From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 ...y-methods-multiple-throw-close-iterator-once.js | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 js/src/tests/non262/AsyncIterator/prototype/lazy-methods-multiple-throw-close-iterator-once.js

(limited to 'js/src/tests/non262/AsyncIterator/prototype/lazy-methods-multiple-throw-close-iterator-once.js')

diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-multiple-throw-close-iterator-once.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-multiple-throw-close-iterator-once.js
new file mode 100644
index 0000000000..45e88be26a
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-multiple-throw-close-iterator-once.js
@@ -0,0 +1,90 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+//
+//
+/*---
+esid: pending
+description: Calling `throw` on a lazy %AsyncIterator.prototype% method multiple times closes the source iterator once.
+info: >
+  Iterator Helpers proposal 2.1.6
+features: [iterator-helpers]
+---*/
+
+class TestError extends Error {}
+
+class TestIterator extends AsyncIterator {
+  async next() { 
+    return {done: false, value: 1};
+  }
+
+  closeCount = 0;
+  async return(value) {
+    this.closeCount++;
+    return {done: true, value};
+  }
+}
+
+async function* gen(x) { yield x; }
+
+const methods = [
+  iter => iter.map(x => x),
+  iter => iter.filter(x => true),
+  iter => iter.take(Infinity),
+  iter => iter.drop(0),
+  iter => iter.asIndexedPairs(),
+  iter => iter.flatMap(gen),
+];
+
+(async () => {
+  // Call `throw` after stepping the iterator once:
+  for (const method of methods) {
+    const iter = new TestIterator();
+    const iterHelper = method(iter);
+
+    await iterHelper.next()
+    assertEq(iter.closeCount, 0);
+      
+    try {
+      await iterHelper.throw(new TestError());
+      assertEq(true, false, 'Expected reject');
+    } catch (exc) {
+      assertEq(exc instanceof TestError, true);
+    }
+    assertEq(iter.closeCount, 1);
+
+    try {
+      await iterHelper.throw(new TestError());
+      assertEq(true, false, 'Expected reject');
+    } catch (exc) {
+      assertEq(exc instanceof TestError, true);
+    }
+    assertEq(iter.closeCount, 1);
+  }
+
+  // Call `throw` before stepping the iterator:
+  for (const method of methods) {
+    const iter = new TestIterator();
+    const iterHelper = method(iter);
+
+    assertEq(iter.closeCount, 0);
+
+    try {
+      await iterHelper.throw(new TestError());
+      assertEq(true, false, 'Expected reject');
+    } catch (exc) {
+      assertEq(exc instanceof TestError, true);
+    }
+    assertEq(iter.closeCount, 1);
+
+    try {
+      await iterHelper.throw(new TestError());
+      assertEq(true, false, 'Expected reject');
+    } catch (exc) {
+      assertEq(exc instanceof TestError, true);
+    }
+    assertEq(iter.closeCount, 1);
+  }
+})();
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);
-- 
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