Rx\Functional\Operator\DistinctUntilChangedTest::distinct_until_changed_never PHP Method

    public function distinct_until_changed_never()
    {
        $results = $this->scheduler->startWithCreate(function () {
            $o = new EmptyObservable();
            return Observable::never()->distinctUntilChanged();
        });
        $this->assertMessages([], $results->getMessages());
    }