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// META: global=worker
'use strict';
// The browser is assumed to use the same implementation as for TextDecoder, so
// this file don't replicate the exhaustive checks it has. It is just a smoke
// test that non-UTF-8 encodings work at all.
const encodings = [
{
name: 'UTF-16BE',
value: [108, 52],
expected: "\u{6c34}",
invalid: [0xD8, 0x00]
},
{
name: 'UTF-16LE',
value: [52, 108],
expected: "\u{6c34}",
invalid: [0x00, 0xD8]
},
{
name: 'Shift_JIS',
value: [144, 133],
expected: "\u{6c34}",
invalid: [255]
},
{
name: 'ISO-8859-14',
value: [100, 240, 114],
expected: "d\u{0175}r",
invalid: undefined // all bytes are treated as valid
}
];
for (const encoding of encodings) {
promise_test(async () => {
const stream = new TextDecoderStream(encoding.name);
const reader = stream.readable.getReader();
const writer = stream.writable.getWriter();
const writePromise = writer.write(new Uint8Array(encoding.value));
const {value, done} = await reader.read();
assert_false(done, 'readable should not be closed');
assert_equals(value, encoding.expected, 'chunk should match expected');
await writePromise;
}, `TextDecoderStream should be able to decode ${encoding.name}`);
if (!encoding.invalid)
continue;
promise_test(async t => {
const stream = new TextDecoderStream(encoding.name);
const reader = stream.readable.getReader();
const writer = stream.writable.getWriter();
const writePromise = writer.write(new Uint8Array(encoding.invalid));
const closePromise = writer.close();
const {value, done} = await reader.read();
assert_false(done, 'readable should not be closed');
assert_equals(value, '\u{FFFD}', 'output should be replacement character');
await Promise.all([writePromise, closePromise]);
}, `TextDecoderStream should be able to decode invalid sequences in ` +
`${encoding.name}`);
promise_test(async t => {
const stream = new TextDecoderStream(encoding.name, {fatal: true});
const reader = stream.readable.getReader();
const writer = stream.writable.getWriter();
const writePromise = writer.write(new Uint8Array(encoding.invalid));
const closePromise = writer.close();
await promise_rejects(t, new TypeError(), reader.read(),
'readable should be errored');
await promise_rejects(t, new TypeError(),
Promise.all([writePromise, closePromise]),
'writable should be errored');
}, `TextDecoderStream should be able to reject invalid sequences in ` +
`${encoding.name}`);
}