forked from kubernetes-client/java
/
LeaderElectingControllerTest.java
96 lines (80 loc) · 3.17 KB
/
LeaderElectingControllerTest.java
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/*
Copyright 2020 The Kubernetes Authors.
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.kubernetes.client.extended.controller;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import io.kubernetes.client.extended.leaderelection.LeaderElectionConfig;
import io.kubernetes.client.extended.leaderelection.LeaderElectionRecord;
import io.kubernetes.client.extended.leaderelection.LeaderElector;
import io.kubernetes.client.extended.leaderelection.Lock;
import io.kubernetes.client.openapi.ApiException;
import java.net.HttpURLConnection;
import java.time.Duration;
import java.util.concurrent.atomic.AtomicReference;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
@RunWith(MockitoJUnitRunner.class)
public class LeaderElectingControllerTest {
@Mock private Controller mockController;
@Mock private Lock mockLock;
private final int stepCooldownIntervalInMillis = 2000;
private void cooldown() {
try {
Thread.sleep(stepCooldownIntervalInMillis);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
@Test
public void testLeaderElectingController() throws ApiException {
AtomicReference<LeaderElectionRecord> record = new AtomicReference<>();
record.set(new LeaderElectionRecord());
when(mockLock.identity()).thenReturn("foo");
when(mockLock.get())
.thenThrow(
new ApiException("Record Not Found", HttpURLConnection.HTTP_NOT_FOUND, null, null))
.thenReturn(record.get());
doAnswer(
invocationOnMock -> {
record.set(invocationOnMock.getArgument(0));
return true;
})
.when(mockLock)
.create(any());
doReturn(false).when(mockLock).update(any());
LeaderElectingController leaderElectingController =
new LeaderElectingController(
new LeaderElector(
new LeaderElectionConfig(
mockLock,
Duration.ofMillis(300),
Duration.ofMillis(200),
Duration.ofMillis(100))),
mockController);
Thread controllerThread = new Thread(leaderElectingController::run);
controllerThread.start();
cooldown();
controllerThread.interrupt();
verify(mockLock, times(1)).create(any());
verify(mockLock, atLeastOnce()).update(any());
verify(mockController, times(1)).run();
verify(mockController, times(1)).shutdown();
}
}