[Persistence] Add spec for local storage persistence

platform/persistence/local/test/LocalStoragePersistenceProviderSpec.js

@@ -0,0 +1,120 @@
+/*****************************************************************************
+ * 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,afterEach,waitsFor,jasmine*/
+
+
+define(
+    ["../src/LocalStoragePersistenceProvider"],
+    function (LocalStoragePersistenceProvider) {
+        "use strict";
+
+        describe("The local storage persistence provider", function () {
+            var mockQ,
+                testSpace = "testSpace",
+                mockCallback,
+                testLocalStorage,
+                provider;
+
+            function mockPromise(value) {
+                return (value || {}).then ? value : {
+                    then: function (callback) {
+                        return mockPromise(callback(value));
+                    }
+                };
+            }
+
+            beforeEach(function () {
+                testLocalStorage = {};
+
+                mockQ = jasmine.createSpyObj("$q", ["when", "reject"]);
+                mockCallback = jasmine.createSpy('callback');
+
+                mockQ.when.andCallFake(mockPromise);
+
+                provider = new LocalStoragePersistenceProvider(
+                    mockQ,
+                    testSpace,
+                    testLocalStorage
+                );
+
+                // White-boxy: Can't effectively mock window.localStorage,
+                // so override the provider's local reference to it.
+                provider.localStorage = testLocalStorage;
+            });
+
+            it("reports available spaces", function () {
+                provider.listSpaces().then(mockCallback);
+                expect(mockCallback).toHaveBeenCalledWith([testSpace]);
+            });
+
+            it("lists all available documents", function () {
+                provider.listObjects(testSpace).then(mockCallback);
+                expect(mockCallback.mostRecentCall.args[0]).toEqual([]);
+                provider.createObject(testSpace, 'abc', { a: 42 });
+                provider.listObjects(testSpace).then(mockCallback);
+                expect(mockCallback.mostRecentCall.args[0]).toEqual(['abc']);
+            });
+
+            it("allows object creation", function () {
+                var model = { someKey: "some value" };
+                provider.createObject(testSpace, "abc", model)
+                    .then(mockCallback);
+                expect(JSON.parse(testLocalStorage[testSpace]).abc)
+                    .toEqual(model);
+                expect(mockCallback.mostRecentCall.args[0]).toBeTruthy();
+            });
+
+            it("allows object models to be read back", function () {
+                var model = { someKey: "some other value" };
+                testLocalStorage[testSpace] = JSON.stringify({ abc: model });
+                provider.readObject(testSpace, "abc").then(mockCallback);
+                expect(mockCallback).toHaveBeenCalledWith(model);
+            });
+
+            it("allows object update", function () {
+                var model = { someKey: "some new value" };
+                testLocalStorage[testSpace] = JSON.stringify({
+                    abc: { somethingElse: 42 }
+                });
+                provider.updateObject(testSpace, "abc", model)
+                    .then(mockCallback);
+                expect(JSON.parse(testLocalStorage[testSpace]).abc)
+                    .toEqual(model);
+            });
+
+            it("allows object deletion", function () {
+                testLocalStorage[testSpace] = JSON.stringify({
+                    abc: { somethingElse: 42 }
+                });
+                provider.deleteObject(testSpace, "abc").then(mockCallback);
+                expect(testLocalStorage[testSpace].abc)
+                    .toBeUndefined();
+            });
+
+            it("returns undefined when objects are not found", function () {
+                provider.readObject("testSpace", "abc").then(mockCallback);
+                expect(mockCallback).toHaveBeenCalledWith(undefined);
+            });
+
+        });
+    }
+);