/** * Copyright (c) 2016-present, RxJava Contributors. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License is * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See * the License for the specific language governing permissions and limitations under the License. */ package io.reactivex.internal.operators.maybe; import static org.junit.Assert.*; import org.junit.Test; import io.reactivex.Maybe; import io.reactivex.internal.fuseable.HasUpstreamMaybeSource; public class MaybeIsEmptySingleTest { @Test public void source() { Maybe<Integer> m = Maybe.just(1); assertSame(m, (((HasUpstreamMaybeSource<?>)m.isEmpty()).source())); } }