refactor: move 'Workbench.forRoot guard' spec into spec directory and…

… simplify spec

Closes #43

projects/scion/workbench/src/lib/spec/workbench.module.spec.ts

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2018 Swiss Federal Railways
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ *  SPDX-License-Identifier: EPL-2.0
+ */
+
+import { fakeAsync, inject, TestBed, tick } from '@angular/core/testing';
+import { NgModule, NgModuleFactoryLoader } from '@angular/core';
+import { RouterTestingModule, SpyNgModuleFactoryLoader } from '@angular/router/testing';
+import { Router } from '@angular/router';
+import { WorkbenchModule } from '../workbench.module';
+
+fdescribe('WorkbenchModule', () => {
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        WorkbenchModule.forRoot(),
+        RouterTestingModule.withRoutes([{path: 'lazy-module-forroot', loadChildren: './lazy-forroot.module#LazyForRootModule'}]),
+        RouterTestingModule.withRoutes([{path: 'lazy-module-forchild', loadChildren: './lazy-forchild.module#LazyForChildModule'}]),
+      ]
+    });
+  });
+
+  it('throws an error when forRoot() is used in a lazy context', fakeAsync(inject([Router, NgModuleFactoryLoader], async (router: Router, loader: SpyNgModuleFactoryLoader) => {
+    // Use forRoot() in a lazy context
+    @NgModule({
+      imports: [
+        WorkbenchModule.forRoot()
+      ]
+    })
+    class LazyForRootModule {
+    }
+
+    // Use forChild() in a lazy context
+    @NgModule({
+      imports: [
+        WorkbenchModule.forChild()
+      ]
+    })
+    class LazyForChildModule {
+    }
+
+    loader.stubbedModules = {
+      './lazy-forroot.module#LazyForRootModule': LazyForRootModule,
+      './lazy-forchild.module#LazyForChildModule': LazyForChildModule,
+    };
+
+    // Navigate to LazyForRootModule
+    expect(() => {
+      router.navigate(['lazy-module-forroot']).then();
+      tick();
+    }).toThrowError(/ModuleForRootError/);
+
+    // Navigate to LazyForChildModule
+    expect(() => {
+      router.navigate(['lazy-module-forchild']).then();
+      tick();
+    }).not.toThrowError(/ModuleForRootError/);
+  })));
+});

projects/scion/workbench/src/lib/workbench.module.ts

@@ -233,7 +233,7 @@ export class WorkbenchModule {
 
 export function provideForRootGuard(workbench: WorkbenchService): any {
   if (workbench) {
-    throw new Error('WorkbenchModule.forRoot() called twice. Lazy loaded modules should use WorkbenchModule.forChild() instead.');
+    throw new Error('[ModuleForRootError] WorkbenchModule.forRoot() called twice. Lazy loaded modules should use WorkbenchModule.forChild() instead.');
   }
   return 'guarded';
 }