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96 lines
3.3 KiB
JavaScript
96 lines
3.3 KiB
JavaScript
// META: script=resources/test-helpers.js
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promise_test(async t => cleanupSandboxedFileSystem(),
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'Cleanup to setup test environment');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'empty_blob');
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const writer = await handle.createWriter();
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await writer.write(0, new Blob([]));
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assert_equals(await getFileContents(handle), '');
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assert_equals(await getFileSize(handle), 0);
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}, 'write() with an empty blob to an empty file');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'valid_blob');
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const writer = await handle.createWriter();
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await writer.write(0, new Blob(['1234567890']));
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assert_equals(await getFileContents(handle), '1234567890');
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assert_equals(await getFileSize(handle), 10);
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}, 'write() a blob to an empty file');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'blob_with_offset');
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const writer = await handle.createWriter();
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await writer.write(0, new Blob(['1234567890']));
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await writer.write(4, new Blob(['abc']));
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assert_equals(await getFileContents(handle), '1234abc890');
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assert_equals(await getFileSize(handle), 10);
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}, 'write() called with a blob and a valid offset');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'bad_offset');
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const writer = await handle.createWriter();
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await promise_rejects(t, 'InvalidStateError', writer.write(4, new Blob(['abc'])));
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assert_equals(await getFileContents(handle), '');
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assert_equals(await getFileSize(handle), 0);
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}, 'write() called with an invalid offset');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'trunc_shrink');
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const writer = await handle.createWriter();
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await writer.write(0, new Blob(['1234567890']));
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await writer.truncate(5);
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assert_equals(await getFileContents(handle), '12345');
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assert_equals(await getFileSize(handle), 5);
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}, 'truncate() to shrink a file');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'trunc_grow');
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const writer = await handle.createWriter();
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await writer.write(0, new Blob(['abc']));
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await writer.truncate(5);
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assert_equals(await getFileContents(handle), 'abc\0\0');
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assert_equals(await getFileSize(handle), 5);
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}, 'truncate() to grow a file');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'write_stream');
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const writer = await handle.createWriter();
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const stream = new Response('1234567890').body;
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await writer.write(0, stream);
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assert_equals(await getFileContents(handle), '1234567890');
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assert_equals(await getFileSize(handle), 10);
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}, 'write() called with a ReadableStream');
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promise_test(async t => {
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const handle = await createEmptyFile(t, 'write_stream');
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const handle_writer = await handle.createWriter();
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const { writable, readable } = new TransformStream();
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const write_result = handle_writer.write(0, readable);
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const stream_writer = writable.getWriter();
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stream_writer.write(new Uint8Array([0x73, 0x74, 0x72, 0x65, 0x61, 0x6D, 0x73, 0x21]));
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garbageCollect();
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stream_writer.write(new Uint8Array([0x21, 0x21]));
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stream_writer.close();
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await write_result;
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assert_equals(await getFileContents(handle), 'streams!!!');
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assert_equals(await getFileSize(handle), 10);
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}, 'Using a WritableStream writer to write');
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