[Core] Complete spec for capailities

Complete specs for capabilities introduced in platform/core,
part of ongoing transition of this bundle. WTD-573.

platform/core/test/capabilities/PersistenceCapabilitySpec.js

@@ -9,6 +9,45 @@ define(
         "use strict";
 
         describe("The persistence capability", function () {
+            var mockPersistenceService,
+                mockDomainObject,
+                id = "object id",
+                model = { someKey: "some value"},
+                SPACE = "some space",
+                persistence;
+
+            beforeEach(function () {
+                mockPersistenceService = jasmine.createSpyObj(
+                    "persistenceService",
+                    [ "updateObject" ]
+                );
+                mockDomainObject = {
+                    getId: function () { return id; },
+                    getModel: function () { return model; }
+                };
+                persistence = new PersistenceCapability(
+                    mockPersistenceService,
+                    SPACE,
+                    mockDomainObject
+                );
+            });
+
+            it("makes a call to the persistence service when invoked", function () {
+                // Verify precondition; no call made during constructor
+                expect(mockPersistenceService.updateObject).not.toHaveBeenCalled();
+
+                persistence.persist();
+
+                expect(mockPersistenceService.updateObject).toHaveBeenCalledWith(
+                    SPACE,
+                    id,
+                    model
+                );
+            });
+
+            it("reports which persistence space an object belongs to", function () {
+                expect(persistence.getSpace()).toEqual(SPACE);
+            });
 
         });
     }