JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / tests / stress / array-fill-put-by-val.js

diff --git a/tests/stress/array-fill-put-by-val.js b/tests/stress/array-fill-put-by-val.js
new file mode 100644 (file)
index 0000000..29eefef
--- /dev/null
+++ b/tests/stress/array-fill-put-by-val.js
@@ -0,0 +1,44 @@
+function shouldThrow(func, message) {
+    var error = null;
+    try {
+        func();
+    } catch (e) {
+        error = e;
+    }
+    if (!error)
+        throw new Error("not thrown.");
+    if (String(error) !== message)
+        throw new Error("bad error: " + String(error));
+}
+
+var array = new Array(10);
+
+for (var i = 0; i < 10; ++i) {
+    (function (index) {
+        var seenOnce = false;
+        var storage = null;
+        Object.defineProperty(Array.prototype, index, {
+            get() {
+                throw new Error('get is called.' + index);
+                return storage;
+            },
+            set(value) {
+                if (seenOnce)
+                    throw new Error('set is called.' + index);
+                seenOnce = true;
+                storage = value;
+                return storage;
+            }
+        });
+    }(i));
+}
+
+// No error, but all seenOnce becomes true.
+array.fill(42);
+
+// Ensures that all setter is called once.
+for (var i = 0; i < 10; ++i) {
+    shouldThrow(function () {
+        array[i] = i;
+    }, "Error: set is called." + i);
+}