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ColdExample.java
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ColdExample.java
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/*******************************************************************************
* Copyright (c) 2015 Christos Froussios
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*******************************************************************************/
package itrx.chapter3.hotandcold;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import rx.Observable;
import rx.observers.TestSubscriber;
import rx.schedulers.Schedulers;
import rx.schedulers.TestScheduler;
public class ColdExample {
public void example() throws InterruptedException {
Observable<Long> cold =
Observable
.interval(200, TimeUnit.MILLISECONDS)
.take(5);
cold.subscribe(i -> System.out.println("First: " + i));
Thread.sleep(500);
cold.subscribe(i -> System.out.println("Second: " + i));
// First: 0
// First: 1
// First: 2
// Second: 0
// First: 3
// Second: 1
// First: 4
// Second: 2
// Second: 3
// Second: 4
}
//
// Test
//
@Test
public void test() {
TestScheduler scheduler = Schedulers.test();
TestSubscriber<Long> tester1 = new TestSubscriber<>();
TestSubscriber<Long> tester2 = new TestSubscriber<>();
Observable<Long> cold =
Observable
.interval(200, TimeUnit.MILLISECONDS, scheduler)
.take(5);
cold.subscribe(tester1);
tester1.assertReceivedOnNext(Arrays.asList());
tester2.assertReceivedOnNext(Arrays.asList());
scheduler.advanceTimeTo(500, TimeUnit.MILLISECONDS);
cold.subscribe(tester2);
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L));
tester2.assertReceivedOnNext(Arrays.asList());
scheduler.advanceTimeTo(1000, TimeUnit.MILLISECONDS);
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L, 3L, 4L));
tester2.assertReceivedOnNext(Arrays.asList(0L, 1L));
scheduler.advanceTimeTo(1500, TimeUnit.MILLISECONDS);
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L, 3L, 4L));
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L, 3L, 4L));
}
}