1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/non262/TypedArray/keys.js b/js/src/tests/non262/TypedArray/keys.js
new file mode 100644
index 0000000000..88477cd758
--- /dev/null
+++ b/js/src/tests/non262/TypedArray/keys.js
@@ -0,0 +1,36 @@
+for (var constructor of anyTypedArrayConstructors) {
+    assertEq(constructor.prototype.keys.length, 0);
+    assertEq(constructor.prototype.keys.name, "keys");
+
+    assertDeepEq([...new constructor(0).keys()], []);
+    assertDeepEq([...new constructor(1).keys()], [0]);
+    assertDeepEq([...new constructor(2).keys()], [0, 1]);
+    assertDeepEq([...new constructor([15]).keys()], [0]);
+
+    var arr = new constructor([1, 2, 3]);
+    var iterator = arr.keys();
+    assertDeepEq(iterator.next(), {value: 0, done: false});
+    assertDeepEq(iterator.next(), {value: 1, done: false});
+    assertDeepEq(iterator.next(), {value: 2, done: false});
+    assertDeepEq(iterator.next(), {value: undefined, done: true});
+
+    // Called from other globals.
+    if (typeof newGlobal === "function") {
+        var keys = newGlobal()[constructor.name].prototype.keys;
+        assertDeepEq([...keys.call(new constructor(2))], [0, 1]);
+        arr = new (newGlobal()[constructor.name])(2);
+        assertEq([...constructor.prototype.keys.call(arr)].toString(), "0,1");
+    }
+
+    // Throws if `this` isn't a TypedArray.
+    var invalidReceivers = [undefined, null, 1, false, "", Symbol(), [], {}, /./,
+                            new Proxy(new constructor(), {})];
+    invalidReceivers.forEach(invalidReceiver => {
+        assertThrowsInstanceOf(() => {
+            constructor.prototype.keys.call(invalidReceiver);
+        }, TypeError, "Assert that keys fails if this value is not a TypedArray");
+    });
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);