Function assertArrowKeyInteractionInRtl

src/material/stepper/stepper.spec.ts:1727–1745

Asserts that arrow key direction works correctly in RTL mode.

(
  fixture: ComponentFixture<{stepper: MatStepper}>,
  stepHeaders: DebugElement[],
)

/** Asserts that arrow key direction works correctly in RTL mode. */
function assertArrowKeyInteractionInRtl(
  fixture: ComponentFixture<{stepper: MatStepper}>,
  stepHeaders: DebugElement[],
) {
  const stepper = fixture.componentInstance.stepper;
  expect(stepper._getFocusIndex()).toBe(0);

  let stepHeaderEl = stepHeaders[0].nativeElement;
  dispatchKeyboardEvent(stepHeaderEl, 'keydown', LEFT_ARROW);
  fixture.detectChanges();

  expect(stepper._getFocusIndex()).toBe(1);

  stepHeaderEl = stepHeaders[1].nativeElement;
  dispatchKeyboardEvent(stepHeaderEl, 'keydown', RIGHT_ARROW);
  fixture.detectChanges();

  expect(stepper._getFocusIndex()).toBe(0);
}

/** Asserts that keyboard interaction works correctly when the user is pressing a modifier key. */
function assertSelectKeyWithModifierInteraction(