forked from mirrors/gecko-dev
7120c26ac8
Automatic update from web-platform-tests FileAPI: Add more WPT for Blob read methods. This change adds 3 new tests: 1. Make sure that garbage collection of the Blob will not break consumption of it's readable stream. 2. Make sure that concurrent reads via the text() method work. 3. Make sure that concurrent reads via the arrayBuffer() method work. Bug: 945893 Change-Id: Ie1fb2095ba921d0b8638fc6c53264938bc9e871c Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1584703 Commit-Queue: Jarryd Goodman <jarrydg@chromium.org> Auto-Submit: Jarryd Goodman <jarrydg@chromium.org> Reviewed-by: Marijn Kruisselbrink <mek@chromium.org> Cr-Commit-Position: refs/heads/master@{#654330} -- wpt-commits: 137236ccb7ea90e5f49b8f126b294307e8ecd955 wpt-pr: 16543
62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
// META: title=Blob Stream
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// META: script=../support/Blob.js
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// META: script=../../streams/resources/test-utils.js
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'use strict';
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// Takes in a ReadableStream and reads from it until it is done, returning
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// an array that contains the results of each read operation
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async function read_all_chunks(stream) {
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assert_true(stream instanceof ReadableStream);
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assert_true('getReader' in stream);
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const reader = stream.getReader();
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assert_true('read' in reader);
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let read_value = await reader.read();
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let out = [];
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let i = 0;
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while (!read_value.done) {
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for (let val of read_value.value) {
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out[i++] = val;
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}
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read_value = await reader.read();
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}
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return out;
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}
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promise_test(async () => {
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const blob = new Blob(["PASS"]);
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const stream = blob.stream();
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const chunks = await read_all_chunks(stream);
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for (let [index, value] of chunks.entries()) {
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assert_equals(value, "PASS".charCodeAt(index));
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}
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}, "Blob.stream()")
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promise_test(async () => {
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const blob = new Blob();
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const stream = blob.stream();
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const chunks = await read_all_chunks(stream);
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assert_array_equals(chunks, []);
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}, "Blob.stream() empty Blob")
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promise_test(async () => {
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const input_arr = [8, 241, 48, 123, 151];
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const typed_arr = new Uint8Array(input_arr);
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const blob = new Blob([typed_arr]);
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const stream = blob.stream();
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const chunks = await read_all_chunks(stream);
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assert_array_equals(chunks, input_arr);
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}, "Blob.stream() non-unicode input")
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promise_test(async() => {
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const input_arr = [8, 241, 48, 123, 151];
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const typed_arr = new Uint8Array(input_arr);
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let blob = new Blob([typed_arr]);
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const stream = blob.stream();
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blob = null;
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garbageCollect();
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const chunks = await read_all_chunks(stream);
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assert_array_equals(chunks, input_arr);
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}, "Blob.stream() garbage collection of blob shouldn't break stream" +
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"consumption")
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