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package com.xtremelabs.robolectric.util;
import com.xtremelabs.robolectric.Robolectric;
import com.xtremelabs.robolectric.WithTestDefaultsRunner;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
@RunWith(WithTestDefaultsRunner.class)
public class RobolectricBackgroundExecutorServiceTest {
private Transcript transcript;
private RobolectricBackgroundExecutorService executorService;
private Runnable runnable;
@Before public void setUp() throws Exception {
transcript = new Transcript();
executorService = new RobolectricBackgroundExecutorService();
Robolectric.getBackgroundScheduler().pause();
runnable = new Runnable() {
@Override public void run() {
transcript.add("background event ran");
}
};
}
@Test
public void execute_shouldRunStuffOnBackgroundThread() throws Exception {
executorService.execute(runnable);
transcript.assertNoEventsSoFar();
Robolectric.runBackgroundTasks();
transcript.assertEventsSoFar("background event ran");
}
@Test
public void submitRunnable_shouldRunStuffOnBackgroundThread() throws Exception {
Future<String> future = executorService.submit(runnable, "foo");
transcript.assertNoEventsSoFar();
assertFalse(future.isDone());
Robolectric.runBackgroundTasks();
transcript.assertEventsSoFar("background event ran");
assertTrue(future.isDone());
assertEquals("foo", future.get());
}
@Test
public void submitCallable_shouldRunStuffOnBackgroundThread() throws Exception {
Future<String> future = executorService.submit(new Callable<String>() {
@Override public String call() throws Exception {
runnable.run();
return "foo";
}
});
transcript.assertNoEventsSoFar();
assertFalse(future.isDone());
Robolectric.runBackgroundTasks();
transcript.assertEventsSoFar("background event ran");
assertTrue(future.isDone());
assertEquals("foo", future.get());
}
}
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