add unit tests

src/app/modules/shows/edit/edit.component.spec.ts

@@ -0,0 +1,82 @@
+import {ComponentFixture, TestBed} from '@angular/core/testing';
+import {ActivatedRoute, Router} from '@angular/router';
+import {Timestamp} from '@angular/fire/firestore';
+import {of} from 'rxjs';
+import {ShowDataService} from '../services/show-data.service';
+import {ShowService} from '../services/show.service';
+import {EditComponent} from './edit.component';
+
+describe('EditComponent', () => {
+  let component: EditComponent;
+  let fixture: ComponentFixture<EditComponent>;
+  let showServiceSpy: jasmine.SpyObj<ShowService>;
+  let showDataServiceStub: Pick<ShowDataService, 'list$'>;
+  let routerSpy: jasmine.SpyObj<Router>;
+
+  beforeEach(async () => {
+    showServiceSpy = jasmine.createSpyObj<ShowService>('ShowService', ['read$', 'update$']);
+    showDataServiceStub = {list$: of([] as never)};
+    routerSpy = jasmine.createSpyObj<Router>('Router', ['navigateByUrl']);
+
+    showServiceSpy.read$.and.returnValue(
+      of({
+        id: 'show-1',
+        showType: 'service-worship',
+        date: {toDate: () => new Date('2026-03-10T00:00:00Z')},
+      } as never)
+    );
+    showServiceSpy.update$.and.resolveTo();
+    routerSpy.navigateByUrl.and.resolveTo(true);
+
+    await TestBed.configureTestingModule({
+      imports: [EditComponent],
+      providers: [
+        {provide: ShowService, useValue: showServiceSpy},
+        {provide: ShowDataService, useValue: showDataServiceStub},
+        {provide: Router, useValue: routerSpy},
+        {provide: ActivatedRoute, useValue: {params: of({showId: 'show-1'})}},
+      ],
+    }).compileComponents();
+
+    fixture = TestBed.createComponent(EditComponent);
+    component = fixture.componentInstance;
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should load the current show into the form on init', () => {
+    component.ngOnInit();
+
+    expect(showServiceSpy.read$).toHaveBeenCalledWith('show-1');
+    expect(component.form.value.id).toBe('show-1');
+    expect(component.form.value.showType).toBe('service-worship');
+    expect(component.form.value.date).toEqual(new Date('2026-03-10T00:00:00Z'));
+  });
+
+  it('should not save when the form is invalid', async () => {
+    component.form.setValue({id: null, date: null, showType: null});
+
+    await component.onSave();
+
+    expect(showServiceSpy.update$).not.toHaveBeenCalled();
+    expect(routerSpy.navigateByUrl).not.toHaveBeenCalled();
+  });
+
+  it('should update the show and navigate back to the detail page', async () => {
+    const date = new Date('2026-03-11T00:00:00Z');
+    const firestoreTimestamp = {seconds: 1} as never;
+    spyOn(Timestamp, 'fromDate').and.returnValue(firestoreTimestamp);
+    component.form.setValue({id: 'show-1', date, showType: 'home-group'});
+
+    await component.onSave();
+
+    expect(Timestamp.fromDate).toHaveBeenCalledWith(date);
+    expect(showServiceSpy.update$).toHaveBeenCalledWith('show-1', {
+      date: firestoreTimestamp,
+      showType: 'home-group',
+    } as never);
+    expect(routerSpy.navigateByUrl).toHaveBeenCalledWith('/shows/show-1');
+  });
+});

src/app/modules/shows/services/docx.service.spec.ts

@@ -1,5 +1,5 @@
 import {TestBed} from '@angular/core/testing';
-
+import {Packer} from 'docx';
 import {DocxService} from './docx.service';
 
 describe('DocxService', () => {
@@ -13,4 +13,37 @@ describe('DocxService', () => {
   it('should be created', () => {
     void expect(service).toBeTruthy();
   });
+
+  it('should not try to save a document when the required data cannot be prepared', async () => {
+    const prepareDataSpy = spyOn<any>(service, 'prepareData').and.resolveTo(null);
+    const saveAsSpy = spyOn<any>(service, 'saveAs');
+
+    await service.create('show-1');
+
+    expect(prepareDataSpy).toHaveBeenCalledWith('show-1');
+    expect(saveAsSpy).not.toHaveBeenCalled();
+  });
+
+  it('should build and save a docx file when all data is available', async () => {
+    const blob = new Blob(['docx']);
+    const prepareDataSpy = spyOn<any>(service, 'prepareData').and.resolveTo({
+      show: {
+        showType: 'service-worship',
+        date: {toDate: () => new Date('2026-03-10T00:00:00Z')},
+      },
+      songs: [],
+      user: {name: 'Benjamin'},
+      config: {ccliLicenseId: '12345'},
+    });
+    const prepareNewDocumentSpy = spyOn<any>(service, 'prepareNewDocument').and.returnValue({doc: true});
+    const saveAsSpy = spyOn<any>(service, 'saveAs');
+    spyOn(Packer, 'toBlob').and.resolveTo(blob);
+
+    await service.create('show-1', {copyright: true});
+
+    expect(prepareDataSpy).toHaveBeenCalledWith('show-1');
+    expect(prepareNewDocumentSpy).toHaveBeenCalled();
+    expect(Packer.toBlob).toHaveBeenCalledWith({doc: true} as never);
+    expect(saveAsSpy).toHaveBeenCalledWith(blob, jasmine.stringMatching(/\.docx$/));
+  });
 });