<input
    id="radio-{{geo.id}}"
    name="radio-geos"
    type="radio"
    [value]="geo.value"
    [(ngModel)]="selectedGeo">

it('should select the US Home Region', (done) => {
        // Arrange
        const component = TestBed.createComponent(regionComponent);

        // Act
        component.detectChanges();
        const usGeoRadioButton = component.debugElement.query(By.css('#radio-0'));

        usGeoRadioButton.triggerEventHandler('click', null);
        component.detectChanges();
        const selectedGeo = component.componentInstance.selectedGeo;

        // Assert
        component.whenStable().then(() => {
            expect(selectedGeo).toBe('US');
            done();
        });
    });