geode-core/src/test/java/org/apache/geode/alerting/internal/spi/AlertingActionTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF 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 org.apache.geode.alerting.internal.spi;

import static org.apache.geode.alerting.internal.spi.AlertingAction.execute;
import static org.apache.geode.alerting.internal.spi.AlertingAction.isThreadAlerting;
import static org.apache.geode.alerting.internal.spi.AlertingAction.setThreadAlerting;
import static org.assertj.core.api.Assertions.assertThat;
import static org.hamcrest.Matchers.is;

import java.util.concurrent.atomic.AtomicBoolean;

import org.junit.After;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.ErrorCollector;

import org.apache.geode.test.junit.categories.AlertingTest;

/** Unit tests for {@link org.apache.geode.alerting.internal.spi.AlertingAction}. */
@Category(AlertingTest.class)
public class AlertingActionTest {

  @Rule
  public ErrorCollector errorCollector = new ErrorCollector();

  @After
  public void tearDown() {
    setThreadAlerting(false);
  }

  @Test
  public void isThreadAlertingIsFalseByDefault() {
    assertThat(isThreadAlerting()).isFalse();
  }

  @Test
  public void isThreadAlertingIsTrueWhileExecuting() {
    execute(() -> errorCollector.checkThat(isThreadAlerting(), is(true)));
  }

  @Test
  public void isThreadAlertingIsFalseAfterExecuting() {
    execute(() -> System.out.println("hi"));

    assertThat(isThreadAlerting()).isFalse();
  }

  @Test
  public void executeDoesNothingIfIsThreadAlertingIsTrue() {
    AtomicBoolean executed = new AtomicBoolean();
    setThreadAlerting(true);

    execute(() -> executed.set(true));

    assertThat(executed).isFalse();
  }
}