feat: configureJestSetup

Author: timdeschryver

projects/testing-library/src/jest-utils/configure-test-suite.ts

@@ -0,0 +1,23 @@
+import { TestBed, getTestBed, ComponentFixture } from '@angular/core/testing';
+import 'jest';
+
+// Ref: https://github.com/angular/angular/issues/12409
+export function configureJestSetup() {
+  const testBedApi: any = getTestBed();
+  const originReset = TestBed.resetTestingModule;
+
+  beforeAll(() => {
+    TestBed.resetTestingModule();
+    TestBed.resetTestingModule = () => TestBed;
+  });
+
+  afterEach(() => {
+    testBedApi._activeFixtures.forEach((fixture: ComponentFixture<any>) => fixture.destroy());
+    testBedApi._instantiated = false;
+  });
+
+  afterAll(() => {
+    TestBed.resetTestingModule = originReset;
+    TestBed.resetTestingModule();
+  });
+}

projects/testing-library/src/jest-utils/index.ts

@@ -0,0 +1 @@
+export * from './configure-test-suite';

projects/testing-library/src/public_api.ts

@@ -4,4 +4,5 @@
 
 export * from './lib/models';
 export * from './lib/testing-library';
+export * from './jest-utils';
 export * from 'dom-testing-library';

src/app/app.component.spec.ts

@@ -1,5 +1,7 @@
 import { AppComponent } from './app.component';
-import { createComponent } from '@angular-extensions/testing-library';
+import { createComponent, configureJestSetup } from '@angular-extensions/testing-library';
+
+configureJestSetup();
 
 test(`matches snapshot`, async () => {
   const { container } = await createComponent('<app-root></app-root>', {