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comparison: toolkit/components/osfile/tests/xpcshell/test_osfile_async_append.js
toolkit/components/osfile/tests/xpcshell/test_osfile_async_append.js
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- 6474c204b198
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| -1:000000000000 | 0:1b2551fc6253 |
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| 1 "use strict"; | |
| 2 | |
| 3 do_print("starting tests"); | |
| 4 | |
| 5 Components.utils.import("resource://gre/modules/osfile.jsm"); | |
| 6 Components.utils.import("resource://gre/modules/Task.jsm"); | |
| 7 | |
| 8 /** | |
| 9 * A test to check that the |append| mode flag is correctly implemented. | |
| 10 * (see bug 925865) | |
| 11 */ | |
| 12 | |
| 13 function setup_mode(mode) { | |
| 14 // Complete mode. | |
| 15 let realMode = { | |
| 16 read: true, | |
| 17 write: true | |
| 18 }; | |
| 19 for (let k in mode) { | |
| 20 realMode[k] = mode[k]; | |
| 21 } | |
| 22 return realMode; | |
| 23 } | |
| 24 | |
| 25 // Test append mode. | |
| 26 function test_append(mode) { | |
| 27 let path = OS.Path.join(OS.Constants.Path.tmpDir, | |
| 28 "test_osfile_async_append.tmp"); | |
| 29 | |
| 30 // Clear any left-over files from previous runs. | |
| 31 try { | |
| 32 yield OS.File.remove(path); | |
| 33 } catch (ex if ex.becauseNoSuchFile) { | |
| 34 // ignore | |
| 35 } | |
| 36 | |
| 37 try { | |
| 38 mode = setup_mode(mode); | |
| 39 mode.append = true; | |
| 40 if (mode.trunc) { | |
| 41 // Pre-fill file with some data to see if |trunc| actually works. | |
| 42 yield OS.File.writeAtomic(path, new Uint8Array(500)); | |
| 43 } | |
| 44 let file = yield OS.File.open(path, mode); | |
| 45 try { | |
| 46 yield file.write(new Uint8Array(1000)); | |
| 47 yield file.setPosition(0, OS.File.POS_START); | |
| 48 yield file.read(100); | |
| 49 // Should be at offset 100, length 1000 now. | |
| 50 yield file.write(new Uint8Array(100)); | |
| 51 // Should be at offset 1100, length 1100 now. | |
| 52 let stat = yield file.stat(); | |
| 53 do_check_eq(1100, stat.size); | |
| 54 } finally { | |
| 55 yield file.close(); | |
| 56 } | |
| 57 } catch(ex) { | |
| 58 try { | |
| 59 yield OS.File.remove(path); | |
| 60 } catch (ex if ex.becauseNoSuchFile) { | |
| 61 // ignore. | |
| 62 } | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 // Test no-append mode. | |
| 67 function test_no_append(mode) { | |
| 68 let path = OS.Path.join(OS.Constants.Path.tmpDir, | |
| 69 "test_osfile_async_noappend.tmp"); | |
| 70 | |
| 71 // Clear any left-over files from previous runs. | |
| 72 try { | |
| 73 yield OS.File.remove(path); | |
| 74 } catch (ex if ex.becauseNoSuchFile) { | |
| 75 // ignore | |
| 76 } | |
| 77 | |
| 78 try { | |
| 79 mode = setup_mode(mode); | |
| 80 mode.append = false; | |
| 81 if (mode.trunc) { | |
| 82 // Pre-fill file with some data to see if |trunc| actually works. | |
| 83 yield OS.File.writeAtomic(path, new Uint8Array(500)); | |
| 84 } | |
| 85 let file = yield OS.File.open(path, mode); | |
| 86 try { | |
| 87 yield file.write(new Uint8Array(1000)); | |
| 88 yield file.setPosition(0, OS.File.POS_START); | |
| 89 yield file.read(100); | |
| 90 // Should be at offset 100, length 1000 now. | |
| 91 yield file.write(new Uint8Array(100)); | |
| 92 // Should be at offset 200, length 1000 now. | |
| 93 let stat = yield file.stat(); | |
| 94 do_check_eq(1000, stat.size); | |
| 95 } finally { | |
| 96 yield file.close(); | |
| 97 } | |
| 98 } finally { | |
| 99 try { | |
| 100 yield OS.File.remove(path); | |
| 101 } catch (ex if ex.becauseNoSuchFile) { | |
| 102 // ignore. | |
| 103 } | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 let test_flags = [ | |
| 108 {}, | |
| 109 {create:true}, | |
| 110 {trunc:true} | |
| 111 ]; | |
| 112 function run_test() { | |
| 113 do_test_pending(); | |
| 114 | |
| 115 for (let t of test_flags) { | |
| 116 add_task(test_append.bind(null, t)); | |
| 117 add_task(test_no_append.bind(null, t)); | |
| 118 } | |
| 119 add_task(do_test_finished); | |
| 120 | |
| 121 run_next_test(); | |
| 122 } |
