59334: added validation

src/app/shared/comcol-forms/comcol-form/comcol-form.component.html

@@ -1,3 +1,3 @@
 <ds-form *ngIf="formModel"
          [formId]="'comcol-form-id'"
-         [formModel]="formModel" (submitForm)="onSubmit()"></ds-form>
+         [formModel]="formModel" (submitForm)="onSubmit()" (cancel)="onCancel()"></ds-form>

src/app/shared/comcol-forms/comcol-form/comcol-form.component.spec.ts

@@ -50,10 +50,7 @@ describe('ComColFormComponent', () => {
   ];
 
   /* tslint:disable:no-empty */
-  const locationStub = {
-    back: () => {
-    }
-  };
+  const locationStub = jasmine.createSpyObj('location', ['back']);
   /* tslint:enable:no-empty */
 
   beforeEach(async(() => {
@@ -112,4 +109,11 @@ describe('ComColFormComponent', () => {
       );
     })
   });
+
+  describe('onCancel', () => {
+    it('should call the back method on the Location service', () => {
+        comp.onCancel();
+        expect(locationStub.back).toHaveBeenCalled();
+    });
+  });
 });

src/app/shared/comcol-forms/comcol-form/comcol-form.component.ts

@@ -112,4 +112,8 @@ export class ComColFormComponent<T extends DSpaceObject> implements OnInit {
       }
     );
   }
+
+  onCancel() {
+    this.location.back();
+  }
 }