How to mock Pipe when testing Component (https://stackoverflow.com/a/56701741/2100126)

mock-pipe.ts

// If you want reusable util function for mocking pipes, you can try this option:

export function mockPipe(options: Pipe): Pipe {
    const metadata: Pipe = {
      name: options.name
    };

    return <any>Pipe(metadata)(class MockPipe {});
}
      
// ...

some-test.spec.ts

// And then just call this function inside the TestBed declarations array:

TestBed.configureTestingModule({
    declarations: [
        SomeComponent,
        mockPipe({ name: 'myPipe' }),
        mockPipe({ name: 'myOtherPipe' })
    ],
    // ...
}).compileComponents();

// ...