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path: root/feature-pooling-dmaap/src/test/java/org/onap/policy/drools/pooling/state/IdleStateTest.java
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/*
 * ============LICENSE_START=======================================================
 * ONAP
 * ================================================================================
 * Copyright (C) 2018, 2020 AT&T Intellectual Property. 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.policy.drools.pooling.state;

import static org.junit.Assert.assertNull;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.junit.Before;
import org.junit.Test;
import org.onap.policy.drools.pooling.message.BucketAssignments;
import org.onap.policy.drools.pooling.message.Heartbeat;
import org.onap.policy.drools.pooling.message.Identification;
import org.onap.policy.drools.pooling.message.Leader;
import org.onap.policy.drools.pooling.message.Offline;
import org.onap.policy.drools.pooling.message.Query;

public class IdleStateTest extends SupportBasicStateTester {

    private IdleState state;

    /**
     * Setup.
     */
    @Before
    public void setUp() throws Exception {
        super.setUp();

        state = new IdleState(mgr);
    }

    @Test
    public void testProcessHeartbeat() {
        assertNull(state.process(new Heartbeat(PREV_HOST, 0L)));
        verifyNothingPublished();
    }

    @Test
    public void testProcessIdentification() {
        assertNull(state.process(new Identification(PREV_HOST, null)));
        verifyNothingPublished();
    }

    @Test
    public void testProcessLeader() {
        BucketAssignments asgn = new BucketAssignments(new String[] {HOST2, PREV_HOST, MY_HOST});
        Leader msg = new Leader(PREV_HOST, asgn);

        State next = mock(State.class);
        when(mgr.goActive()).thenReturn(next);

        // should stay in current state, but start distributing
        assertNull(state.process(msg));
        verify(mgr).startDistributing(asgn);
    }

    @Test
    public void testProcessOffline() {
        assertNull(state.process(new Offline(PREV_HOST)));
        verifyNothingPublished();
    }

    @Test
    public void testProcessQuery() {
        assertNull(state.process(new Query()));
        verifyNothingPublished();
    }

    /**
     * Verifies that nothing was published on either channel.
     */
    private void verifyNothingPublished() {
        verify(mgr, never()).publish(any(), any());
        verify(mgr, never()).publishAdmin(any());
    }
}