.Join("testdata", dir)); err != nil {
log.Panic(err)
}
if err := os.WriteFile(filepath.Join(modRoot, "go.mod"), []byte("module cgosotest\n"), 0666); err != nil {

78
src/cmd/cgo/internal/teststdio/overlaydir_test.go
View file

@ -1,78 +0,0 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package stdio_test
import (
"io"
"os"
"path/filepath"
"strings"
)
// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
//
// TODO: Once we no longer need to support the misc module in GOPATH mode,
// factor this function out into a package to reduce duplication.
func overlayDir(dstRoot, srcRoot string) error {
dstRoot = filepath.Clean(dstRoot)
if err := os.MkdirAll(dstRoot, 0777); err != nil {
return err
}
srcRoot, err := filepath.Abs(srcRoot)
if err != nil {
return err
}
return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
if err != nil || srcPath == srcRoot {
return err
}
suffix := strings.TrimPrefix(srcPath, srcRoot)
for len(suffix) > 0 && suffix[0] == filepath.Separator {
suffix = suffix[1:]
}
dstPath := filepath.Join(dstRoot, suffix)
perm := info.Mode() & os.ModePerm
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(srcPath)
if err != nil {
return err
}
perm = info.Mode() & os.ModePerm
}
// Always copy directories (don't symlink them).
// If we add a file in the overlay, we don't want to add it in the original.
if info.IsDir() {
return os.MkdirAll(dstPath, perm|0200)
}
// If the OS supports symlinks, use them instead of copying bytes.
if err := os.Symlink(srcPath, dstPath); err == nil {
return nil
}
// Otherwise, copy the bytes.
src, err := os.Open(srcPath)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
})
}

3
src/cmd/cgo/internal/teststdio/stdio_test.go
View file

@ -6,6 +6,7 @@ package stdio_test
import (
"bytes"
"cmd/cgo/internal/cgotest"
"internal/testenv"
"log"
"os"
@ -31,7 +32,7 @@ func testMain(m *testing.M) int {
// Copy testdata into GOPATH/src/cgostdio, along with a go.mod file
// declaring the same path.
modRoot := filepath.Join(GOPATH, "src", "cgostdio")
if err := overlayDir(modRoot, "testdata"); err != nil {
if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
log.Panic(err)
}
if err := os.Chdir(modRoot); err != nil {