forked from mirrors/gecko-dev
106d999025
MozReview-Commit-ID: 786dBxzN3Uc --HG-- extra : rebase_source : bcd8bfa32c5d93f4559bda985521c3805b43c6b6
105 lines
2.6 KiB
JavaScript
105 lines
2.6 KiB
JavaScript
"use strict";
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do_print("starting tests");
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Components.utils.import("resource://gre/modules/osfile.jsm");
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/**
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* A test to check that the |append| mode flag is correctly implemented.
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* (see bug 925865)
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*/
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function setup_mode(mode) {
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// Complete mode.
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let realMode = {
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read: true,
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write: true
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};
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for (let k in mode) {
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realMode[k] = mode[k];
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}
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return realMode;
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}
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// Test append mode.
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async function test_append(mode) {
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let path = OS.Path.join(OS.Constants.Path.tmpDir,
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"test_osfile_async_append.tmp");
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// Clear any left-over files from previous runs.
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await removeTestFile(path)
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try {
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mode = setup_mode(mode);
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mode.append = true;
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if (mode.trunc) {
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// Pre-fill file with some data to see if |trunc| actually works.
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await OS.File.writeAtomic(path, new Uint8Array(500));
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}
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let file = await OS.File.open(path, mode);
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try {
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await file.write(new Uint8Array(1000));
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await file.setPosition(0, OS.File.POS_START);
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await file.read(100);
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// Should be at offset 100, length 1000 now.
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await file.write(new Uint8Array(100));
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// Should be at offset 1100, length 1100 now.
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let stat = await file.stat();
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do_check_eq(1100, stat.size);
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} finally {
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await file.close();
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}
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} catch (ex) {
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await removeTestFile(path)
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}
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}
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// Test no-append mode.
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async function test_no_append(mode) {
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let path = OS.Path.join(OS.Constants.Path.tmpDir,
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"test_osfile_async_noappend.tmp");
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// Clear any left-over files from previous runs.
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await removeTestFile(path)
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try {
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mode = setup_mode(mode);
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mode.append = false;
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if (mode.trunc) {
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// Pre-fill file with some data to see if |trunc| actually works.
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await OS.File.writeAtomic(path, new Uint8Array(500));
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}
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let file = await OS.File.open(path, mode);
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try {
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await file.write(new Uint8Array(1000));
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await file.setPosition(0, OS.File.POS_START);
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await file.read(100);
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// Should be at offset 100, length 1000 now.
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await file.write(new Uint8Array(100));
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// Should be at offset 200, length 1000 now.
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let stat = await file.stat();
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do_check_eq(1000, stat.size);
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} finally {
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await file.close();
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}
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} finally {
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await removeTestFile(path)
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}
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}
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var test_flags = [
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{},
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{create: true},
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{trunc: true}
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];
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function run_test() {
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do_test_pending();
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for (let t of test_flags) {
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add_task(test_append.bind(null, t));
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add_task(test_no_append.bind(null, t));
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}
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add_task(do_test_finished);
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run_next_test();
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}
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