Function assignAndAssert

src/material/datepicker/date-range-input.spec.ts:656–663

(start: Date, end: Date)

  it('should preserve the values when assigning both together through ngModel', () => {
    const assignAndAssert = (start: Date, end: Date) => {
      fixture.componentInstance.start = start;
      fixture.componentInstance.end = end;
      fixture.changeDetectorRef.markForCheck();
      fixture.detectChanges();
      expect(fixture.componentInstance.start).toBe(start);
      expect(fixture.componentInstance.end).toBe(end);
    };

    const fixture = createComponent(RangePickerNgModel);
    fixture.detectChanges();