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-rw-r--r--js/src/tests/non262/ReadableStream/basic-pull.js37
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/non262/ReadableStream/basic-pull.js b/js/src/tests/non262/ReadableStream/basic-pull.js
new file mode 100644
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+++ b/js/src/tests/non262/ReadableStream/basic-pull.js
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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);