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// META: global=window,worker
'use strict';
promise_test(async t => {
const rs = new ReadableStream({
pull: t.unreached_func('pull() should not be called'),
type: 'bytes'
});
const reader = rs.getReader({ mode: 'byob' });
const memory = new WebAssembly.Memory({ initial: 1 });
const view = new Uint8Array(memory.buffer, 0, 1);
await promise_rejects_js(t, TypeError, reader.read(view));
}, 'ReadableStream with byte source: read() with a non-transferable buffer');
test(t => {
let controller;
const rs = new ReadableStream({
start(c) {
controller = c;
},
pull: t.unreached_func('pull() should not be called'),
type: 'bytes'
});
const memory = new WebAssembly.Memory({ initial: 1 });
const view = new Uint8Array(memory.buffer, 0, 1);
assert_throws_js(TypeError, () => controller.enqueue(view));
}, 'ReadableStream with byte source: enqueue() with a non-transferable buffer');
promise_test(async t => {
let byobRequest;
let resolvePullCalledPromise;
const pullCalledPromise = new Promise(resolve => {
resolvePullCalledPromise = resolve;
});
const rs = new ReadableStream({
pull(controller) {
byobRequest = controller.byobRequest;
resolvePullCalledPromise();
},
type: 'bytes'
});
const memory = new WebAssembly.Memory({ initial: 1 });
// Make sure the backing buffers of both views have the same length
const byobView = new Uint8Array(new ArrayBuffer(memory.buffer.byteLength), 0, 1);
const newView = new Uint8Array(memory.buffer, byobView.byteOffset, byobView.byteLength);
const reader = rs.getReader({ mode: 'byob' });
reader.read(byobView).then(
t.unreached_func('read() should not resolve'),
t.unreached_func('read() should not reject')
);
await pullCalledPromise;
assert_throws_js(TypeError, () => byobRequest.respondWithNewView(newView));
}, 'ReadableStream with byte source: respondWithNewView() with a non-transferable buffer');
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