hazelcast-master/hazelcast/src/test/java/com/hazelcast/internal/cluster/impl/ClusterStateChangeTest.java
/*
 * Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
 *
 * 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 com.hazelcast.internal.cluster.impl;

import com.hazelcast.cluster.ClusterState;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.ParallelJVMTest;
import com.hazelcast.test.annotation.QuickTest;
import com.hazelcast.version.Version;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import static com.hazelcast.test.HazelcastTestSupport.assumeDifferentHashCodes;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;

@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelJVMTest.class})
public class ClusterStateChangeTest {

    private ClusterStateChange clusterStateChange;
    private ClusterStateChange clusterStateChangeSameAttributes;
    private ClusterStateChange clusterStateChangeOtherType;
    private ClusterStateChange clusterStateChangeOtherNewState;

    @Before
    public void setUp() {
        clusterStateChange = ClusterStateChange.from(ClusterState.ACTIVE);
        clusterStateChangeSameAttributes = ClusterStateChange.from(ClusterState.ACTIVE);
        clusterStateChangeOtherType = ClusterStateChange.from(Version.UNKNOWN);
        clusterStateChangeOtherNewState = ClusterStateChange.from(ClusterState.FROZEN);
    }

    @Test
    public void testGetType() {
        assertEquals(ClusterState.class, clusterStateChange.getType());
        assertEquals(ClusterState.class, clusterStateChangeSameAttributes.getType());
        assertEquals(Version.class, clusterStateChangeOtherType.getType());
        assertEquals(ClusterState.class, clusterStateChangeOtherNewState.getType());
    }

    @Test
    public void testGetNewState() {
        assertEquals(ClusterState.ACTIVE, clusterStateChange.getNewState());
        assertEquals(ClusterState.ACTIVE, clusterStateChangeSameAttributes.getNewState());
        assertEquals(Version.UNKNOWN, clusterStateChangeOtherType.getNewState());
        assertEquals(ClusterState.FROZEN, clusterStateChangeOtherNewState.getNewState());
    }

    @Test
    public void testEquals() {
        assertEquals(clusterStateChange, clusterStateChange);
        assertEquals(clusterStateChange, clusterStateChangeSameAttributes);

        assertNotEquals(null, clusterStateChange);
        assertNotEquals(new Object(), clusterStateChange);

        assertNotEquals(clusterStateChange, clusterStateChangeOtherType);
        assertNotEquals(clusterStateChange, clusterStateChangeOtherNewState);
    }

    @Test
    public void testHashCode() {
        assertEquals(clusterStateChange.hashCode(), clusterStateChange.hashCode());
        assertEquals(clusterStateChange.hashCode(), clusterStateChangeSameAttributes.hashCode());

        assumeDifferentHashCodes();
        assertNotEquals(clusterStateChange.hashCode(), clusterStateChangeOtherType.hashCode());
        assertNotEquals(clusterStateChange.hashCode(), clusterStateChangeOtherNewState.hashCode());
    }
}
