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// META: global=window,worker
'use strict';
promise_test(() => {
const stream = new ReadableStream({
start(c) {
c.close();
},
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
const view = new Uint8Array([1, 2, 3]);
return reader.read(view).then(({ value, done }) => {
// Sanity checks
assert_true(value instanceof Uint8Array, 'The value read must be a Uint8Array');
assert_not_equals(value, view, 'The value read must not be the *same* Uint8Array');
assert_array_equals(value, [], 'The value read must be an empty Uint8Array, since the stream is closed');
assert_true(done, 'done must be true, since the stream is closed');
// The important assertions
assert_not_equals(value.buffer, view.buffer, 'a different ArrayBuffer must underlie the value');
assert_equals(view.buffer.byteLength, 0, 'the original buffer must be detached');
});
}, 'ReadableStream with byte source: read()ing from a closed stream still transfers the buffer');
promise_test(() => {
const stream = new ReadableStream({
start(c) {
c.enqueue(new Uint8Array([1, 2, 3]));
},
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
const view = new Uint8Array([4, 5, 6]);
return reader.read(view).then(({ value, done }) => {
// Sanity checks
assert_true(value instanceof Uint8Array, 'The value read must be a Uint8Array');
assert_not_equals(value, view, 'The value read must not be the *same* Uint8Array');
assert_array_equals(value, [1, 2, 3], 'The value read must be the enqueued Uint8Array, not the original values');
assert_false(done, 'done must be false, since the stream is not closed');
// The important assertions
assert_not_equals(value.buffer, view.buffer, 'a different ArrayBuffer must underlie the value');
assert_equals(view.buffer.byteLength, 0, 'the original buffer must be detached');
});
}, 'ReadableStream with byte source: read()ing from a stream with queued chunks still transfers the buffer');
test(() => {
new ReadableStream({
start(c) {
const view = new Uint8Array([1, 2, 3]);
c.enqueue(view);
assert_throws_js(TypeError, () => c.enqueue(view));
},
type: 'bytes'
});
}, 'ReadableStream with byte source: enqueuing an already-detached buffer throws');
test(() => {
new ReadableStream({
start(c) {
const view = new Uint8Array([]);
assert_throws_js(TypeError, () => c.enqueue(view));
},
type: 'bytes'
});
}, 'ReadableStream with byte source: enqueuing a zero-length buffer throws');
test(() => {
new ReadableStream({
start(c) {
const view = new Uint8Array(new ArrayBuffer(10), 0, 0);
assert_throws_js(TypeError, () => c.enqueue(view));
},
type: 'bytes'
});
}, 'ReadableStream with byte source: enqueuing a zero-length view on a non-zero-length buffer throws');
promise_test(t => {
const stream = new ReadableStream({
start(c) {
c.enqueue(new Uint8Array([1, 2, 3]));
},
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
const view = new Uint8Array([4, 5, 6]);
return reader.read(view).then(() => {
// view is now detached
return promise_rejects_js(t, TypeError, reader.read(view));
});
}, 'ReadableStream with byte source: reading into an already-detached buffer rejects');
promise_test(t => {
const stream = new ReadableStream({
start(c) {
c.enqueue(new Uint8Array([1, 2, 3]));
},
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
const view = new Uint8Array();
return promise_rejects_js(t, TypeError, reader.read(view));
}, 'ReadableStream with byte source: reading into a zero-length buffer rejects');
promise_test(t => {
const stream = new ReadableStream({
start(c) {
c.enqueue(new Uint8Array([1, 2, 3]));
},
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
const view = new Uint8Array(new ArrayBuffer(10), 0, 0);
return promise_rejects_js(t, TypeError, reader.read(view));
}, 'ReadableStream with byte source: reading into a zero-length view on a non-zero-length buffer rejects');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
// Detach it by reading into it
reader.read(c.byobRequest.view);
assert_throws_js(TypeError, () => c.byobRequest.respond(1),
'respond() must throw if the corresponding view has become detached');
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respond() throws if the BYOB request\'s buffer has been detached (in the ' +
'readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
c.close();
// Detach it by reading into it
reader.read(c.byobRequest.view);
assert_throws_js(TypeError, () => c.byobRequest.respond(0),
'respond() must throw if the corresponding view has become detached');
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respond() throws if the BYOB request\'s buffer has been detached (in the ' +
'closed state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
// Detach it by reading into it
const view = new Uint8Array([1, 2, 3]);
reader.read(view);
assert_throws_js(TypeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer has been detached ' +
'(in the readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array();
assert_throws_js(TypeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer is zero-length ' +
'(in the readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array(c.byobRequest.view.buffer, 0, 0);
assert_throws_js(TypeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view is zero-length on a ' +
'non-zero-length buffer (in the readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = c.byobRequest.view.subarray(1, 2);
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view has a different offset ' +
'(in the readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
c.close();
const view = c.byobRequest.view.subarray(1, 1);
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view has a different offset ' +
'(in the closed state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array(new ArrayBuffer(10), 0, 3);
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer has a ' +
'different length (in the readable state)');
async_test(t => {
// Tests https://github.com/nodejs/node/issues/41886
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array(new ArrayBuffer(11), 0, 3);
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes',
autoAllocateChunkSize: 10
});
const reader = stream.getReader();
reader.read();
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer has a ' +
'different length (autoAllocateChunkSize)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array(c.byobRequest.view.buffer, 0, 4);
view[0] = 20;
view[1] = 21;
view[2] = 22;
view[3] = 23;
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
const buffer = new ArrayBuffer(10);
const view = new Uint8Array(buffer, 0, 3);
view[0] = 10;
view[1] = 11;
view[2] = 12;
reader.read(view);
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view has a larger length ' +
'(in the readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
c.close();
// Detach it by reading into it
const view = new Uint8Array([1, 2, 3]);
reader.read(view);
assert_throws_js(TypeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer has been detached ' +
'(in the closed state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array();
c.close();
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer is zero-length ' +
'(in the closed state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array(c.byobRequest.view.buffer, 0, 1);
c.close();
assert_throws_js(TypeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view is non-zero-length ' +
'(in the closed state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
const view = new Uint8Array(new ArrayBuffer(10), 0, 0);
c.close();
assert_throws_js(RangeError, () => c.byobRequest.respondWithNewView(view));
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: respondWithNewView() throws if the supplied view\'s buffer has a ' +
'different length (in the closed state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
// Detach it by reading into it
reader.read(c.byobRequest.view);
assert_throws_js(TypeError, () => c.enqueue(new Uint8Array([1])),
'enqueue() must throw if the BYOB request\'s buffer has become detached');
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: enqueue() throws if the BYOB request\'s buffer has been detached (in the ' +
'readable state)');
async_test(t => {
const stream = new ReadableStream({
pull: t.step_func_done(c => {
c.close();
// Detach it by reading into it
reader.read(c.byobRequest.view);
assert_throws_js(TypeError, () => c.enqueue(new Uint8Array([1])),
'enqueue() must throw if the BYOB request\'s buffer has become detached');
}),
type: 'bytes'
});
const reader = stream.getReader({ mode: 'byob' });
reader.read(new Uint8Array([4, 5, 6]));
}, 'ReadableStream with byte source: enqueue() throws if the BYOB request\'s buffer has been detached (in the ' +
'closed state)');
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