X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/2d39b0e377c0896910ee49ae70082ba665faf986..ed1e77d3adeb83d26fd1dfb16dd84cabdcefd250:/tests/stress/for-in-tests.js

diff --git a/tests/stress/for-in-tests.js b/tests/stress/for-in-tests.js
new file mode 100644
index 0000000..fc6258e
--- /dev/null
+++ b/tests/stress/for-in-tests.js
@@ -0,0 +1,100 @@
+(function() {
+    // Iterate over an array with normal indexed properties.
+    var foo = function() {
+        var a = [1, 2, 3, 4, 5];
+        var sum = 0;
+        var result = "";
+        for (var p in a)
+            result += a[p];
+        return result;
+    };
+    noInline(foo);
+    for (var i = 0; i < 10000; ++i) {
+        if (foo() !== "12345")
+            throw new Error("bad result");
+    }
+    foo(null);
+})();
+(function() {
+    // Iterate over an object with normal non-indexed properties.
+    var foo = function() {
+        var o = {};
+        o.x = 1;
+        o.y = 2;
+        o.z = 3;
+        var result = "";
+        for (var p in o)
+            result += o[p];
+        return result;
+    };
+    noInline(foo);
+    for (var i = 0; i < 10000; ++i) {
+        if (foo() !== "123")
+            throw new Error("bad result");
+    }
+    foo(null);
+})();
+(function() {
+    // Iterate over an object with both indexed and non-indexed properties.
+    var foo = function() {
+        var o = {};
+        o.x = 1;
+        o.y = 2;
+        o.z = 3;
+        o[0] = 4;
+        o[1] = 5;
+        o[2] = 6;
+        var result = "";
+        for (var p in o)
+            result += o[p];
+        return result;
+    };
+    noInline(foo);
+    for (var i = 0; i < 10000; ++i) {
+        if (foo() != "456123")
+            throw new Error("bad result");
+    }
+    foo(null);
+})();
+(function() {
+    // Iterate over an array with both indexed and non-indexed properties.
+    var foo = function() {
+        var a = [4, 5, 6];
+        a.x = 1;
+        a.y = 2;
+        a.z = 3;
+        var result = "";
+        for (var p in a)
+            result += a[p];
+        return result;
+    };
+    noInline(foo);
+    for (var i = 0; i < 10000; ++i) {
+        if (foo() !== "456123")
+            throw new Error("bad result");
+    }
+    foo(null);
+})();
+(function() {
+    var foo = function(a, b) {
+        for (var p in b) {
+            var f1 = a[p];
+            var f2 = b[p];
+            if (f1 === f2)
+                continue;
+            a[p] = b[p];
+        }
+    };
+    noInline(foo);
+    for (var i = 0; i < 10000; ++i) {
+        var o1 = {};
+        var o2 = {};
+        o2.x = 42;
+        o2.y = 53;
+        foo(o1, o2);
+        if (o1.x !== o2.x)
+            throw new Error("bad result: " + o1.x + "!==" + o2.x);
+        if (o1.y !== o2.y)
+            throw new Error("bad result: " + o1.y + "!==" + o2.y);
+    }
+})();