[Layout] Move spec for view switcher

Move spec for view switcher from bundle
platform/commonUI/browse to bundle
platform/commonUI/general to reflect refactoring
to simplify usage in other places (including in
Layouts, which are being transitioned for
WTD-535.)

platform/commonUI/general/test/ViewSwitcherControllerSpec.js

@@ -0,0 +1,86 @@
+/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/
+
+/**
+ * MCTRepresentationSpec. Created by vwoeltje on 11/6/14.
+ */
+define(
+    ["../src/ViewSwitcherController"],
+    function (ViewSwitcherController) {
+        "use strict";
+
+        describe("The view switcher controller", function () {
+            var mockScope,
+                controller;
+
+            beforeEach(function () {
+                mockScope = jasmine.createSpyObj("$scope", [ "$watch" ]);
+                controller = new ViewSwitcherController(mockScope);
+            });
+
+            it("watches for changes in applicable views", function () {
+                // The view capability is used by associated
+                // representations, so "view" in scope should always
+                // be the list of applicable views. The view switcher
+                // controller should be watching this.
+                expect(mockScope.$watch).toHaveBeenCalledWith(
+                    "view",
+                    jasmine.any(Function)
+                );
+            });
+
+            it("updates available options to reflect views", function () {
+                var views = [
+                    { key: "a", name: "View A" },
+                    { key: "b", name: "View B" },
+                    { key: "c", name: "View C" },
+                    { key: "d", name: "View D" }
+                ];
+                mockScope.$watch.mostRecentCall.args[1](views);
+                expect(mockScope.switcher.options).toEqual(views);
+            });
+
+            it("maintains the current selection when views change", function () {
+                var views = [
+                    { key: "a", name: "View A" },
+                    { key: "b", name: "View B" },
+                    { key: "c", name: "View C" },
+                    { key: "d", name: "View D" }
+                ];
+                mockScope.$watch.mostRecentCall.args[1](views);
+                mockScope.switcher.selected = views[1];
+
+                // Change the set of applicable views
+                mockScope.$watch.mostRecentCall.args[1]([
+                    { key: "a", name: "View A" },
+                    { key: "b", name: "View B" },
+                    { key: "x", name: "View X" }
+                ]);
+
+                // "b" is still in there, should remain selected
+                expect(mockScope.switcher.selected).toEqual(views[1]);
+            });
+
+            it("chooses a default if a selected view becomes inapplicable", function () {
+                var views = [
+                    { key: "a", name: "View A" },
+                    { key: "b", name: "View B" },
+                    { key: "c", name: "View C" },
+                    { key: "d", name: "View D" }
+                ];
+                mockScope.$watch.mostRecentCall.args[1](views);
+                mockScope.switcher.selected = views[1];
+
+                // Change the set of applicable views
+                mockScope.$watch.mostRecentCall.args[1]([
+                    { key: "a", name: "View A" },
+                    { key: "c", name: "View C" },
+                    { key: "x", name: "View X" }
+                ]);
+
+                // "b" is still in there, should remain selected
+                expect(mockScope.switcher.selected).not.toEqual(views[1]);
+            });
+
+        });
+    }
+);