Function skipIOS

src/cdk/overlay/scroll/block-scroll-strategy.spec.ts:254–260

* Skips the specified test, if it is being executed on iOS. This is necessary, because * programmatic scrolling inside the Karma iframe doesn't work on iOS, which renders these * tests unusable. For example, something as basic as the following won't work: * ``` * window.scroll(0, 100);

(spec: Function)

   * @param spec Test to be executed or skipped.
   */
  function skipIOS(spec: Function) {
    return () => {
      if (!platform.IOS) {
        spec();
      }
    };
  }
});

/** Simple component that we can attach to the overlay. */