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// |reftest| skip-if(!this.ReadableStream||!this.drainJobQueue)
if ("ignoreUnhandledRejections" in this) {
ignoreUnhandledRejections();
}
// Example of a stream that produces data on demand, the "pull" model.
let fibStream = new ReadableStream({
start(controller) {
this.a = 0;
this.b = 1;
controller.enqueue(0);
controller.enqueue(1);
},
pull(controller) {
[this.a, this.b] = [this.b, this.a + this.b];
controller.enqueue(this.b);
}
});
async function test() {
assertEq(fibStream.locked, false);
let reader = fibStream.getReader();
assertEq(fibStream.locked, true);
let results = [];
while (results.length < 10) {
results.push((await reader.read()).value);
}
assertEq(results.join(), "0,1,1,2,3,5,8,13,21,34");
reader.releaseLock();
assertEq(fibStream.locked, false);
}
runAsyncTest(test);