Tests that pure pipes are only invoked when their input changes
Tests that pure pipes are only invoked when their input changes

PiperOrigin-RevId: 173939378

chalin/angular2,kevmoo/angular,chalin/angular2,matanlurey/angular,kevmoo/angular,angulardart/angular,chalin/angular2,kevmoo/angular,matanlurey/angular,matanlurey/angular,angulardart/angular,angulardart/angular