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