| // META: global=window,worker |
| // META: script=resources/readable-stream-from-array.js |
| // META: script=resources/readable-stream-to-array.js |
| // META: script=/common/sab.js |
| 'use strict'; |
| |
| ["ArrayBuffer", "SharedArrayBuffer"].forEach((arrayBufferOrSharedArrayBuffer) => { |
| const inputChunkData = [73, 32, 240, 159, 146, 153, 32, 115, 116, 114, 101, 97, 109, 115]; |
| |
| const emptyChunk = new Uint8Array(createBuffer(arrayBufferOrSharedArrayBuffer, 0)); |
| const inputChunk = new Uint8Array(createBuffer(arrayBufferOrSharedArrayBuffer, inputChunkData.length)); |
| |
| inputChunk.set(inputChunkData); |
| |
| const expectedOutputString = 'I \u{1F499} streams'; |
| |
| promise_test(async () => { |
| const input = readableStreamFromArray([inputChunk]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, [expectedOutputString], |
| 'the output should be in one chunk'); |
| }, 'decoding one UTF-8 chunk should give one output string - ' + arrayBufferOrSharedArrayBuffer); |
| |
| promise_test(async () => { |
| const input = readableStreamFromArray([emptyChunk]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, [], 'no chunks should be output'); |
| }, 'decoding an empty chunk should give no output chunks - ' + arrayBufferOrSharedArrayBuffer); |
| |
| promise_test(async () => { |
| const input = readableStreamFromArray([emptyChunk, inputChunk]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, [expectedOutputString], |
| 'the output should be in one chunk'); |
| }, 'an initial empty chunk should be ignored - ' + arrayBufferOrSharedArrayBuffer); |
| |
| promise_test(async () => { |
| const input = readableStreamFromArray([inputChunk, emptyChunk]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, [expectedOutputString], |
| 'the output should be in one chunk'); |
| }, 'a trailing empty chunk should be ignored - ' + arrayBufferOrSharedArrayBuffer); |
| |
| promise_test(async () => { |
| const chunk = new Uint8Array(createBuffer(arrayBufferOrSharedArrayBuffer, 3)); |
| chunk.set([0xF0, 0x9F, 0x92]); |
| const input = readableStreamFromArray([chunk]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, ['\uFFFD']); |
| }, 'UTF-8 EOF handling - ' + arrayBufferOrSharedArrayBuffer); |
| }); |
| |
| promise_test(async () => { |
| const buffer = new ArrayBuffer(3); |
| const view = new Uint8Array(buffer, 1, 1); |
| view[0] = 65; |
| new MessageChannel().port1.postMessage(buffer, [buffer]); |
| const input = readableStreamFromArray([view]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, [], 'no chunks should be output'); |
| }, 'decoding a transferred Uint8Array chunk should give no output'); |
| |
| promise_test(async () => { |
| const buffer = new ArrayBuffer(1); |
| new MessageChannel().port1.postMessage(buffer, [buffer]); |
| const input = readableStreamFromArray([buffer]); |
| const output = input.pipeThrough(new TextDecoderStream()); |
| const array = await readableStreamToArray(output); |
| assert_array_equals(array, [], 'no chunks should be output'); |
| }, 'decoding a transferred ArrayBuffer chunk should give no output'); |