/**
 * 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.single;

import org.junit.Test;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;

import io.reactivex.Single;
import io.reactivex.functions.Consumer;
import io.reactivex.schedulers.TestScheduler;

import static org.junit.Assert.assertEquals;

public class SingleTimerTest {
    @Test
    public void timer() {
        final TestScheduler testScheduler = new TestScheduler();

        final AtomicLong atomicLong = new AtomicLong();
        Single.timer(2, TimeUnit.SECONDS, testScheduler).subscribe(new Consumer<Long>() {
            @Override
            public void accept(final Long value) throws Exception {
                atomicLong.incrementAndGet();
            }
        });

        assertEquals(0, atomicLong.get());

        testScheduler.advanceTimeBy(1, TimeUnit.SECONDS);

        assertEquals(0, atomicLong.get());

        testScheduler.advanceTimeBy(1, TimeUnit.SECONDS);

        assertEquals(1, atomicLong.get());
    }
}
