Menu
When I run ng test command in my angular project has error, it gives an error like that
10% building modules 1/1 modules 0 active04 12 2018 11:29:43.408:WARN [karma]: No captured browser, open http://localhost:9876/
04 12 2018 11:29:43.414:INFO [karma]: Karma v2.0.0 server started at http://0.0.0.0:9876/
04 12 2018 11:29:43.414:INFO [launcher]: Launching browser Chrome with unlimited concurrency
04 12 2018 11:29:43.418:INFO [launcher]: Starting browser Chrome
04 12 2018 11:29:53.540:WARN [karma]: No captured browser, open http://localhost:9876/
04 12 2018 11:29:53.777:INFO [Chrome 70.0.3538 (Mac OS X 10.14.1)]: Connected on socket SKF3rI13kIK0WCqqAAAA with id 32081204
Chrome 70.0.3538 (Mac OS X 10.14.1): Executed 95 of 191 SUCCESS (0 secs / 0.131 secs)
Chrome 70.0.3538 (Mac OS X 10.14.1) ERROR
{
"message": "An error was thrown in afterAll\n[object ErrorEvent] thrown",
"str": "An error was thrown in afterAll\n[object ErrorEvent] thrown"
}
Chrome 70.0.3538 (Mac OS X 10.14.1): Executed 96 of 191 ERROR (0 secs / 0.826 secs)
Chrome 70.0.3538 (Mac OS X 10.14.1) ERROR
{
"message": "An error was thrown in afterAll\n[object ErrorEvent] thrown",
"str": "An error was thrown in afterAll\n[object ErrorEvent] thrown"
Chrome 70.0.3538 (Mac OS X 10.14.1): Executed 96 of 191 ERROR (1.386 secs / 0.826 secs)
That is the karma result, every test was passed.
My package.json content
"devDependencies": {
"@angular/cli": "~1.7.0",
"@angular/compiler-cli": "^5.2.0",
"@angular/language-service": "^5.2.0",
"@types/jasmine": "~2.8.3",
"@types/jasminewd2": "~2.0.2",
"@types/node": "~6.0.60",
"codelyzer": "^4.0.1",
"jasmine-core": "~2.8.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~2.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "^1.2.1",
"karma-jasmine": "~1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.1.2",
"ts-node": "~4.1.0",
"tslint": "~5.9.1",
"typescript": "~2.5.3"
},
Thank you.
521
Fixtures have access to a debugElement , which will give you access to the internals of the component fixture. Change detection isn't done automatically, so you'll call detectChanges on a fixture to tell Angular to run change detection.
Jasmine is the default test framework used with Angular.
Introduction. Mocking is a great idea for testing Angular apps because it makes maintenance easier and helps reduce future bugs. There are a few complex tools, such as XUnit, for mocking an Angular CLI project. You can execute the mocking methods described in this guide only if you use vanilla Jasmine + Angular Testbed ...
A mock component in Angular tests can be created by MockComponent function. The mock component respects the interface of its original component, but all its methods are dummies. To create a mock component, simply pass its class into MockComponent function.
I found the solution, in my case with
afterAll(() => {
TestBed.resetTestingModule();
});
method all errors disappear, there is sample code below
describe('Component', () => {
let component: Component;
beforeEach((() => {
TestBed.configureTestingModule({
declarations: [Component]
})
.compileComponents();
}));
beforeEach(() => {
const fixture = TestBed.createComponent(Component);
component = fixture.componentInstance;
});
it('should have a defined component', () => {
expect(component).toBeDefined();
});
afterAll(() => {
TestBed.resetTestingModule();
});
});
afterEach(() => {
TestBed.resetTestingModule();
});
This cleared the error for me.
7
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
