Good-test.spec.ts

		...
    fixture = TestBed.createComponent(DatatableFiltersComponent); // component preprerations
		component = fixture.debugElement.componentInstance;
		component.filterOptions = createFilterOptions();
		component.filtersState = [];
	});

	it('should create pill', async () => { // checking the simplest behaviour
		const filterValue = ["a"];
		const demoFilter = createFilter(EXAMPLE_FILTER_NAME, filterValue);
		expect(component.pillsSubject.value.length).toEqual(0);
		component.filtersState = [...component.currentFiltersState, demoFilter];
		expect(component.pillsSubject.value.length).toEqual(demoFilter.values.length);
	});

	it('should create 2 pills of same filter', async () => { // we should have 2 search pills, one for each filter
		const demoFilter = createFilter(EXAMPLE_FILTER_NAME, EXMAPLE_FILTER_VALUES);
		expect(component.pillsSubject.value.length).toEqual(0);
		component.filtersState = [...component.currentFiltersState, demoFilter];
		expect(component.pillsSubject.value.length).toEqual(demoFilter.values.length); 
	});

...
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