1 files changed, 138 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/for_of_1.js b/js/src/tests/non262/Array/for_of_1.js
new file mode 100644
index 0000000000..0233c1d278
--- /dev/null
+++ b/js/src/tests/non262/Array/for_of_1.js
@@ -0,0 +1,138 @@
+// Test corner cases of for-of iteration over Arrays.
+// The current SetObject::construct method uses a ForOfIterator to extract
+// values from the array, so we use that mechanism to test ForOfIterator here.
+
+// Test the properties and prototype of a generator object.
+function TestManySmallArrays() {
+    function doIter(f, arr) {
+        return f(...new Set(arr));
+    }
+
+    function fun(a, b, c) {
+        var result = 0;
+        for (var i = 0; i < arguments.length; i++)
+            result += arguments[i];
+        return result;
+    }
+
+
+    var TRUE_SUM = 0;
+    var N = 100;
+    var M = 3;
+    var sum = 0;
+    for (var i = 0; i < N; i++) {
+        var arr = new Array(M);
+        for (var j = 0; j < M; j++) {
+            arr[j] = j;
+            TRUE_SUM += j;
+        }
+        sum += doIter(fun, arr);
+    }
+    assertEq(sum, TRUE_SUM);
+}
+TestManySmallArrays();
+
+// Test the properties and prototype of a generator object.
+function TestSingleSmallArray() {
+    function doIter(f, arr) {
+        return f(...new Set(arr));
+    }
+
+    function fun(a, b, c) {
+        var result = 0;
+        for (var i = 0; i < arguments.length; i++)
+            result += arguments[i];
+        return result;
+    }
+
+
+    var TRUE_SUM = 0;
+    var N = 100;
+    var M = 3;
+    var arr = new Array(M);
+    for (var j = 0; j < M; j++) {
+        arr[j] = j;
+        TRUE_SUM += j;
+    }
+    TRUE_SUM *= N;
+
+    var sum = 0;
+    for (var i = 0; i < N; i++) {
+        sum += doIter(fun, arr);
+    }
+    assertEq(sum, TRUE_SUM);
+}
+TestSingleSmallArray();
+
+
+function TestChangeArrayPrototype() {
+    function doIter(f, arr) {
+        return f(...new Set(arr));
+    }
+
+    function fun(a, b, c) {
+        var result = 0;
+        for (var i = 0; i < arguments.length; i++)
+            result += arguments[i];
+        return result;
+    }
+
+    var Proto1 = Object.create(Array.prototype);
+
+    var TRUE_SUM = 0;
+    var N = 100;
+    var MID = N/2;
+    var M = 3;
+    var arr = new Array(M);
+    var ARR_SUM = 0;
+    for (var j = 0; j < M; j++) {
+        arr[j] = j;
+        ARR_SUM += j;
+    }
+
+    var sum = 0;
+    for (var i = 0; i < N; i++) {
+        sum += doIter(fun, arr);
+        if (i == MID)
+            arr.__proto__ = Proto1;
+        TRUE_SUM += ARR_SUM;
+    }
+    assertEq(sum, TRUE_SUM);
+}
+TestChangeArrayPrototype();
+
+
+function TestChangeManyArrayShape() {
+    function doIter(f, arr) {
+        return f(...new Set(arr));
+    }
+
+    function fun(a, b, c) {
+        var result = 0;
+        for (var i = 0; i < arguments.length; i++)
+            result += arguments[i];
+        return result;
+    }
+
+    var TRUE_SUM = 0;
+    var N = 100;
+    var MID = N/2;
+    var M = 3;
+    var sum = 0;
+    for (var i = 0; i < N; i++) {
+        var arr = new Array(M);
+        var ARR_SUM = 0;
+        for (var j = 0; j < M; j++) {
+            arr[j] = j;
+            ARR_SUM += j;
+        }
+        arr['v_' + i] = i;
+        sum += doIter(fun, arr);
+        TRUE_SUM += ARR_SUM;
+    }
+    assertEq(sum, TRUE_SUM);
+}
+TestChangeManyArrayShape();
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);