Subversion Repositories openrisc

// Copyright 2009 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 gzip

import (
        "bytes"
        "io"
        "testing"
)

type gunzipTest struct {
        name string
        desc string
        raw  string
        gzip []byte
        err  error
}

var gunzipTests = []gunzipTest{
        { // has 1 empty fixed-huffman block
                "empty.txt",
                "empty.txt",
                "",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xf7, 0x5e, 0x14, 0x4a,
                        0x00, 0x03, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0x03, 0x00, 0x00, 0x00,
                        0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                },
                nil,
        },
        { // has 1 non-empty fixed huffman block
                "hello.txt",
                "hello.txt",
                "hello world\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
                        0x00, 0x00,
                },
                nil,
        },
        { // concatenation
                "hello.txt",
                "hello.txt x2",
                "hello world\n" +
                        "hello world\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
                        0x00, 0x00,
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
                        0x00, 0x00,
                },
                nil,
        },
        { // has a fixed huffman block with some length-distance pairs
                "shesells.txt",
                "shesells.txt",
                "she sells seashells by the seashore\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0x72, 0x66, 0x8b, 0x4a,
                        0x00, 0x03, 0x73, 0x68, 0x65, 0x73, 0x65, 0x6c,
                        0x6c, 0x73, 0x2e, 0x74, 0x78, 0x74, 0x00, 0x2b,
                        0xce, 0x48, 0x55, 0x28, 0x4e, 0xcd, 0xc9, 0x29,
                        0x06, 0x92, 0x89, 0xc5, 0x19, 0x60, 0x56, 0x52,
                        0xa5, 0x42, 0x09, 0x58, 0x18, 0x28, 0x90, 0x5f,
                        0x94, 0xca, 0x05, 0x00, 0x76, 0xb0, 0x3b, 0xeb,
                        0x24, 0x00, 0x00, 0x00,
                },
                nil,
        },
        { // has dynamic huffman blocks
                "gettysburg",
                "gettysburg",
                "  Four score and seven years ago our fathers brought forth on\n" +
                        "this continent, a new nation, conceived in Liberty, and dedicated\n" +
                        "to the proposition that all men are created equal.\n" +
                        "  Now we are engaged in a great Civil War, testing whether that\n" +
                        "nation, or any nation so conceived and so dedicated, can long\n" +
                        "endure.\n" +
                        "  We are met on a great battle-field of that war.\n" +
                        "  We have come to dedicate a portion of that field, as a final\n" +
                        "resting place for those who here gave their lives that that\n" +
                        "nation might live.  It is altogether fitting and proper that\n" +
                        "we should do this.\n" +
                        "  But, in a larger sense, we can not dedicate — we can not\n" +
                        "consecrate — we can not hallow — this ground.\n" +
                        "  The brave men, living and dead, who struggled here, have\n" +
                        "consecrated it, far above our poor power to add or detract.\n" +
                        "The world will little note, nor long remember what we say here,\n" +
                        "but it can never forget what they did here.\n" +
                        "  It is for us the living, rather, to be dedicated here to the\n" +
                        "unfinished work which they who fought here have thus far so\n" +
                        "nobly advanced.  It is rather for us to be here dedicated to\n" +
                        "the great task remaining before us — that from these honored\n" +
                        "dead we take increased devotion to that cause for which they\n" +
                        "gave the last full measure of devotion —\n" +
                        "  that we here highly resolve that these dead shall not have\n" +
                        "died in vain — that this nation, under God, shall have a new\n" +
                        "birth of freedom — and that government of the people, by the\n" +
                        "people, for the people, shall not perish from this earth.\n" +
                        "\n" +
                        "Abraham Lincoln, November 19, 1863, Gettysburg, Pennsylvania\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xd1, 0x12, 0x2b, 0x4a,
                        0x00, 0x03, 0x67, 0x65, 0x74, 0x74, 0x79, 0x73,
                        0x62, 0x75, 0x72, 0x67, 0x00, 0x65, 0x54, 0xcd,
                        0x6e, 0xd4, 0x30, 0x10, 0xbe, 0xfb, 0x29, 0xe6,
                        0x01, 0x42, 0xa5, 0x0a, 0x09, 0xc1, 0x11, 0x90,
                        0x40, 0x48, 0xa8, 0xe2, 0x80, 0xd4, 0xf3, 0x24,
                        0x9e, 0x24, 0x56, 0xbd, 0x9e, 0xc5, 0x76, 0x76,
                        0x95, 0x1b, 0x0f, 0xc1, 0x13, 0xf2, 0x24, 0x7c,
                        0x63, 0x77, 0x9b, 0x4a, 0x5c, 0xaa, 0x6e, 0x6c,
                        0xcf, 0x7c, 0x7f, 0x33, 0x44, 0x5f, 0x74, 0xcb,
                        0x54, 0x26, 0xcd, 0x42, 0x9c, 0x3c, 0x15, 0xb9,
                        0x48, 0xa2, 0x5d, 0x38, 0x17, 0xe2, 0x45, 0xc9,
                        0x4e, 0x67, 0xae, 0xab, 0xe0, 0xf7, 0x98, 0x75,
                        0x5b, 0xd6, 0x4a, 0xb3, 0xe6, 0xba, 0x92, 0x26,
                        0x57, 0xd7, 0x50, 0x68, 0xd2, 0x54, 0x43, 0x92,
                        0x54, 0x07, 0x62, 0x4a, 0x72, 0xa5, 0xc4, 0x35,
                        0x68, 0x1a, 0xec, 0x60, 0x92, 0x70, 0x11, 0x4f,
                        0x21, 0xd1, 0xf7, 0x30, 0x4a, 0xae, 0xfb, 0xd0,
                        0x9a, 0x78, 0xf1, 0x61, 0xe2, 0x2a, 0xde, 0x55,
                        0x25, 0xd4, 0xa6, 0x73, 0xd6, 0xb3, 0x96, 0x60,
                        0xef, 0xf0, 0x9b, 0x2b, 0x71, 0x8c, 0x74, 0x02,
                        0x10, 0x06, 0xac, 0x29, 0x8b, 0xdd, 0x25, 0xf9,
                        0xb5, 0x71, 0xbc, 0x73, 0x44, 0x0f, 0x7a, 0xa5,
                        0xab, 0xb4, 0x33, 0x49, 0x0b, 0x2f, 0xbd, 0x03,
                        0xd3, 0x62, 0x17, 0xe9, 0x73, 0xb8, 0x84, 0x48,
                        0x8f, 0x9c, 0x07, 0xaa, 0x52, 0x00, 0x6d, 0xa1,
                        0xeb, 0x2a, 0xc6, 0xa0, 0x95, 0x76, 0x37, 0x78,
                        0x9a, 0x81, 0x65, 0x7f, 0x46, 0x4b, 0x45, 0x5f,
                        0xe1, 0x6d, 0x42, 0xe8, 0x01, 0x13, 0x5c, 0x38,
                        0x51, 0xd4, 0xb4, 0x38, 0x49, 0x7e, 0xcb, 0x62,
                        0x28, 0x1e, 0x3b, 0x82, 0x93, 0x54, 0x48, 0xf1,
                        0xd2, 0x7d, 0xe4, 0x5a, 0xa3, 0xbc, 0x99, 0x83,
                        0x44, 0x4f, 0x3a, 0x77, 0x36, 0x57, 0xce, 0xcf,
                        0x2f, 0x56, 0xbe, 0x80, 0x90, 0x9e, 0x84, 0xea,
                        0x51, 0x1f, 0x8f, 0xcf, 0x90, 0xd4, 0x60, 0xdc,
                        0x5e, 0xb4, 0xf7, 0x10, 0x0b, 0x26, 0xe0, 0xff,
                        0xc4, 0xd1, 0xe5, 0x67, 0x2e, 0xe7, 0xc8, 0x93,
                        0x98, 0x05, 0xb8, 0xa8, 0x45, 0xc0, 0x4d, 0x09,
                        0xdc, 0x84, 0x16, 0x2b, 0x0d, 0x9a, 0x21, 0x53,
                        0x04, 0x8b, 0xd2, 0x0b, 0xbd, 0xa2, 0x4c, 0xa7,
                        0x60, 0xee, 0xd9, 0xe1, 0x1d, 0xd1, 0xb7, 0x4a,
                        0x30, 0x8f, 0x63, 0xd5, 0xa5, 0x8b, 0x33, 0x87,
                        0xda, 0x1a, 0x18, 0x79, 0xf3, 0xe3, 0xa6, 0x17,
                        0x94, 0x2e, 0xab, 0x6e, 0xa0, 0xe3, 0xcd, 0xac,
                        0x50, 0x8c, 0xca, 0xa7, 0x0d, 0x76, 0x37, 0xd1,
                        0x23, 0xe7, 0x05, 0x57, 0x8b, 0xa4, 0x22, 0x83,
                        0xd9, 0x62, 0x52, 0x25, 0xad, 0x07, 0xbb, 0xbf,
                        0xbf, 0xff, 0xbc, 0xfa, 0xee, 0x20, 0x73, 0x91,
                        0x29, 0xff, 0x7f, 0x02, 0x71, 0x62, 0x84, 0xb5,
                        0xf6, 0xb5, 0x25, 0x6b, 0x41, 0xde, 0x92, 0xb7,
                        0x76, 0x3f, 0x91, 0x91, 0x31, 0x1b, 0x41, 0x84,
                        0x62, 0x30, 0x0a, 0x37, 0xa4, 0x5e, 0x18, 0x3a,
                        0x99, 0x08, 0xa5, 0xe6, 0x6d, 0x59, 0x22, 0xec,
                        0x33, 0x39, 0x86, 0x26, 0xf5, 0xab, 0x66, 0xc8,
                        0x08, 0x20, 0xcf, 0x0c, 0xd7, 0x47, 0x45, 0x21,
                        0x0b, 0xf6, 0x59, 0xd5, 0xfe, 0x5c, 0x8d, 0xaa,
                        0x12, 0x7b, 0x6f, 0xa1, 0xf0, 0x52, 0x33, 0x4f,
                        0xf5, 0xce, 0x59, 0xd3, 0xab, 0x66, 0x10, 0xbf,
                        0x06, 0xc4, 0x31, 0x06, 0x73, 0xd6, 0x80, 0xa2,
                        0x78, 0xc2, 0x45, 0xcb, 0x03, 0x65, 0x39, 0xc9,
                        0x09, 0xd1, 0x06, 0x04, 0x33, 0x1a, 0x5a, 0xf1,
                        0xde, 0x01, 0xb8, 0x71, 0x83, 0xc4, 0xb5, 0xb3,
                        0xc3, 0x54, 0x65, 0x33, 0x0d, 0x5a, 0xf7, 0x9b,
                        0x90, 0x7c, 0x27, 0x1f, 0x3a, 0x58, 0xa3, 0xd8,
                        0xfd, 0x30, 0x5f, 0xb7, 0xd2, 0x66, 0xa2, 0x93,
                        0x1c, 0x28, 0xb7, 0xe9, 0x1b, 0x0c, 0xe1, 0x28,
                        0x47, 0x26, 0xbb, 0xe9, 0x7d, 0x7e, 0xdc, 0x96,
                        0x10, 0x92, 0x50, 0x56, 0x7c, 0x06, 0xe2, 0x27,
                        0xb4, 0x08, 0xd3, 0xda, 0x7b, 0x98, 0x34, 0x73,
                        0x9f, 0xdb, 0xf6, 0x62, 0xed, 0x31, 0x41, 0x13,
                        0xd3, 0xa2, 0xa8, 0x4b, 0x3a, 0xc6, 0x1d, 0xe4,
                        0x2f, 0x8c, 0xf8, 0xfb, 0x97, 0x64, 0xf4, 0xb6,
                        0x2f, 0x80, 0x5a, 0xf3, 0x56, 0xe0, 0x40, 0x50,
                        0xd5, 0x19, 0xd0, 0x1e, 0xfc, 0xca, 0xe5, 0xc9,
                        0xd4, 0x60, 0x00, 0x81, 0x2e, 0xa3, 0xcc, 0xb6,
                        0x52, 0xf0, 0xb4, 0xdb, 0x69, 0x99, 0xce, 0x7a,
                        0x32, 0x4c, 0x08, 0xed, 0xaa, 0x10, 0x10, 0xe3,
                        0x6f, 0xee, 0x99, 0x68, 0x95, 0x9f, 0x04, 0x71,
                        0xb2, 0x49, 0x2f, 0x62, 0xa6, 0x5e, 0xb4, 0xef,
                        0x02, 0xed, 0x4f, 0x27, 0xde, 0x4a, 0x0f, 0xfd,
                        0xc1, 0xcc, 0xdd, 0x02, 0x8f, 0x08, 0x16, 0x54,
                        0xdf, 0xda, 0xca, 0xe0, 0x82, 0xf1, 0xb4, 0x31,
                        0x7a, 0xa9, 0x81, 0xfe, 0x90, 0xb7, 0x3e, 0xdb,
                        0xd3, 0x35, 0xc0, 0x20, 0x80, 0x33, 0x46, 0x4a,
                        0x63, 0xab, 0xd1, 0x0d, 0x29, 0xd2, 0xe2, 0x84,
                        0xb8, 0xdb, 0xfa, 0xe9, 0x89, 0x44, 0x86, 0x7c,
                        0xe8, 0x0b, 0xe6, 0x02, 0x6a, 0x07, 0x9b, 0x96,
                        0xd0, 0xdb, 0x2e, 0x41, 0x4c, 0xa1, 0xd5, 0x57,
                        0x45, 0x14, 0xfb, 0xe3, 0xa6, 0x72, 0x5b, 0x87,
                        0x6e, 0x0c, 0x6d, 0x5b, 0xce, 0xe0, 0x2f, 0xe2,
                        0x21, 0x81, 0x95, 0xb0, 0xe8, 0xb6, 0x32, 0x0b,
                        0xb2, 0x98, 0x13, 0x52, 0x5d, 0xfb, 0xec, 0x63,
                        0x17, 0x8a, 0x9e, 0x23, 0x22, 0x36, 0xee, 0xcd,
                        0xda, 0xdb, 0xcf, 0x3e, 0xf1, 0xc7, 0xf1, 0x01,
                        0x12, 0x93, 0x0a, 0xeb, 0x6f, 0xf2, 0x02, 0x15,
                        0x96, 0x77, 0x5d, 0xef, 0x9c, 0xfb, 0x88, 0x91,
                        0x59, 0xf9, 0x84, 0xdd, 0x9b, 0x26, 0x8d, 0x80,
                        0xf9, 0x80, 0x66, 0x2d, 0xac, 0xf7, 0x1f, 0x06,
                        0xba, 0x7f, 0xff, 0xee, 0xed, 0x40, 0x5f, 0xa5,
                        0xd6, 0xbd, 0x8c, 0x5b, 0x46, 0xd2, 0x7e, 0x48,
                        0x4a, 0x65, 0x8f, 0x08, 0x42, 0x60, 0xf7, 0x0f,
                        0xb9, 0x16, 0x0b, 0x0c, 0x1a, 0x06, 0x00, 0x00,
                },
                nil,
        },
        { // has 1 non-empty fixed huffman block then garbage
                "hello.txt",
                "hello.txt + garbage",
                "hello world\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
                        0x00, 0x00, 'g', 'a', 'r', 'b', 'a', 'g', 'e', '!', '!', '!',
                },
                ErrHeader,
        },
        { // has 1 non-empty fixed huffman block not enough header
                "hello.txt",
                "hello.txt + garbage",
                "hello world\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
                        0x00, 0x00, gzipID1,
                },
                io.ErrUnexpectedEOF,
        },
        { // has 1 non-empty fixed huffman block but corrupt checksum
                "hello.txt",
                "hello.txt + corrupt checksum",
                "hello world\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0x0c, 0x00,
                        0x00, 0x00,
                },
                ErrChecksum,
        },
        { // has 1 non-empty fixed huffman block but corrupt size
                "hello.txt",
                "hello.txt + corrupt size",
                "hello world\n",
                []byte{
                        0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
                        0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
                        0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
                        0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
                        0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0xff, 0x00,
                        0x00, 0x00,
                },
                ErrChecksum,
        },
}

func TestDecompressor(t *testing.T) {
        b := new(bytes.Buffer)
        for _, tt := range gunzipTests {
                in := bytes.NewBuffer(tt.gzip)
                gzip, err := NewReader(in)
                if err != nil {
                        t.Errorf("%s: NewReader: %s", tt.name, err)
                        continue
                }
                defer gzip.Close()
                if tt.name != gzip.Name {
                        t.Errorf("%s: got name %s", tt.name, gzip.Name)
                }
                b.Reset()
                n, err := io.Copy(b, gzip)
                if err != tt.err {
                        t.Errorf("%s: io.Copy: %v want %v", tt.name, err, tt.err)
                }
                s := b.String()
                if s != tt.raw {
                        t.Errorf("%s: got %d-byte %q want %d-byte %q", tt.name, n, s, len(tt.raw), tt.raw)
                }
        }
}