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comparison: modules/libjar/zipwriter/test/unit/test_alignment.js
modules/libjar/zipwriter/test/unit/test_alignment.js
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| -1:000000000000 | 0:973533a7821e |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 */ | |
| 5 | |
| 6 const DATA = "ZIP WRITER TEST DATA"; | |
| 7 const FILENAME = "test_data.txt"; | |
| 8 const CRC = 0xe6164331; | |
| 9 const time = 1199145600000; // Jan 1st 2008 | |
| 10 | |
| 11 var TESTS = [ | |
| 12 { | |
| 13 name: "test.txt", | |
| 14 compression: Ci.nsIZipWriter.COMPRESSION_DEFAULT | |
| 15 }, | |
| 16 { | |
| 17 name: "test.png", | |
| 18 compression: Ci.nsIZipWriter.COMPRESSION_NONE | |
| 19 } | |
| 20 ]; | |
| 21 | |
| 22 function swap16(n) | |
| 23 { | |
| 24 return (((n >> 8) & 0xFF) << 0) | | |
| 25 (((n >> 0) & 0xFF) << 8); | |
| 26 } | |
| 27 | |
| 28 function swap32(n) | |
| 29 { | |
| 30 return (((n >> 24) & 0xFF) << 0) | | |
| 31 (((n >> 16) & 0xFF) << 8) | | |
| 32 (((n >> 8) & 0xFF) << 16) | | |
| 33 (((n >> 0) & 0xFF) << 24); | |
| 34 } | |
| 35 | |
| 36 function move_to_data(bis, offset) | |
| 37 { | |
| 38 bis.readBytes(18); // Move to compressed size | |
| 39 var size = swap32(bis.read32()); | |
| 40 bis.readBytes(4); | |
| 41 var file_len = swap16(bis.read16()); | |
| 42 var extra_len = swap16(bis.read16()); | |
| 43 var file = bis.readBytes(file_len); | |
| 44 bis.readBytes(extra_len); | |
| 45 offset += ZIP_FILE_HEADER_SIZE + file_len + extra_len; | |
| 46 | |
| 47 return {offset: offset, size: size}; | |
| 48 } | |
| 49 | |
| 50 function test_alignment(align_size) | |
| 51 { | |
| 52 // Create zip for testing. | |
| 53 zipW.open(tmpFile, PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE); | |
| 54 for (var i = 0; i < TESTS.length; i++) { | |
| 55 var source = do_get_file(DATA_DIR + TESTS[i].name); | |
| 56 zipW.addEntryFile(TESTS[i].name, TESTS[i].compression, source, false); | |
| 57 } | |
| 58 var stream = Cc["@mozilla.org/io/string-input-stream;1"] | |
| 59 .createInstance(Ci.nsIStringInputStream); | |
| 60 stream.setData(DATA, DATA.length); | |
| 61 zipW.addEntryStream(FILENAME, time * PR_USEC_PER_MSEC, | |
| 62 Ci.nsIZipWriter.COMPRESSION_NONE, stream, false); | |
| 63 zipW.alignStoredFiles(align_size); | |
| 64 zipW.close(); | |
| 65 | |
| 66 // Check data can be decompressed. | |
| 67 var zipR = new ZipReader(tmpFile); | |
| 68 var stream = Cc["@mozilla.org/scriptableinputstream;1"] | |
| 69 .createInstance(Ci.nsIScriptableInputStream); | |
| 70 stream.init(zipR.getInputStream(FILENAME)); | |
| 71 var result = stream.read(DATA.length); | |
| 72 do_check_eq(result, DATA); | |
| 73 stream.close(); | |
| 74 zipR.close(); | |
| 75 | |
| 76 // Check data is correct and aligned. | |
| 77 var fis = Cc["@mozilla.org/network/file-input-stream;1"] | |
| 78 .createInstance(Ci.nsIFileInputStream); | |
| 79 fis.init(tmpFile, -1, -1, null); | |
| 80 let bis = Cc["@mozilla.org/binaryinputstream;1"] | |
| 81 .createInstance(Ci.nsIBinaryInputStream); | |
| 82 bis.setInputStream(fis); | |
| 83 var offset = 0; | |
| 84 | |
| 85 var ret = move_to_data(bis, offset); // "test.txt" | |
| 86 offset = ret.offset; | |
| 87 bis.readBytes(ret.size); | |
| 88 offset += ret.size; | |
| 89 | |
| 90 ret = move_to_data(bis, offset); // "test.png" | |
| 91 offset = ret.offset; | |
| 92 do_check_eq(offset % align_size, 0); | |
| 93 bis.readBytes(ret.size); | |
| 94 offset += ret.size; | |
| 95 | |
| 96 ret = move_to_data(bis, offset); // "test_data.txt" | |
| 97 offset = ret.offset; | |
| 98 var result = bis.readBytes(DATA.length); | |
| 99 do_check_eq(result, DATA); | |
| 100 do_check_eq(offset % align_size, 0); | |
| 101 | |
| 102 fis.close(); | |
| 103 bis.close(); | |
| 104 } | |
| 105 | |
| 106 function run_test() | |
| 107 { | |
| 108 test_alignment(2); | |
| 109 test_alignment(4); | |
| 110 test_alignment(16); | |
| 111 test_alignment(4096); | |
| 112 test_alignment(32768); | |
| 113 } |
