[Core] Test missing model decorator

WTD-1334.

platform/core/test/models/MissingModelDecoratorSpec.js

@@ -0,0 +1,84 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2014-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is 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.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/
+
+define(
+    ["../../src/models/MissingModelDecorator"],
+    function (MissingModelDecorator) {
+        "use strict";
+
+        describe("The missing model decorator", function () {
+            var mockModelService,
+                testModels,
+                decorator;
+
+            function asPromise(value) {
+                return (value || {}).then ? value : {
+                    then: function (callback) {
+                        return asPromise(callback(value));
+                    }
+                };
+            }
+
+            beforeEach(function () {
+                mockModelService = jasmine.createSpyObj(
+                    "modelService",
+                    [ "getModels" ]
+                );
+
+                testModels = {
+                    testId: { someKey: "some value" }
+                };
+
+                mockModelService.getModels.andReturn(asPromise(testModels));
+
+                decorator = new MissingModelDecorator(mockModelService);
+            });
+
+            it("delegates to the wrapped model service", function () {
+                decorator.getModels(['a', 'b', 'c']);
+                expect(mockModelService.getModels)
+                    .toHaveBeenCalledWith(['a', 'b', 'c']);
+            });
+
+            it("provides models for any IDs which are missing", function () {
+                var models;
+                decorator.getModels(['testId', 'otherId'])
+                    .then(function (m) { models = m; });
+                expect(models.otherId).toBeDefined();
+            });
+
+            it("does not overwrite existing models", function () {
+                var models;
+                decorator.getModels(['testId', 'otherId'])
+                    .then(function (m) { models = m; });
+                expect(models.testId).toEqual({ someKey: "some value" });
+            });
+
+            it("does not modify the wrapped service's response", function () {
+                decorator.getModels(['testId', 'otherId']);
+                expect(testModels.otherId).toBeUndefined();
+            });
+        });
+
+    }
+);

platform/core/test/suite.json

@@ -15,6 +15,7 @@
     "capabilities/RelationshipCapability",
 
     "models/ModelAggregator",
+    "models/MissingModelDecorator",
     "models/PersistedModelProvider",
     "models/RootModelProvider",
     "models/StaticModelProvider",