Function matchDebug

packages/core/test/render3/utils.ts:62–77

(expected: T)

 * @param expected Expected value.
 */
export function matchDebug<T>(expected: T): any {
  const matcher = function () {};
  let actual: any = matchDebug;

  matcher.asymmetricMatch = function (objectWithDebug: any, matchersUtil: jasmine.MatchersUtil) {
    return matchersUtil.equals((actual = objectWithDebug.debug), expected);
  };
  matcher.jasmineToString = function (pp: (value: any) => string) {
    if (actual === matchDebug) {
      // `asymmetricMatch` never got called hence no error to display
      return '';
    }
    return buildFailureMessage(actual, expected, pp);
  };
  return matcher;
}

export function buildFailureMessage(
  actual: any,