зеркало из https://github.com/mozilla/gecko-dev.git
40 строки
1.1 KiB
JavaScript
40 строки
1.1 KiB
JavaScript
"use strict";
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Components.utils.import("resource://gre/modules/osfile.jsm");
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Components.utils.import("resource://gre/modules/Task.jsm");
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function run_test() {
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do_test_pending();
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run_next_test();
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}
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/**
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* Test to ensure that {bytes:} in options to |write| is correctly
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* preserved.
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*/
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add_task(function* test_bytes() {
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let path = OS.Path.join(OS.Constants.Path.tmpDir,
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"test_osfile_async_bytes.tmp");
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let file = yield OS.File.open(path, {trunc: true, read: true, write: true});
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try {
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try {
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// 1. Test write, by supplying {bytes:} options smaller than the actual
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// buffer.
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yield file.write(new Uint8Array(2048), {bytes: 1024});
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do_check_eq((yield file.stat()).size, 1024);
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// 2. Test that passing nullish values for |options| still works.
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yield file.setPosition(0, OS.File.POS_END);
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yield file.write(new Uint8Array(1024), null);
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yield file.write(new Uint8Array(1024), undefined);
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do_check_eq((yield file.stat()).size, 3072);
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} finally {
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yield file.close();
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}
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} finally {
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yield OS.File.remove(path);
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}
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});
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add_task(do_test_finished);
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