1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/isArray.js b/js/src/tests/non262/Array/isArray.js
new file mode 100644
index 0000000000..b752ad54e4
--- /dev/null
+++ b/js/src/tests/non262/Array/isArray.js
@@ -0,0 +1,67 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+var global = this;
+var otherGlobal = newGlobal();
+
+var thisGlobal = () => global;
+var alternateGlobals = (function(i) {
+    return () => (i++ % 2) === 0 ? global : otherGlobal;
+})(0);
+
+function performTests(pickGlobal)
+{
+    // Base case.
+    assertEq(Array.isArray([]), true);
+
+    // Simple case: proxy to an array.
+    var proxy = new (pickGlobal()).Proxy([], {});
+    assertEq(Array.isArray(proxy), true);
+
+    // Recursive proxy ultimately terminating in an array.
+    for (var i = 0; i < 10; i++) {
+        proxy = new (pickGlobal()).Proxy(proxy, {});
+        assertEq(Array.isArray(proxy), true);
+    }
+
+    // Revocable proxy to an array.
+    var revocable = (pickGlobal()).Proxy.revocable([], {});
+    proxy = revocable.proxy;
+    assertEq(Array.isArray(proxy), true);
+
+    // Recursive proxy ultimately terminating in a revocable proxy to an array.
+    for (var i = 0; i < 10; i++) {
+        proxy = new (pickGlobal()).Proxy(proxy, {});
+        assertEq(Array.isArray(proxy), true);
+    }
+
+    // Revoked proxy to (formerly) an array.
+    revocable.revoke();
+    assertThrowsInstanceOf(() => Array.isArray(revocable.proxy), TypeError);
+
+    // Recursive proxy ultimately terminating in a revoked proxy to an array.
+    assertThrowsInstanceOf(() => Array.isArray(proxy), TypeError);
+
+}
+
+performTests(thisGlobal);
+performTests(alternateGlobals);
+
+function crossGlobalTest()
+{
+    var array = new otherGlobal.Array();
+
+    // Array from another global.
+    assertEq(Array.isArray(array), true);
+
+    // Proxy to an array from another global.
+    assertEq(Array.isArray(new Proxy(array, {})), true);
+
+    // Other-global proxy to an array from that selfsame global.
+    assertEq(Array.isArray(new otherGlobal.Proxy(array, {})), true);
+}
+
+crossGlobalTest();
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);