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'use strict';
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'foo_string.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const rs = recordingReadableStream({
start(controller) {
controller.enqueue('foo_string');
controller.close();
}
});
await rs.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'foo_string');
assert_equals(await getFileSize(handle), 10);
}, 'can be piped to with a string');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'foo_arraybuf.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const buf = new ArrayBuffer(3);
const intView = new Uint8Array(buf);
intView[0] = 0x66;
intView[1] = 0x6f;
intView[2] = 0x6f;
const rs = recordingReadableStream({
start(controller) {
controller.enqueue(buf);
controller.close();
}
});
await rs.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'foo');
assert_equals(await getFileSize(handle), 3);
}, 'can be piped to with an ArrayBuffer');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'foo_blob.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const rs = recordingReadableStream({
start(controller) {
controller.enqueue(new Blob(['foo']));
controller.close();
}
});
await rs.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'foo');
assert_equals(await getFileSize(handle), 3);
}, 'can be piped to with a Blob');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'foo_write_param.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const rs = recordingReadableStream({
start(controller) {
controller.enqueue({type: 'write', data: 'foobar'});
controller.close();
}
});
await rs.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'foobar');
assert_equals(await getFileSize(handle), 6);
}, 'can be piped to with a param object with write command');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'foo_write_param.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const rs = recordingReadableStream({
start(controller) {
controller.enqueue({type: 'write', data: 'foobar'});
controller.enqueue({type: 'truncate', size: 10});
controller.enqueue({type: 'write', position: 0, data: 'baz'});
controller.close();
}
});
await rs.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'bazbar\0\0\0\0');
assert_equals(await getFileSize(handle), 10);
}, 'can be piped to with a param object with multiple commands');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'foo_write_queued.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const rs = recordingReadableStream({
start(controller) {
controller.enqueue('foo');
controller.enqueue('bar');
controller.enqueue('baz');
controller.close();
}
});
await rs.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'foobarbaz');
assert_equals(await getFileSize(handle), 9);
}, 'multiple operations can be queued');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'fetched.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const response = await fetch('data:text/plain,fetched from far');
const body = await response.body;
await body.pipeTo(wfs, { preventCancel: true });
assert_equals(await getFileContents(handle), 'fetched from far');
assert_equals(await getFileSize(handle), 16);
}, 'plays well with fetch');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'aborted should_be_empty.txt', root);
const wfs = await cleanup_writable(t, await handle.createWritable());
const response = await fetch('data:text/plain,fetched from far');
const body = await response.body;
const abortController = new AbortController();
const signal = abortController.signal;
const promise = body.pipeTo(wfs, { signal });
await abortController.abort();
await promise_rejects_dom(t, 'AbortError', promise, 'stream is aborted');
await promise_rejects_js(t, TypeError, wfs.close(), 'stream cannot be closed to flush writes');
assert_equals(await getFileContents(handle), '');
assert_equals(await getFileSize(handle), 0);
}, 'abort() aborts write');
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