Function checkIsElement

src/cdk/testing/tests/cross-environment-tests.ts:713–718

(result: ComponentHarness | TestElement, selector?: string)

}

export async function checkIsElement(result: ComponentHarness | TestElement, selector?: string) {
  expect(result instanceof ComponentHarness).toBe(false);
  if (selector) {
    expect(await (result as TestElement).matchesSelector(selector)).toBe(true);
  }
}

export async function checkIsHarness<T extends ComponentHarness>(
  result: ComponentHarness | TestElement,