Method getHarnessAtIndex

src/cdk/testing/component-harness.ts:131–131

* Searches for an instance of the component corresponding to the given harness type under the * `HarnessLoader`'s root element, and returns a `ComponentHarness` for the instance on the page * at the given index. If no matching component exists at that index, an error is thrown. * @param que

(query: HarnessQuery<T>, index: number)

   * @throws If a matching component instance can't be found at the given index.
   */
  getHarnessAtIndex<T extends ComponentHarness>(query: HarnessQuery<T>, index: number): Promise<T>;

  /**
   * Searches for all instances of the component corresponding to the given harness type under the