1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/harness/asyncHelpers-asyncTest-then-resolves.js b/js/src/tests/test262/harness/asyncHelpers-asyncTest-then-resolves.js
new file mode 100644
index 0000000000..ae080975ce
--- /dev/null
+++ b/js/src/tests/test262/harness/asyncHelpers-asyncTest-then-resolves.js
@@ -0,0 +1,57 @@
+// |reftest| async
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    The 'asyncTest' helper calls $DONE with undefined, regardless of what value the promise resolves with
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+var doneCalls = 0;
+var realDone = $DONE;
+globalThis.$DONE = function (noError) {
+  doneCalls++;
+  assert.sameValue(
+    noError,
+    undefined,
+    "asyncTest should discard promise's resolved value"
+  );
+};
+
+(async function () {
+  asyncTest(function () {
+    return Promise.resolve(null);
+  });
+})()
+  .then(() => {
+    assert.sameValue(doneCalls, 1, "asyncTest called $DONE with undefined");
+    asyncTest(function () {
+      return Promise.resolve({});
+    });
+  })
+  .then(() => {
+    assert.sameValue(doneCalls, 2, "asyncTest called $DONE with undefined");
+    asyncTest(function () {
+      return Promise.resolve("hi");
+    });
+  })
+  .then(() => {
+    assert.sameValue(doneCalls, 3, "asyncTest called $DONE with undefined");
+    asyncTest(function () {
+      return Promise.resolve(10);
+    });
+  })
+  .then(() => {
+    assert.sameValue(doneCalls, 4, "asyncTest called $DONE with undefined");
+    asyncTest(function () {
+      return {
+        then(res, rej) {
+          res(true);
+        },
+      };
+    });
+  })
+  .then(() => {
+    assert.sameValue(doneCalls, 5, "asyncTest called $DONE with undefined");
+  })
+  .then(realDone, realDone);