add unit tests

src/app/modules/presentation/select/select.component.spec.ts

@@ -0,0 +1,73 @@
+import {ComponentFixture, TestBed} from '@angular/core/testing';
+import {Router} from '@angular/router';
+import {of} from 'rxjs';
+import {GlobalSettingsService} from '../../../services/global-settings.service';
+import {ShowService} from '../../shows/services/show.service';
+import {SelectComponent} from './select.component';
+
+describe('SelectComponent', () => {
+  let component: SelectComponent;
+  let fixture: ComponentFixture<SelectComponent>;
+  let showServiceSpy: jasmine.SpyObj<ShowService>;
+  let globalSettingsServiceSpy: jasmine.SpyObj<GlobalSettingsService>;
+  let routerSpy: jasmine.SpyObj<Router>;
+
+  beforeEach(async () => {
+    showServiceSpy = jasmine.createSpyObj<ShowService>('ShowService', ['list$', 'update$']);
+    globalSettingsServiceSpy = jasmine.createSpyObj<GlobalSettingsService>('GlobalSettingsService', ['set']);
+    routerSpy = jasmine.createSpyObj<Router>('Router', ['navigateByUrl']);
+
+    showServiceSpy.list$.and.returnValue(
+      of([
+        {id: 'older', date: {toDate: () => new Date('2025-12-15T00:00:00Z')}},
+        {id: 'recent-a', date: {toDate: () => new Date('2026-03-01T00:00:00Z')}},
+        {id: 'recent-b', date: {toDate: () => new Date('2026-02-20T00:00:00Z')}},
+      ] as never)
+    );
+    showServiceSpy.update$.and.resolveTo();
+    globalSettingsServiceSpy.set.and.resolveTo();
+    routerSpy.navigateByUrl.and.resolveTo(true);
+
+    await TestBed.configureTestingModule({
+      imports: [SelectComponent],
+      providers: [
+        {provide: ShowService, useValue: showServiceSpy},
+        {provide: GlobalSettingsService, useValue: globalSettingsServiceSpy},
+        {provide: Router, useValue: routerSpy},
+      ],
+    }).compileComponents();
+
+    fixture = TestBed.createComponent(SelectComponent);
+    component = fixture.componentInstance;
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should become visible on init', () => {
+    component.ngOnInit();
+
+    expect(component.visible).toBeTrue();
+  });
+
+  it('should expose recent shows sorted descending by date', done => {
+    component.shows$.subscribe(shows => {
+      expect(showServiceSpy.list$).toHaveBeenCalledWith(true);
+      expect(shows.map(show => show.id)).toEqual(['recent-a', 'recent-b']);
+      done();
+    });
+  });
+
+  it('should persist the selected show, trigger presentation reset and navigate', async () => {
+    const show = {id: 'show-1'} as never;
+    component.visible = true;
+
+    await component.selectShow(show);
+
+    expect(component.visible).toBeFalse();
+    expect(globalSettingsServiceSpy.set).toHaveBeenCalledWith({currentShow: 'show-1'});
+    expect(showServiceSpy.update$).toHaveBeenCalledWith('show-1', {presentationSongId: 'title'});
+    expect(routerSpy.navigateByUrl).toHaveBeenCalledWith('/presentation/remote');
+  });
+});