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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [compress/] [gzip/] [gzip_test.go] - Blame information for rev 775

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Line No. Rev Author Line
1 747 jeremybenn 
// Copyright 2010 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 gzip
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import (
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        "bufio"
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        "bytes"
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        "io"
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        "io/ioutil"
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        "testing"
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        "time"
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)
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// pipe creates two ends of a pipe that gzip and gunzip, and runs dfunc at the
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// writer end and cfunc at the reader end.
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func pipe(t *testing.T, dfunc func(*Compressor), cfunc func(*Decompressor)) {
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        piper, pipew := io.Pipe()
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        defer piper.Close()
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        go func() {
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                defer pipew.Close()
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                compressor, err := NewWriter(pipew)
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                if err != nil {
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                        t.Fatalf("%v", err)
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                }
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                defer compressor.Close()
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                dfunc(compressor)
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        }()
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        decompressor, err := NewReader(piper)
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        if err != nil {
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                t.Fatalf("%v", err)
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        }
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        defer decompressor.Close()
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        cfunc(decompressor)
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}
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// Tests that an empty payload still forms a valid GZIP stream.
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func TestEmpty(t *testing.T) {
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        pipe(t,
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                func(compressor *Compressor) {},
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                func(decompressor *Decompressor) {
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                        b, err := ioutil.ReadAll(decompressor)
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                        if err != nil {
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                                t.Fatalf("%v", err)
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                        }
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                        if len(b) != 0 {
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                                t.Fatalf("did not read an empty slice")
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                        }
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                })
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}
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// Tests that gzipping and then gunzipping is the identity function.
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func TestWriter(t *testing.T) {
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        pipe(t,
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                func(compressor *Compressor) {
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                        compressor.Comment = "Äußerung"
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                        //compressor.Comment = "comment"
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                        compressor.Extra = []byte("extra")
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                        compressor.ModTime = time.Unix(1e8, 0)
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                        compressor.Name = "name"
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                        _, err := compressor.Write([]byte("payload"))
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                        if err != nil {
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                                t.Fatalf("%v", err)
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                        }
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                },
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                func(decompressor *Decompressor) {
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                        b, err := ioutil.ReadAll(decompressor)
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                        if err != nil {
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                                t.Fatalf("%v", err)
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                        }
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                        if string(b) != "payload" {
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                                t.Fatalf("payload is %q, want %q", string(b), "payload")
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                        }
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                        if decompressor.Comment != "Äußerung" {
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                                t.Fatalf("comment is %q, want %q", decompressor.Comment, "Äußerung")
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                        }
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                        if string(decompressor.Extra) != "extra" {
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                                t.Fatalf("extra is %q, want %q", decompressor.Extra, "extra")
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                        }
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                        if decompressor.ModTime.Unix() != 1e8 {
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                                t.Fatalf("mtime is %d, want %d", decompressor.ModTime.Unix(), uint32(1e8))
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                        }
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                        if decompressor.Name != "name" {
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                                t.Fatalf("name is %q, want %q", decompressor.Name, "name")
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                        }
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                })
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}
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func TestLatin1(t *testing.T) {
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        latin1 := []byte{0xc4, 'u', 0xdf, 'e', 'r', 'u', 'n', 'g', 0}
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        utf8 := "Äußerung"
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        z := Decompressor{r: bufio.NewReader(bytes.NewBuffer(latin1))}
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        s, err := z.readString()
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        if err != nil {
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                t.Fatalf("%v", err)
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        }
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        if s != utf8 {
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                t.Fatalf("string is %q, want %q", s, utf8)
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        }
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        buf := bytes.NewBuffer(make([]byte, 0, len(latin1)))
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        c := Compressor{w: buf}
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        if err = c.writeString(utf8); err != nil {
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                t.Fatalf("%v", err)
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        }
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        s = buf.String()
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        if s != string(latin1) {
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                t.Fatalf("string is %v, want %v", s, latin1)
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        }
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        //if s, err = buf.ReadString(0); err != nil {
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        //t.Fatalf("%v", err)
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        //}
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}

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