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jeremybenn |
// 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 gzip
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import (
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"bytes"
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"io"
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"testing"
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)
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type gunzipTest struct {
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name string
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desc string
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raw string
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gzip []byte
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err error
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}
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var gunzipTests = []gunzipTest{
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{ // has 1 empty fixed-huffman block
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"empty.txt",
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"empty.txt",
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"",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xf7, 0x5e, 0x14, 0x4a,
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0x00, 0x03, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0x03, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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nil,
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},
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{ // has 1 non-empty fixed huffman block
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"hello.txt",
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"hello.txt",
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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},
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nil,
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},
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{ // concatenation
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"hello.txt",
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"hello.txt x2",
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"hello world\n" +
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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},
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nil,
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},
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{ // has a fixed huffman block with some length-distance pairs
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"shesells.txt",
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"shesells.txt",
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"she sells seashells by the seashore\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0x72, 0x66, 0x8b, 0x4a,
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0x00, 0x03, 0x73, 0x68, 0x65, 0x73, 0x65, 0x6c,
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0x6c, 0x73, 0x2e, 0x74, 0x78, 0x74, 0x00, 0x2b,
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0xce, 0x48, 0x55, 0x28, 0x4e, 0xcd, 0xc9, 0x29,
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0x06, 0x92, 0x89, 0xc5, 0x19, 0x60, 0x56, 0x52,
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0xa5, 0x42, 0x09, 0x58, 0x18, 0x28, 0x90, 0x5f,
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0x94, 0xca, 0x05, 0x00, 0x76, 0xb0, 0x3b, 0xeb,
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0x24, 0x00, 0x00, 0x00,
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},
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nil,
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},
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{ // has dynamic huffman blocks
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"gettysburg",
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"gettysburg",
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" Four score and seven years ago our fathers brought forth on\n" +
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"this continent, a new nation, conceived in Liberty, and dedicated\n" +
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"to the proposition that all men are created equal.\n" +
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" Now we are engaged in a great Civil War, testing whether that\n" +
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"nation, or any nation so conceived and so dedicated, can long\n" +
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"endure.\n" +
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" We are met on a great battle-field of that war.\n" +
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" We have come to dedicate a portion of that field, as a final\n" +
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"resting place for those who here gave their lives that that\n" +
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"nation might live. It is altogether fitting and proper that\n" +
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"we should do this.\n" +
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" But, in a larger sense, we can not dedicate — we can not\n" +
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"consecrate — we can not hallow — this ground.\n" +
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" The brave men, living and dead, who struggled here, have\n" +
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"consecrated it, far above our poor power to add or detract.\n" +
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"The world will little note, nor long remember what we say here,\n" +
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"but it can never forget what they did here.\n" +
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" It is for us the living, rather, to be dedicated here to the\n" +
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"unfinished work which they who fought here have thus far so\n" +
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"nobly advanced. It is rather for us to be here dedicated to\n" +
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"the great task remaining before us — that from these honored\n" +
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"dead we take increased devotion to that cause for which they\n" +
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"gave the last full measure of devotion —\n" +
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" that we here highly resolve that these dead shall not have\n" +
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"died in vain — that this nation, under God, shall have a new\n" +
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"birth of freedom — and that government of the people, by the\n" +
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"people, for the people, shall not perish from this earth.\n" +
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"\n" +
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"Abraham Lincoln, November 19, 1863, Gettysburg, Pennsylvania\n",
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[]byte{
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| 118 |
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0x1f, 0x8b, 0x08, 0x08, 0xd1, 0x12, 0x2b, 0x4a,
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0x00, 0x03, 0x67, 0x65, 0x74, 0x74, 0x79, 0x73,
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| 120 |
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0x62, 0x75, 0x72, 0x67, 0x00, 0x65, 0x54, 0xcd,
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0x6e, 0xd4, 0x30, 0x10, 0xbe, 0xfb, 0x29, 0xe6,
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0x01, 0x42, 0xa5, 0x0a, 0x09, 0xc1, 0x11, 0x90,
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0x40, 0x48, 0xa8, 0xe2, 0x80, 0xd4, 0xf3, 0x24,
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0x9e, 0x24, 0x56, 0xbd, 0x9e, 0xc5, 0x76, 0x76,
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| 125 |
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0x95, 0x1b, 0x0f, 0xc1, 0x13, 0xf2, 0x24, 0x7c,
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| 126 |
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0x63, 0x77, 0x9b, 0x4a, 0x5c, 0xaa, 0x6e, 0x6c,
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| 127 |
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0xcf, 0x7c, 0x7f, 0x33, 0x44, 0x5f, 0x74, 0xcb,
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| 128 |
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0x54, 0x26, 0xcd, 0x42, 0x9c, 0x3c, 0x15, 0xb9,
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0x48, 0xa2, 0x5d, 0x38, 0x17, 0xe2, 0x45, 0xc9,
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| 130 |
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0x4e, 0x67, 0xae, 0xab, 0xe0, 0xf7, 0x98, 0x75,
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0x5b, 0xd6, 0x4a, 0xb3, 0xe6, 0xba, 0x92, 0x26,
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| 132 |
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0x57, 0xd7, 0x50, 0x68, 0xd2, 0x54, 0x43, 0x92,
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| 133 |
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0x54, 0x07, 0x62, 0x4a, 0x72, 0xa5, 0xc4, 0x35,
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| 134 |
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0x68, 0x1a, 0xec, 0x60, 0x92, 0x70, 0x11, 0x4f,
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| 135 |
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0x21, 0xd1, 0xf7, 0x30, 0x4a, 0xae, 0xfb, 0xd0,
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| 136 |
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0x9a, 0x78, 0xf1, 0x61, 0xe2, 0x2a, 0xde, 0x55,
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| 137 |
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0x25, 0xd4, 0xa6, 0x73, 0xd6, 0xb3, 0x96, 0x60,
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| 138 |
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0xef, 0xf0, 0x9b, 0x2b, 0x71, 0x8c, 0x74, 0x02,
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| 139 |
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0x10, 0x06, 0xac, 0x29, 0x8b, 0xdd, 0x25, 0xf9,
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| 140 |
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0xb5, 0x71, 0xbc, 0x73, 0x44, 0x0f, 0x7a, 0xa5,
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| 141 |
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0xab, 0xb4, 0x33, 0x49, 0x0b, 0x2f, 0xbd, 0x03,
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| 142 |
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0xd3, 0x62, 0x17, 0xe9, 0x73, 0xb8, 0x84, 0x48,
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| 143 |
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0x8f, 0x9c, 0x07, 0xaa, 0x52, 0x00, 0x6d, 0xa1,
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| 144 |
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0xeb, 0x2a, 0xc6, 0xa0, 0x95, 0x76, 0x37, 0x78,
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| 145 |
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0x9a, 0x81, 0x65, 0x7f, 0x46, 0x4b, 0x45, 0x5f,
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| 146 |
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0xe1, 0x6d, 0x42, 0xe8, 0x01, 0x13, 0x5c, 0x38,
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| 147 |
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0x51, 0xd4, 0xb4, 0x38, 0x49, 0x7e, 0xcb, 0x62,
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| 148 |
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0x28, 0x1e, 0x3b, 0x82, 0x93, 0x54, 0x48, 0xf1,
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| 149 |
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0xd2, 0x7d, 0xe4, 0x5a, 0xa3, 0xbc, 0x99, 0x83,
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| 150 |
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0x44, 0x4f, 0x3a, 0x77, 0x36, 0x57, 0xce, 0xcf,
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| 151 |
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0x2f, 0x56, 0xbe, 0x80, 0x90, 0x9e, 0x84, 0xea,
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| 152 |
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0x51, 0x1f, 0x8f, 0xcf, 0x90, 0xd4, 0x60, 0xdc,
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| 153 |
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0x5e, 0xb4, 0xf7, 0x10, 0x0b, 0x26, 0xe0, 0xff,
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| 154 |
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0xc4, 0xd1, 0xe5, 0x67, 0x2e, 0xe7, 0xc8, 0x93,
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| 155 |
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0x98, 0x05, 0xb8, 0xa8, 0x45, 0xc0, 0x4d, 0x09,
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| 156 |
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0xdc, 0x84, 0x16, 0x2b, 0x0d, 0x9a, 0x21, 0x53,
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| 157 |
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0x04, 0x8b, 0xd2, 0x0b, 0xbd, 0xa2, 0x4c, 0xa7,
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| 158 |
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0x60, 0xee, 0xd9, 0xe1, 0x1d, 0xd1, 0xb7, 0x4a,
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| 159 |
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0x30, 0x8f, 0x63, 0xd5, 0xa5, 0x8b, 0x33, 0x87,
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| 160 |
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0xda, 0x1a, 0x18, 0x79, 0xf3, 0xe3, 0xa6, 0x17,
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| 161 |
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0x94, 0x2e, 0xab, 0x6e, 0xa0, 0xe3, 0xcd, 0xac,
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| 162 |
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0x50, 0x8c, 0xca, 0xa7, 0x0d, 0x76, 0x37, 0xd1,
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| 163 |
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0x23, 0xe7, 0x05, 0x57, 0x8b, 0xa4, 0x22, 0x83,
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| 164 |
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0xd9, 0x62, 0x52, 0x25, 0xad, 0x07, 0xbb, 0xbf,
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| 165 |
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0xbf, 0xff, 0xbc, 0xfa, 0xee, 0x20, 0x73, 0x91,
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| 166 |
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0x29, 0xff, 0x7f, 0x02, 0x71, 0x62, 0x84, 0xb5,
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| 167 |
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0xf6, 0xb5, 0x25, 0x6b, 0x41, 0xde, 0x92, 0xb7,
|
| 168 |
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0x76, 0x3f, 0x91, 0x91, 0x31, 0x1b, 0x41, 0x84,
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| 169 |
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0x62, 0x30, 0x0a, 0x37, 0xa4, 0x5e, 0x18, 0x3a,
|
| 170 |
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0x99, 0x08, 0xa5, 0xe6, 0x6d, 0x59, 0x22, 0xec,
|
| 171 |
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0x33, 0x39, 0x86, 0x26, 0xf5, 0xab, 0x66, 0xc8,
|
| 172 |
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0x08, 0x20, 0xcf, 0x0c, 0xd7, 0x47, 0x45, 0x21,
|
| 173 |
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0x0b, 0xf6, 0x59, 0xd5, 0xfe, 0x5c, 0x8d, 0xaa,
|
| 174 |
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0x12, 0x7b, 0x6f, 0xa1, 0xf0, 0x52, 0x33, 0x4f,
|
| 175 |
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0xf5, 0xce, 0x59, 0xd3, 0xab, 0x66, 0x10, 0xbf,
|
| 176 |
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0x06, 0xc4, 0x31, 0x06, 0x73, 0xd6, 0x80, 0xa2,
|
| 177 |
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0x78, 0xc2, 0x45, 0xcb, 0x03, 0x65, 0x39, 0xc9,
|
| 178 |
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0x09, 0xd1, 0x06, 0x04, 0x33, 0x1a, 0x5a, 0xf1,
|
| 179 |
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0xde, 0x01, 0xb8, 0x71, 0x83, 0xc4, 0xb5, 0xb3,
|
| 180 |
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0xc3, 0x54, 0x65, 0x33, 0x0d, 0x5a, 0xf7, 0x9b,
|
| 181 |
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0x90, 0x7c, 0x27, 0x1f, 0x3a, 0x58, 0xa3, 0xd8,
|
| 182 |
|
|
0xfd, 0x30, 0x5f, 0xb7, 0xd2, 0x66, 0xa2, 0x93,
|
| 183 |
|
|
0x1c, 0x28, 0xb7, 0xe9, 0x1b, 0x0c, 0xe1, 0x28,
|
| 184 |
|
|
0x47, 0x26, 0xbb, 0xe9, 0x7d, 0x7e, 0xdc, 0x96,
|
| 185 |
|
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0x10, 0x92, 0x50, 0x56, 0x7c, 0x06, 0xe2, 0x27,
|
| 186 |
|
|
0xb4, 0x08, 0xd3, 0xda, 0x7b, 0x98, 0x34, 0x73,
|
| 187 |
|
|
0x9f, 0xdb, 0xf6, 0x62, 0xed, 0x31, 0x41, 0x13,
|
| 188 |
|
|
0xd3, 0xa2, 0xa8, 0x4b, 0x3a, 0xc6, 0x1d, 0xe4,
|
| 189 |
|
|
0x2f, 0x8c, 0xf8, 0xfb, 0x97, 0x64, 0xf4, 0xb6,
|
| 190 |
|
|
0x2f, 0x80, 0x5a, 0xf3, 0x56, 0xe0, 0x40, 0x50,
|
| 191 |
|
|
0xd5, 0x19, 0xd0, 0x1e, 0xfc, 0xca, 0xe5, 0xc9,
|
| 192 |
|
|
0xd4, 0x60, 0x00, 0x81, 0x2e, 0xa3, 0xcc, 0xb6,
|
| 193 |
|
|
0x52, 0xf0, 0xb4, 0xdb, 0x69, 0x99, 0xce, 0x7a,
|
| 194 |
|
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0x32, 0x4c, 0x08, 0xed, 0xaa, 0x10, 0x10, 0xe3,
|
| 195 |
|
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0x6f, 0xee, 0x99, 0x68, 0x95, 0x9f, 0x04, 0x71,
|
| 196 |
|
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0xb2, 0x49, 0x2f, 0x62, 0xa6, 0x5e, 0xb4, 0xef,
|
| 197 |
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0x02, 0xed, 0x4f, 0x27, 0xde, 0x4a, 0x0f, 0xfd,
|
| 198 |
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0xc1, 0xcc, 0xdd, 0x02, 0x8f, 0x08, 0x16, 0x54,
|
| 199 |
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0xdf, 0xda, 0xca, 0xe0, 0x82, 0xf1, 0xb4, 0x31,
|
| 200 |
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0x7a, 0xa9, 0x81, 0xfe, 0x90, 0xb7, 0x3e, 0xdb,
|
| 201 |
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0xd3, 0x35, 0xc0, 0x20, 0x80, 0x33, 0x46, 0x4a,
|
| 202 |
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0x63, 0xab, 0xd1, 0x0d, 0x29, 0xd2, 0xe2, 0x84,
|
| 203 |
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0xb8, 0xdb, 0xfa, 0xe9, 0x89, 0x44, 0x86, 0x7c,
|
| 204 |
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0xe8, 0x0b, 0xe6, 0x02, 0x6a, 0x07, 0x9b, 0x96,
|
| 205 |
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0xd0, 0xdb, 0x2e, 0x41, 0x4c, 0xa1, 0xd5, 0x57,
|
| 206 |
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0x45, 0x14, 0xfb, 0xe3, 0xa6, 0x72, 0x5b, 0x87,
|
| 207 |
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|
0x6e, 0x0c, 0x6d, 0x5b, 0xce, 0xe0, 0x2f, 0xe2,
|
| 208 |
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|
0x21, 0x81, 0x95, 0xb0, 0xe8, 0xb6, 0x32, 0x0b,
|
| 209 |
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|
0xb2, 0x98, 0x13, 0x52, 0x5d, 0xfb, 0xec, 0x63,
|
| 210 |
|
|
0x17, 0x8a, 0x9e, 0x23, 0x22, 0x36, 0xee, 0xcd,
|
| 211 |
|
|
0xda, 0xdb, 0xcf, 0x3e, 0xf1, 0xc7, 0xf1, 0x01,
|
| 212 |
|
|
0x12, 0x93, 0x0a, 0xeb, 0x6f, 0xf2, 0x02, 0x15,
|
| 213 |
|
|
0x96, 0x77, 0x5d, 0xef, 0x9c, 0xfb, 0x88, 0x91,
|
| 214 |
|
|
0x59, 0xf9, 0x84, 0xdd, 0x9b, 0x26, 0x8d, 0x80,
|
| 215 |
|
|
0xf9, 0x80, 0x66, 0x2d, 0xac, 0xf7, 0x1f, 0x06,
|
| 216 |
|
|
0xba, 0x7f, 0xff, 0xee, 0xed, 0x40, 0x5f, 0xa5,
|
| 217 |
|
|
0xd6, 0xbd, 0x8c, 0x5b, 0x46, 0xd2, 0x7e, 0x48,
|
| 218 |
|
|
0x4a, 0x65, 0x8f, 0x08, 0x42, 0x60, 0xf7, 0x0f,
|
| 219 |
|
|
0xb9, 0x16, 0x0b, 0x0c, 0x1a, 0x06, 0x00, 0x00,
|
| 220 |
|
|
},
|
| 221 |
|
|
nil,
|
| 222 |
|
|
},
|
| 223 |
|
|
{ // has 1 non-empty fixed huffman block then garbage
|
| 224 |
|
|
"hello.txt",
|
| 225 |
|
|
"hello.txt + garbage",
|
| 226 |
|
|
"hello world\n",
|
| 227 |
|
|
[]byte{
|
| 228 |
|
|
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
| 229 |
|
|
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
| 230 |
|
|
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
| 231 |
|
|
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
| 232 |
|
|
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
|
| 233 |
|
|
0x00, 0x00, 'g', 'a', 'r', 'b', 'a', 'g', 'e', '!', '!', '!',
|
| 234 |
|
|
},
|
| 235 |
|
|
ErrHeader,
|
| 236 |
|
|
},
|
| 237 |
|
|
{ // has 1 non-empty fixed huffman block not enough header
|
| 238 |
|
|
"hello.txt",
|
| 239 |
|
|
"hello.txt + garbage",
|
| 240 |
|
|
"hello world\n",
|
| 241 |
|
|
[]byte{
|
| 242 |
|
|
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
| 243 |
|
|
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
| 244 |
|
|
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
| 245 |
|
|
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
| 246 |
|
|
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
|
| 247 |
|
|
0x00, 0x00, gzipID1,
|
| 248 |
|
|
},
|
| 249 |
|
|
io.ErrUnexpectedEOF,
|
| 250 |
|
|
},
|
| 251 |
|
|
{ // has 1 non-empty fixed huffman block but corrupt checksum
|
| 252 |
|
|
"hello.txt",
|
| 253 |
|
|
"hello.txt + corrupt checksum",
|
| 254 |
|
|
"hello world\n",
|
| 255 |
|
|
[]byte{
|
| 256 |
|
|
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
| 257 |
|
|
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
| 258 |
|
|
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
| 259 |
|
|
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
| 260 |
|
|
0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0x0c, 0x00,
|
| 261 |
|
|
0x00, 0x00,
|
| 262 |
|
|
},
|
| 263 |
|
|
ErrChecksum,
|
| 264 |
|
|
},
|
| 265 |
|
|
{ // has 1 non-empty fixed huffman block but corrupt size
|
| 266 |
|
|
"hello.txt",
|
| 267 |
|
|
"hello.txt + corrupt size",
|
| 268 |
|
|
"hello world\n",
|
| 269 |
|
|
[]byte{
|
| 270 |
|
|
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
| 271 |
|
|
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
| 272 |
|
|
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
| 273 |
|
|
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
| 274 |
|
|
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0xff, 0x00,
|
| 275 |
|
|
0x00, 0x00,
|
| 276 |
|
|
},
|
| 277 |
|
|
ErrChecksum,
|
| 278 |
|
|
},
|
| 279 |
|
|
}
|
| 280 |
|
|
|
| 281 |
|
|
func TestDecompressor(t *testing.T) {
|
| 282 |
|
|
b := new(bytes.Buffer)
|
| 283 |
|
|
for _, tt := range gunzipTests {
|
| 284 |
|
|
in := bytes.NewBuffer(tt.gzip)
|
| 285 |
|
|
gzip, err := NewReader(in)
|
| 286 |
|
|
if err != nil {
|
| 287 |
|
|
t.Errorf("%s: NewReader: %s", tt.name, err)
|
| 288 |
|
|
continue
|
| 289 |
|
|
}
|
| 290 |
|
|
defer gzip.Close()
|
| 291 |
|
|
if tt.name != gzip.Name {
|
| 292 |
|
|
t.Errorf("%s: got name %s", tt.name, gzip.Name)
|
| 293 |
|
|
}
|
| 294 |
|
|
b.Reset()
|
| 295 |
|
|
n, err := io.Copy(b, gzip)
|
| 296 |
|
|
if err != tt.err {
|
| 297 |
|
|
t.Errorf("%s: io.Copy: %v want %v", tt.name, err, tt.err)
|
| 298 |
|
|
}
|
| 299 |
|
|
s := b.String()
|
| 300 |
|
|
if s != tt.raw {
|
| 301 |
|
|
t.Errorf("%s: got %d-byte %q want %d-byte %q", tt.name, n, s, len(tt.raw), tt.raw)
|
| 302 |
|
|
}
|
| 303 |
|
|
}
|
| 304 |
|
|
}
|
