IsMachinePortOpenTest.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.provisionr.core.activities;

import org.apache.provisionr.api.pool.Machine;
import org.apache.provisionr.test.ProcessVariablesCollector;
import java.io.IOException;
import java.net.ServerSocket;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
import static org.fest.assertions.api.Assertions.assertThat;
import org.junit.Test;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class IsMachinePortOpenTest {

    private static final String RESULT = "result";

    @Test
    public void testWithRandomOpenPort() throws Exception {
        DelegateExecution execution = mock(DelegateExecution.class);

        when(execution.getVariable(eq(IsMachinePortOpen.MACHINE)))
            .thenReturn(Machine.builder().localhost().createMachine());

        ProcessVariablesCollector collector = new ProcessVariablesCollector();
        collector.install(execution);

        ServerSocket socket = null;
        try {
            socket = new ServerSocket(0);

            JavaDelegate delegate = new IsMachinePortOpen(RESULT, socket.getLocalPort());
            delegate.execute(execution);

            assertThat((Boolean) collector.getVariable(RESULT)).isTrue();

        } finally {
            if (socket != null) {
                socket.close();
            }
        }
    }

    @Test
    public void testWithRandomClosedPort() throws Exception {
        DelegateExecution execution = mock(DelegateExecution.class);

        when(execution.getVariable(eq(IsMachinePortOpen.MACHINE)))
            .thenReturn(Machine.builder().localhost().createMachine());

        ProcessVariablesCollector collector = new ProcessVariablesCollector();
        collector.install(execution);

        JavaDelegate delegate = new IsMachinePortOpen(RESULT, findRandomNotUsedPort());
        delegate.execute(execution);

        assertThat((Boolean) collector.getVariable(RESULT)).isFalse();
    }

    private int findRandomNotUsedPort() throws IOException {
        ServerSocket socket = null;
        try {
            socket = new ServerSocket(0);
            return socket.getLocalPort();
        } finally {
            if (socket != null) {
                socket.close();
            }
        }
    }
}