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'use strict';
if (self.importScripts) {
self.importScripts('../resources/test-utils.js');
self.importScripts('/resources/testharness.js');
}
let ReadableStreamReader;
let ReadableStreamController;
test(() => {
// It's not exposed globally, but we test a few of its properties here.
ReadableStreamReader = (new ReadableStream()).getReader().constructor;
}, 'Can get the ReadableStreamReader constructor indirectly');
test(() => {
// It's not exposed globally, but we test a few of its properties here.
new ReadableStream({
start(c) {
ReadableStreamController = c.constructor;
}
});
}, 'Can get the ReadableStreamController constructor indirectly');
function fakeReadableStream() {
return {
cancel() { return Promise.resolve(); },
getReader() { return new ReadableStreamReader(new ReadableStream()); },
pipeThrough(obj) { return obj.readable; },
pipeTo() { return Promise.resolve(); },
tee() { return [realReadableStream(), realReadableStream()]; }
};
}
function realReadableStream() {
return new ReadableStream();
}
function fakeReadableStreamReader() {
return {
get closed() { return Promise.resolve(); },
cancel() { return Promise.resolve(); },
read() { return Promise.resolve({ value: undefined, done: true }); },
releaseLock() { return; }
};
}
function fakeReadableStreamController() {
return {
close() { },
enqueue() { },
error() { }
};
}
promise_test(t => {
return methodRejects(t, ReadableStream.prototype, 'cancel', fakeReadableStream());
}, 'ReadableStream.prototype.cancel enforces a brand check');
test(() => {
methodThrows(ReadableStream.prototype, 'getReader', fakeReadableStream());
}, 'ReadableStream.prototype.getReader enforces a brand check');
test(() => {
methodThrows(ReadableStream.prototype, 'tee', fakeReadableStream());
}, 'ReadableStream.prototype.tee enforces a brand check');
test(() => {
assert_throws(new TypeError(), () => new ReadableStreamReader(fakeReadableStream()),
'Constructing a ReadableStreamReader should throw');
}, 'ReadableStreamReader enforces a brand check on its argument');
promise_test(t => {
return Promise.all([
getterRejects(t, ReadableStreamReader.prototype, 'closed', fakeReadableStreamReader()),
getterRejects(t, ReadableStreamReader.prototype, 'closed', realReadableStream())
]);
}, 'ReadableStreamReader.prototype.closed enforces a brand check');
promise_test(t => {
return Promise.all([
methodRejects(t, ReadableStreamReader.prototype, 'cancel', fakeReadableStreamReader()),
methodRejects(t, ReadableStreamReader.prototype, 'cancel', realReadableStream())
]);
}, 'ReadableStreamReader.prototype.cancel enforces a brand check');
promise_test(t => {
return Promise.all([
methodRejects(t, ReadableStreamReader.prototype, 'read', fakeReadableStreamReader()),
methodRejects(t, ReadableStreamReader.prototype, 'read', realReadableStream())
]);
}, 'ReadableStreamReader.prototype.read enforces a brand check');
test(() => {
methodThrows(ReadableStreamReader.prototype, 'releaseLock', fakeReadableStreamReader());
methodThrows(ReadableStreamReader.prototype, 'releaseLock', realReadableStream());
}, 'ReadableStreamReader.prototype.releaseLock enforces a brand check');
test(() => {
assert_throws(new TypeError(), () => new ReadableStreamController(fakeReadableStream()),
'Constructing a ReadableStreamController should throw');
}, 'ReadableStreamController enforces a brand check on its argument');
test(() => {
assert_throws(new TypeError(), () => new ReadableStreamController(realReadableStream()),
'Constructing a ReadableStreamController should throw');
}, 'ReadableStreamController can\'t be given a fully-constructed ReadableStream');
test(() => {
methodThrows(ReadableStreamController.prototype, 'close', fakeReadableStreamController());
}, 'ReadableStreamController.prototype.close enforces a brand check');
test(() => {
methodThrows(ReadableStreamController.prototype, 'enqueue', fakeReadableStreamController());
}, 'ReadableStreamController.prototype.enqueue enforces a brand check');
test(() => {
methodThrows(ReadableStreamController.prototype, 'error', fakeReadableStreamController());
}, 'ReadableStreamController.prototype.error enforces a brand check');
done();
|
