mirror of
https://github.com/golang/go.git
synced 2025-12-08 06:10:04 +00:00
base64 -> encoding/base64
base85 -> encoding/ascii85, encoding/git85 debug/binary -> encoding/binary R=r DELTA=3190 (1884 added, 1297 deleted, 9 changed) OCL=35923 CL=35929
This commit is contained in:
Russ Cox
parent
430d462391
commit
357b770def
21 changed files with 676 additions and 89 deletions
199
src/pkg/encoding/git85/git_test.go
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199
src/pkg/encoding/git85/git_test.go
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@ -0,0 +1,199 @@
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// Copyright 2009 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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package git85
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import (
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"bytes";
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"io";
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"os";
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"reflect";
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"strings";
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"testing";
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)
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type testpair struct {
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decoded, encoded string;
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}
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func testEqual(t *testing.T, msg string, args ...) bool {
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v := reflect.NewValue(args).(*reflect.StructValue);
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v1 := v.Field(v.NumField() - 2);
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v2 := v.Field(v.NumField() - 1);
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if v1.Interface() != v2.Interface() {
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t.Errorf(msg, args);
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return false;
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}
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return true;
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}
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func TestGitTable(t *testing.T) {
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var saw [256]bool;
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for i, c := range encode {
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if decode[c] != uint8(i+1) {
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t.Errorf("decode['%c'] = %d, want %d", c, decode[c], i+1);
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}
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saw[c] = true;
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}
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for i, b := range saw {
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if !b && decode[i] != 0 {
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t.Errorf("decode[%d] = %d, want 0", i, decode[i]);
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}
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}
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}
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var gitPairs = []testpair{
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// Wikipedia example, adapted.
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testpair{
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"Man is distinguished, not only by his reason, but by this singular passion from "
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"other animals, which is a lust of the mind, that by a perseverance of delight in "
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"the continued and indefatigable generation of knowledge, exceeds the short "
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"vehemence of any carnal pleasure.",
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"zO<`^zX>%ZCX>)XGZfA9Ab7*B`EFf-gbRchTY<VDJc_3(Mb0BhMVRLV8EFfZabRc4R\n"
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"zAarPHb0BkRZfA9DVR9gFVRLh7Z*CxFa&K)QZ**v7av))DX>DO_b1WctXlY|;AZc?T\n"
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"zVIXXEb95kYW*~HEWgu;7Ze%PVbZB98AYyqSVIXj2a&u*NWpZI|V`U(3W*}r`Y-wj`\n"
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"zbRcPNAarPDAY*TCbZKsNWn>^>Ze$>7Ze(R<VRUI{VPb4$AZKN6WpZJ3X>V>IZ)PBC\n"
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"zZf|#NWn^b%EFfigV`XJzb0BnRWgv5CZ*p`Xc4cT~ZDnp_Wgu^6AYpEKAY);2ZeeU7\n"
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"IaBO8^b9HiME&u=k\n"
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}
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}
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var gitBigtest = gitPairs[len(gitPairs)-1];
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func TestEncode(t *testing.T) {
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for _, p := range gitPairs {
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buf := make([]byte, EncodedLen(len(p.decoded)));
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n := Encode(strings.Bytes(p.decoded), buf);
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if n != len(buf) {
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t.Errorf("EncodedLen does not agree with Encode");
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}
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buf = buf[0:n];
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testEqual(t, "Encode(%q) = %q, want %q", p.decoded, string(buf), p.encoded);
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}
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}
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func TestEncoder(t *testing.T) {
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for _, p := range gitPairs {
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bb := &bytes.Buffer{};
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encoder := NewEncoder(bb);
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encoder.Write(strings.Bytes(p.decoded));
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encoder.Close();
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testEqual(t, "Encode(%q) = %q, want %q", p.decoded, bb.String(), p.encoded);
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}
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}
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func TestEncoderBuffering(t *testing.T) {
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input := strings.Bytes(gitBigtest.decoded);
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for bs := 1; bs <= 12; bs++ {
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bb := &bytes.Buffer{};
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encoder := NewEncoder(bb);
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for pos := 0; pos < len(input); pos += bs {
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end := pos+bs;
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if end > len(input) {
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end = len(input);
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}
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n, err := encoder.Write(input[pos:end]);
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testEqual(t, "Write(%q) gave error %v, want %v", input[pos:end], err, os.Error(nil));
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testEqual(t, "Write(%q) gave length %v, want %v", input[pos:end], n, end-pos);
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}
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err := encoder.Close();
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testEqual(t, "Close gave error %v, want %v", err, os.Error(nil));
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testEqual(t, "Encoding/%d of %q = %q, want %q", bs, gitBigtest.decoded, bb.String(), gitBigtest.encoded);
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}
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}
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func TestDecode(t *testing.T) {
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for _, p := range gitPairs {
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dbuf := make([]byte, 4*len(p.encoded));
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ndst, err := Decode(strings.Bytes(p.encoded), dbuf);
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testEqual(t, "Decode(%q) = error %v, want %v", p.encoded, err, os.Error(nil));
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testEqual(t, "Decode(%q) = ndst %v, want %v", p.encoded, ndst, len(p.decoded));
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testEqual(t, "Decode(%q) = %q, want %q", p.encoded, string(dbuf[0:ndst]), p.decoded);
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}
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}
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func TestDecoder(t *testing.T) {
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for _, p := range gitPairs {
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decoder := NewDecoder(bytes.NewBufferString(p.encoded));
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dbuf, err := io.ReadAll(decoder);
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if err != nil {
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t.Fatal("Read failed", err);
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}
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testEqual(t, "Read from %q = length %v, want %v", p.encoded, len(dbuf), len(p.decoded));
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testEqual(t, "Decoding of %q = %q, want %q", p.encoded, string(dbuf), p.decoded);
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if err != nil {
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testEqual(t, "Read from %q = %v, want %v", p.encoded, err, os.EOF);
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}
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}
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}
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func TestDecoderBuffering(t *testing.T) {
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for bs := 1; bs <= 12; bs++ {
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decoder := NewDecoder(bytes.NewBufferString(gitBigtest.encoded));
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buf := make([]byte, len(gitBigtest.decoded)+12);
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var total int;
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for total = 0; total < len(gitBigtest.decoded); {
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n, err := decoder.Read(buf[total : total+bs]);
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testEqual(t, "Read from %q at pos %d = %d, %v, want _, %v", gitBigtest.encoded, total, n, err, os.Error(nil));
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total += n;
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}
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testEqual(t, "Decoding/%d of %q = %q, want %q", bs, gitBigtest.encoded, string(buf[0:total]), gitBigtest.decoded);
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}
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}
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func TestDecodeCorrupt(t *testing.T) {
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type corrupt struct {
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e string;
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p int;
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}
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examples := []corrupt{
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corrupt{"v", 0},
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corrupt{"!z!!!!!!!!!", 0},
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};
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for _, e := range examples {
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dbuf := make([]byte, 2*len(e.e));
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_, err := Decode(strings.Bytes(e.e), dbuf);
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switch err := err.(type) {
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case CorruptInputError:
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testEqual(t, "Corruption in %q at offset %v, want %v", e.e, int(err), e.p);
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default:
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t.Error("Decoder failed to detect corruption in", e);
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}
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}
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}
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func TestGitBig(t *testing.T) {
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n := 3*1000 + 1;
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raw := make([]byte, n);
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const alpha = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
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for i := 0; i < n; i++ {
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raw[i] = alpha[i%len(alpha)];
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}
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encoded := new(bytes.Buffer);
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w := NewEncoder(encoded);
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nn, err := w.Write(raw);
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if nn != n || err != nil {
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t.Fatalf("Encoder.Write(raw) = %d, %v want %d, nil", nn, err, n);
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}
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err = w.Close();
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if err != nil {
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t.Fatalf("Encoder.Close() = %v want nil", err);
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}
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decoded, err := io.ReadAll(NewDecoder(encoded));
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if err != nil {
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t.Fatalf("io.ReadAll(NewDecoder(...)): %v", err);
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}
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if !bytes.Equal(raw, decoded) {
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var i int;
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for i = 0; i < len(decoded) && i < len(raw); i++ {
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if decoded[i] != raw[i] {
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break;
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}
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}
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t.Errorf("Decode(Encode(%d-byte string)) failed at offset %d", n, i);
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}
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}
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