Add test cases for ImmediateExecutor. (#10060)

Motivation:

ImmediateExecutor needs more test cases.

Modification:

Add several test cases for ImmediateExecutor.

Result:

Improve test coverage slightly.
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feijermu 2020-02-26 18:08:36 +08:00 committed by GitHub
parent 9ae782d632
commit f451295c75
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/*
* Copyright 2020 The Netty Project
*
* The Netty Project licenses this file to you 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.netty.util.concurrent;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.concurrent.FutureTask;
import org.junit.Test;
public class ImmediateExecutorTest {
@Test(expected = NullPointerException.class)
public void testExecuteNullRunnable() {
ImmediateExecutor.INSTANCE.execute(null);
}
@Test
public void testExecuteNonNullRunnable() throws Exception {
FutureTask<Void> task = new FutureTask<Void>(new Runnable() {
@Override
public void run() {
// NOOP
}
}, null);
ImmediateExecutor.INSTANCE.execute(task);
assertTrue(task.isDone());
assertFalse(task.isCancelled());
assertNull(task.get());
}
}