Update wmts-hidpi, add nicer-api-docs

nicer-api-docs/closure-library/closure/goog/testing/singleton.js

@@ -0,0 +1,46 @@
+// Copyright 2009 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview This module simplifies testing code which uses stateful
+ * singletons. {@code goog.testing.singleton.reset} resets all instances, so
+ * next time when {@code getInstance} is called, a new instance is created.
+ * It's recommended to reset the singletons in {@code tearDown} to prevent
+ * interference between subsequent tests.
+ *
+ * The {@code goog.testing.singleton} functions expect that the goog.DEBUG flag
+ * is enabled, and the tests are either uncompiled or compiled without renaming.
+ *
+ */
+
+goog.provide('goog.testing.singleton');
+
+
+/**
+ * Deletes all singleton instances, so {@code getInstance} will return a new
+ * instance on next call.
+ */
+goog.testing.singleton.reset = function() {
+  var singletons = goog.getObjectByName('goog.instantiatedSingletons_');
+  var ctor;
+  while (ctor = singletons.pop()) {
+    delete ctor.instance_;
+  }
+};
+
+
+/**
+ * @deprecated Please use {@code goog.addSingletonGetter}.
+ */
+goog.testing.singleton.addSingletonGetter = goog.addSingletonGetter;