[Edit] Set key on represent

Set key on represent so that commit function can properly persist
configuration per object type.  Add tests to EditRepresenter

Fixes https://github.com/nasa/openmct/issues/1367

platform/commonUI/edit/bundle.js

@@ -374,7 +374,6 @@ define([
                 {
                     "implementation": EditRepresenter,
                     "depends": [
-                        "$q",
                         "$log"
                     ]
                 },

platform/commonUI/edit/src/representers/EditRepresenter.js

@@ -43,57 +43,51 @@ define(
          * @implements {Representer}
          * @constructor
          */
-        function EditRepresenter($q, $log, scope) {
+        function EditRepresenter($log, $scope) {
-            var self = this;
+            this.$log = $log;
-
+            this.$scope = $scope;
-            this.scope = scope;
-
-            // Mutate and persist a new version of a domain object's model.
-            function doMutate(model) {
-                var domainObject = self.domainObject;
-
-                // First, mutate; then, persist.
-                return $q.when(domainObject.useCapability("mutation", function () {
-                    return model;
-                }));
-            }
-
-            // Handle changes to model and/or view configuration
-            function commit(message) {
-                // Look up from scope; these will have been populated by
-                // mct-representation.
-                var model = scope.model,
-                    configuration = scope.configuration,
-                    domainObject = self.domainObject;
-
-                // Log the commit message
-                $log.debug([
-                    "Committing ",
-                    domainObject && domainObject.getModel().name,
-                    "(" + (domainObject && domainObject.getId()) + "):",
-                    message
-                ].join(" "));
-
-                // Update the configuration stored in the model, and persist.
-                if (domainObject) {
-                    // Configurations for specific views are stored by
-                    // key in the "configuration" field of the model.
-                    if (self.key && configuration) {
-                        model.configuration = model.configuration || {};
-                        model.configuration[self.key] = configuration;
-                    }
-                    doMutate(model);
-                }
-            }
-
-            // Place the "commit" method in the scope
-            scope.commit = commit;
 
+            this.$scope.commit = this.commit.bind(this);
         }
 
+        /**
+         * Commit any changes made to the in-scope model to the domain object.
+         * Also commits any changes made to $scope.configuration to the proper
+         * configuration value for the current representation.
+         *
+         * @param {String} message a message to log with the commit message.
+         */
+        EditRepresenter.prototype.commit = function (message) {
+            var model = this.$scope.model,
+                configuration = this.$scope.configuration,
+                domainObject = this.domainObject;
+
+            this.$log.debug([
+                "Committing ",
+                domainObject && domainObject.getModel().name,
+                "(" + (domainObject && domainObject.getId()) + "):",
+                message
+            ].join(" "));
+
+            if (this.domainObject) {
+                if (this.key && configuration) {
+                    model.configuration = model.configuration || {};
+                    model.configuration[this.key] = configuration;
+                }
+                domainObject.useCapability('mutation', function () {
+                    return model;
+                });
+            }
+        };
+
         // Handle a specific representation of a specific domain object
         EditRepresenter.prototype.represent = function (representation, representedObject) {
             this.domainObject = representedObject;
+            if (representation) {
+                this.key = representation.key;
+            } else {
+                delete this.key;
+            }
         };
 
         // Respond to the destruction of the current representation.

platform/commonUI/edit/test/representers/EditRepresenterSpec.js

@@ -0,0 +1,89 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT 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 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.
+ *****************************************************************************/
+
+define([
+    '../../src/representers/EditRepresenter'
+], function (
+    EditRepresenter
+) {
+    describe('EditRepresenter', function () {
+        var $log,
+            $scope,
+            representer;
+
+
+        beforeEach(function () {
+            $log = jasmine.createSpyObj('$log', ['debug']);
+            $scope = {};
+            representer = new EditRepresenter($log, $scope);
+        });
+
+        it('injects a commit function in scope', function () {
+            expect($scope.commit).toEqual(jasmine.any(Function));
+        });
+
+        describe('representation', function () {
+            var domainObject,
+                representation;
+
+            beforeEach(function () {
+                domainObject = jasmine.createSpyObj('domainObject', [
+                    'getId',
+                    'getModel',
+                    'useCapability'
+                ]);
+
+                domainObject.getId.andReturn('anId');
+                domainObject.getModel.andReturn({name: 'anObject'});
+
+                representation = {
+                    key: 'someRepresentation'
+                };
+                $scope.model = {name: 'anotherName'};
+                $scope.configuration = {some: 'config'};
+                representer.represent(representation, domainObject);
+            });
+
+            it('logs a message when commiting', function () {
+                $scope.commit('Test Message');
+                expect($log.debug)
+                    .toHaveBeenCalledWith('Committing  anObject (anId): Test Message');
+            });
+
+            it('mutates the object when committing', function () {
+                $scope.commit('Test Message');
+
+                expect(domainObject.useCapability)
+                    .toHaveBeenCalledWith('mutation', jasmine.any(Function));
+
+                var mutateValue = domainObject.useCapability.calls[0].args[1]();
+
+                expect(mutateValue.configuration.someRepresentation)
+                    .toEqual({some: 'config'});
+                expect(mutateValue.name).toEqual('anotherName');
+            });
+
+        });
+
+
+    });
+});