The Tor Browser / file comparison
comparison: xpcom/tests/unit/test_storagestream.js
xpcom/tests/unit/test_storagestream.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
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| -1:000000000000 | 0:52af018ea806 |
|---|---|
| 1 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 const Cc = Components.classes; | |
| 8 const Ci = Components.interfaces; | |
| 9 const Cr = Components.results; | |
| 10 | |
| 11 function run_test() | |
| 12 { | |
| 13 test1(); | |
| 14 test2(); | |
| 15 test3(); | |
| 16 test4(); | |
| 17 } | |
| 18 | |
| 19 /** | |
| 20 * Checks that getting an input stream from a storage stream which has never had | |
| 21 * anything written to it throws a not-initialized exception. | |
| 22 */ | |
| 23 function test1() | |
| 24 { | |
| 25 var ss = Cc["@mozilla.org/storagestream;1"] | |
| 26 .createInstance(Ci.nsIStorageStream); | |
| 27 ss.init(1024, 1024, null); | |
| 28 | |
| 29 var out = ss.getOutputStream(0); | |
| 30 var inp2 = ss.newInputStream(0); | |
| 31 do_check_eq(inp2.available(), 0); | |
| 32 do_check_true(inp2.isNonBlocking()); | |
| 33 | |
| 34 var sis = | |
| 35 Cc["@mozilla.org/scriptableinputstream;1"] | |
| 36 .createInstance(Ci.nsIScriptableInputStream); | |
| 37 sis.init(inp2); | |
| 38 | |
| 39 var threw = false; | |
| 40 try { | |
| 41 sis.read(1); | |
| 42 } catch (ex if ex.result == Cr.NS_BASE_STREAM_WOULD_BLOCK) { | |
| 43 threw = true; | |
| 44 } | |
| 45 do_check_true(threw); | |
| 46 } | |
| 47 | |
| 48 /** | |
| 49 * Checks that getting an input stream from a storage stream to which 0 bytes of | |
| 50 * data have been explicitly written doesn't throw an exception. | |
| 51 */ | |
| 52 function test2() | |
| 53 { | |
| 54 var ss = Cc["@mozilla.org/storagestream;1"] | |
| 55 .createInstance(Ci.nsIStorageStream); | |
| 56 ss.init(1024, 1024, null); | |
| 57 | |
| 58 var out = ss.getOutputStream(0); | |
| 59 out.write("", 0); | |
| 60 try | |
| 61 { | |
| 62 var inp2 = ss.newInputStream(0); | |
| 63 } | |
| 64 catch (e) | |
| 65 { | |
| 66 do_throw("shouldn't throw exception when new input stream created"); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 /** | |
| 71 * Checks that reading any non-zero amount of data from a storage stream | |
| 72 * which has had 0 bytes written to it explicitly works correctly. | |
| 73 */ | |
| 74 function test3() | |
| 75 { | |
| 76 var ss = Cc["@mozilla.org/storagestream;1"] | |
| 77 .createInstance(Ci.nsIStorageStream); | |
| 78 ss.init(1024, 1024, null); | |
| 79 | |
| 80 var out = ss.getOutputStream(0); | |
| 81 out.write("", 0); | |
| 82 try | |
| 83 { | |
| 84 var inp = ss.newInputStream(0); | |
| 85 } | |
| 86 catch (e) | |
| 87 { | |
| 88 do_throw("newInputStream(0) shouldn't throw if write() is called: " + e); | |
| 89 } | |
| 90 | |
| 91 do_check_true(inp.isNonBlocking(), "next test expects a non-blocking stream"); | |
| 92 | |
| 93 try | |
| 94 { | |
| 95 var threw = false; | |
| 96 var bis = BIS(inp); | |
| 97 var dummy = bis.readByteArray(5); | |
| 98 } | |
| 99 catch (e) | |
| 100 { | |
| 101 if (e.result != Cr.NS_BASE_STREAM_WOULD_BLOCK) | |
| 102 do_throw("wrong error thrown: " + e); | |
| 103 threw = true; | |
| 104 } | |
| 105 do_check_true(threw, | |
| 106 "should have thrown (nsStorageInputStream is nonblocking)"); | |
| 107 } | |
| 108 | |
| 109 /** | |
| 110 * Basic functionality test for storagestream: write data to it, get an input | |
| 111 * stream, and read the data back to see that it matches. | |
| 112 */ | |
| 113 function test4() | |
| 114 { | |
| 115 var bytes = [65, 66, 67, 68, 69, 70, 71, 72, 73, 74]; | |
| 116 | |
| 117 var ss = Cc["@mozilla.org/storagestream;1"] | |
| 118 .createInstance(Ci.nsIStorageStream); | |
| 119 ss.init(1024, 1024, null); | |
| 120 | |
| 121 var outStream = ss.getOutputStream(0); | |
| 122 | |
| 123 var bos = Cc["@mozilla.org/binaryoutputstream;1"] | |
| 124 .createInstance(Ci.nsIBinaryOutputStream); | |
| 125 bos.setOutputStream(outStream); | |
| 126 | |
| 127 bos.writeByteArray(bytes, bytes.length); | |
| 128 bos.close(); | |
| 129 | |
| 130 var inp = ss.newInputStream(0); | |
| 131 var bis = BIS(inp); | |
| 132 | |
| 133 var count = 0; | |
| 134 while (count < bytes.length) | |
| 135 { | |
| 136 var data = bis.read8(1); | |
| 137 do_check_eq(data, bytes[count++]); | |
| 138 } | |
| 139 | |
| 140 var threw = false; | |
| 141 try | |
| 142 { | |
| 143 data = bis.read8(1); | |
| 144 } | |
| 145 catch (e) | |
| 146 { | |
| 147 if (e.result != Cr.NS_ERROR_FAILURE) | |
| 148 do_throw("wrong error thrown: " + e); | |
| 149 threw = true; | |
| 150 } | |
| 151 if (!threw) | |
| 152 do_throw("should have thrown but instead returned: '" + data + "'"); | |
| 153 } | |
| 154 | |
| 155 | |
| 156 function BIS(input) | |
| 157 { | |
| 158 var bis = Cc["@mozilla.org/binaryinputstream;1"] | |
| 159 .createInstance(Ci.nsIBinaryInputStream); | |
| 160 bis.setInputStream(input); | |
| 161 return bis; | |
| 162 } |
