1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/isArray.js b/js/src/jit-test/tests/ion/isArray.js
new file mode 100644
index 0000000000..db79122935
--- /dev/null
+++ b/js/src/jit-test/tests/ion/isArray.js
@@ -0,0 +1,47 @@
+function f() {
+    assertEq(Array.isArray(10), false);
+    assertEq(Array.isArray([]), true);
+    assertEq(Array.isArray(Math), false);
+
+    var objs = [{}, []];
+    for (var i=0; i<objs.length; i++)
+        assertEq(Array.isArray(objs[i]), i === 1);
+    var arr = [[], [], 1];
+    for (var i=0; i<arr.length; i++)
+        assertEq(Array.isArray(arr[i]), i < 2);
+}
+f();
+f();
+f();
+
+function testObjects() {
+    var arr = [{}, [1], Array.prototype,
+               new Proxy(this, {}), new Proxy([], {})];
+    while (true) {
+        var arrays = 0;
+        for (var i = 0; i < arr.length; i++) {
+            if (Array.isArray(arr[i]))
+                arrays++;
+        }
+        assertEq(arrays, 3);
+        if (inIon())
+            break;
+    }
+}
+testObjects();
+
+function testValues() {
+    var arr = [1, {}, [1], Array.prototype, null,
+               new Proxy(this, {}), new Proxy([], {})];
+    while (true) {
+        var arrays = 0;
+        for (var i = 0; i < arr.length; i++) {
+            if (Array.isArray(arr[i]))
+                arrays++;
+        }
+        assertEq(arrays, 3);
+        if (inIon())
+            break;
+    }
+}
+testValues();