mozilla-central/testing/web-platform/tests/encoding/streams/encode-bad-chunks.any.js (file symbol)

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// META: global=window,worker
// META: script=resources/readable-stream-from-array.js
// META: script=resources/readable-stream-to-array.js
'use strict';
const error1 = new Error('error1');
error1.name = 'error1';
promise_test(t => {
const ts = new TextEncoderStream();
const writer = ts.writable.getWriter();
const reader = ts.readable.getReader();
const writePromise = writer.write({
toString() { throw error1; }
});
const readPromise = reader.read();
return Promise.all([
promise_rejects_exactly(t, error1, readPromise, 'read should reject with error1'),
promise_rejects_exactly(t, error1, writePromise, 'write should reject with error1'),
promise_rejects_exactly(t, error1, reader.closed, 'readable should be errored with error1'),
promise_rejects_exactly(t, error1, writer.closed, 'writable should be errored with error1'),
]);
}, 'a chunk that cannot be converted to a string should error the streams');
const oddInputs = [
{
name: 'undefined',
value: undefined,
expected: 'undefined'
},
{
name: 'null',
value: null,
expected: 'null'
},
{
name: 'numeric',
value: 3.14,
expected: '3.14'
},
{
name: 'object',
value: {},
expected: '[object Object]'
},
{
name: 'array',
value: ['hi'],
expected: 'hi'
}
];
for (const input of oddInputs) {
promise_test(async () => {
const outputReadable = readableStreamFromArray([input.value])
.pipeThrough(new TextEncoderStream())
.pipeThrough(new TextDecoderStream());
const output = await readableStreamToArray(outputReadable);
assert_equals(output.length, 1, 'output should contain one chunk');
assert_equals(output[0], input.expected, 'output should be correct');
}, `input of type ${input.name} should be converted correctly to string`);
}