add tests and public api

projects/ngx-pwa-install/src/lib/ngx-pwa-install.component.spec.ts

@@ -1,25 +1,40 @@
-import { async, ComponentFixture, TestBed } from '@angular/core/testing';
-
+import { createHostFactory, SpectatorHost } from '@ngneat/spectator';
 import { NgxPwaInstallComponent } from './ngx-pwa-install.component';
+import { fakeAsync, tick } from '@angular/core/testing';
 
-describe('NgxPwaInstallComponent', () => {
-  let component: NgxPwaInstallComponent;
-  let fixture: ComponentFixture<NgxPwaInstallComponent>;
+function createEvent() {
+  const event = new CustomEvent('beforeinstallprompt');
+  let userChoiceResolve;
+  (event as any).userChoice = new Promise((resolve) => userChoiceResolve = resolve);
+  (event as any).prompt = () => {
+    userChoiceResolve({outcome: 'accepted'});
+  };
+  return event;
+}
 
-  beforeEach(async(() => {
-    TestBed.configureTestingModule({
-      declarations: [ NgxPwaInstallComponent ]
-    })
-    .compileComponents();
-  }));
+describe('NgxPwaInstallComponent', () => {
+  let spectator: SpectatorHost<NgxPwaInstallComponent>;
+  const createHost = createHostFactory(NgxPwaInstallComponent);
 
   beforeEach(() => {
-    fixture = TestBed.createComponent(NgxPwaInstallComponent);
-    component = fixture.componentInstance;
-    fixture.detectChanges();
+    spectator = createHost(`<ngx-pwa-install><button class="install-me">Install me</button></ngx-pwa-install>`);
   });
-
-  it('should create', () => {
-    expect(component).toBeTruthy();
+  it('should not display content until BeforeInstallPromptEvent fired', () => {
+    spectator.detectChanges();
+    expect(spectator.query('.install-me')).toBeNull();
+  });
+  it('should display content when BeforeInstallPromptEvent fired', () => {
+    window.dispatchEvent(createEvent());
+    spectator.detectChanges();
+    expect(spectator.query('.install-me')).not.toBeNull();
   });
+  it('should hide content when .install() called', fakeAsync(() => {
+    const event = createEvent();
+    window.dispatchEvent(event);
+    spectator.detectChanges();
+    spectator.component.install();
+    tick(0);
+    spectator.detectChanges();
+    expect(spectator.query('.install-me')).toBeNull();
+  }));
 });

projects/ngx-pwa-install/src/lib/ngx-pwa-install.module.spec.ts

@@ -0,0 +1,59 @@
+import { Component, ModuleWithProviders, NgModule, Type } from '@angular/core';
+import { createComponentFactory, Spectator } from '@ngneat/spectator';
+import { BeforeInstallPrompt, NgxPwaInstallModule } from '../public-api';
+
+@Component({
+  template: ''
+})
+class FakeComponent {
+}
+
+function configureComponentFactory(
+  targetModule: ModuleWithProviders<NgxPwaInstallModule> | Type<any>,
+  beforeInstallPromptFactory: () => Promise<void>) {
+  return createComponentFactory({
+    component: FakeComponent,
+    imports: [targetModule],
+    providers: [
+      {provide: BeforeInstallPrompt, useFactory: beforeInstallPromptFactory}
+    ]
+  });
+}
+
+describe('NgxPwaInstallModule', () => {
+  let spectator: Spectator<FakeComponent>;
+  let spyInit: jasmine.Spy;
+  const beforeInstallPromptProvider = {
+    init() {
+      return Promise.resolve();
+    }
+  };
+  const beforeInstallPromptFactory = () => beforeInstallPromptProvider.init();
+
+  describe('without .forRoot()', () => {
+    const createComponent = configureComponentFactory(NgxPwaInstallModule, beforeInstallPromptFactory);
+
+    beforeEach(() => {
+      spyInit = spyOn(beforeInstallPromptProvider, 'init');
+      spectator = createComponent();
+    });
+
+    it('should not setup window event listener', () => {
+      expect(spyInit).not.toHaveBeenCalled();
+    });
+  });
+  describe('with .forRoot()', () => {
+    const targetModule = NgxPwaInstallModule.forRoot();
+    const createComponent = configureComponentFactory(targetModule, beforeInstallPromptFactory);
+
+    beforeEach(() => {
+      spyInit = spyOn(beforeInstallPromptProvider, 'init');
+      spectator = createComponent();
+    });
+
+    it('should setup window event listener', () => {
+      expect(spyInit).toHaveBeenCalled();
+    });
+  });
+});
+

projects/ngx-pwa-install/src/public-api.ts

@@ -2,6 +2,5 @@
  * Public API Surface of ngx-pwa-install
  */
 
-export * from './lib/ngx-pwa-install.service';
-export * from './lib/ngx-pwa-install.component';
-export * from './lib/ngx-pwa-install.module';
+export { NgxPwaInstallModule } from './lib/ngx-pwa-install.module';
+export { BeforeInstallPrompt } from './lib/ngx-pwa-install.providers';