1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/testInArray.js b/js/src/jit-test/tests/ion/testInArray.js
new file mode 100644
index 0000000000..8650d7d3d6
--- /dev/null
+++ b/js/src/jit-test/tests/ion/testInArray.js
@@ -0,0 +1,41 @@
+function test1() {
+    var dense = [1, 2, 3];
+    var denseHoles = [1, , 3];
+    var result = 0;
+
+    for (var i = 0; i < 70; i++) {
+        if (i in dense) result += 1;
+        if (1 in dense) result += 2;
+        if (3 in dense) result += 3;
+        if (-1000 in dense) result += 4;
+        if (i in denseHoles) result += 5;
+        if (1 in denseHoles) result += 6;
+    }
+
+    assertEq(result, 153);
+}
+test1();
+
+function test2() {
+    var a = [1, 2, 3];
+
+    for (var i = 0; i < 70; i++) {
+        assertEq(-0 in a, true);
+        assertEq(Math.sqrt(4) in a, true);
+        assertEq(1.9 in a, false);
+        assertEq(NaN in a, false);
+        assertEq(Infinity in a, false);
+    }
+}
+test2();
+
+function test3() {
+    var a = [1, , 3];
+
+    for (var i = 0; i < 70; i++) {
+        if (i == 60)
+            Object.prototype[1] = null;
+        assertEq(1 in a, i >= 60);
+    }
+}
+test3();
+\ No newline at end of file