[test] Process to locally develop and upstream test262 tests

test/test262/local-tests/test/intl402/DateTimeFormat/12.1.1_1.js

Index: test/test262/local-tests/test/intl402/DateTimeFormat/12.1.1_1.js
diff --git a/test/test262/local-tests/test/intl402/DateTimeFormat/12.1.1_1.js b/test/test262/local-tests/test/intl402/DateTimeFormat/12.1.1_1.js
new file mode 100644
index 0000000000000000000000000000000000000000..ef843d4bb483d07a64b01d00cbbd34c63d9222ac
--- /dev/null
+++ b/test/test262/local-tests/test/intl402/DateTimeFormat/12.1.1_1.js
@@ -0,0 +1,42 @@
+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 12.1.1_1
+description: Tests that the this-value is ignored in DateTimeFormat.
+author: Norbert Lindenberg
+includes: [testIntl.js]
+---*/
+
+testWithIntlConstructors(function (Constructor) {
+    var obj, newObj;
+
+    if (Constructor === Intl.DateTimeFormat) {
+      obj = new Constructor();
+      newObj = Intl.DateTimeFormat.call(obj);
+      if (obj !== newObj) {
+        $ERROR("Should have modified existing object.");
+      }
+      var key = Object.getOwnPropertySymbols(newObj)[0];
+      if (!(newObj[key] instanceof Intl.DateTimeFormat)) {
+        $ERROR("Should have installed a DateTimeFormat instance.");
+      }
+      return true;
+    }
+
+    // variant 1: use constructor in a "new" expression
+    obj = new Constructor();
+    newObj = Intl.DateTimeFormat.call(obj);
+    if (obj === newObj) {
+      $ERROR("DateTimeFormat object created with \"new\" was not ignored as this-value.");
+    }
+
+    // variant 2: use constructor as a function
+    obj = Constructor();
+    newObj = Intl.DateTimeFormat.call(obj);
+    if (obj === newObj) {
+      $ERROR("DateTimeFormat object created with constructor as function was not ignored as this-value.");
+    }
+
+    return true;
+});