Function expectExperiment

test/unit/test-experiments.js:134–139

(storedString, experimentId)

  });

  function expectExperiment(storedString, experimentId) {
    resetExperimentTogglesForTesting(win);
    win.localStorage.setItem('amp-experiment-toggles', storedString);
    // eslint-disable-next-line chai-expect/missing-assertion
    return expect(isExperimentOn(win, /*OK*/ experimentId));
  }

  describe('with only cookie flag', () => {
    it('should return "off" with no cookies, malformed or empty', () => {