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// META: title=Blob Stream
// META: script=../support/Blob.js
'use strict';
// Takes in a ReadableStream and reads from it until it is done, returning
// an array that contains the results of each read operation
async function read_all_chunks(stream) {
assert_true(stream instanceof ReadableStream);
assert_true('getReader' in stream);
const reader = stream.getReader();
assert_true('read' in reader);
let read_value = await reader.read();
let out = [];
let i = 0;
while (!read_value.done) {
for (let val of read_value.value) {
out[i++] = val;
}
read_value = await reader.read();
}
return out;
}
promise_test(async () => {
const blob = new Blob(["PASS"]);
const stream = await blob.stream()
const chunks = await read_all_chunks(stream);
for (let [index, value] of chunks.entries()) {
assert_equals(value, "PASS".charCodeAt(index));
}
}, "Blob.stream()")
promise_test(async () => {
const blob = new Blob();
const stream = await blob.stream()
const chunks = await read_all_chunks(stream);
assert_array_equals(chunks, []);
}, "Blob.stream() empty Blob")
promise_test(async () => {
const input_arr = [8, 241, 48, 123, 151];
const typed_arr = new Uint8Array(input_arr);
const blob = new Blob([typed_arr]);
const stream = await blob.stream()
const chunks = await read_all_chunks(stream);
assert_array_equals(chunks, input_arr)
}, "Blob.stream() non-unicode input")
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