LatencyTimeRecorderTest.java

/**
 * Copyright (c) Codice Foundation
 * <p>
 * This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 * <p>
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details. A copy of the GNU Lesser General Public License
 * is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package ddf.metrics.interceptor;

import static org.hamcrest.Matchers.greaterThanOrEqualTo;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.lessThan;
import static org.junit.Assert.assertThat;

import org.junit.Test;

/**
 * @author willisod
 *
 */
public class LatencyTimeRecorderTest {

    /**
     * Test method for {@link ddf.metrics.interceptor.LatencyTimeRecorder#getLatencyTime()}.
     *
     * @throws InterruptedException
     */
    @Test
    public void testGetLatencyTime() throws InterruptedException {

        // Setup
        LatencyTimeRecorder ltr = new LatencyTimeRecorder();

        long startTime = System.currentTimeMillis();

        // Perform test
        ltr.beginHandling();
        Thread.sleep(1);
        ltr.endHandling();

        // validate
        Thread.sleep(1);
        long endTime = System.currentTimeMillis();
        long totalTime = endTime - startTime;

        assertThat(ltr.getLatencyTime(), is(lessThan(totalTime)));
        assertThat(ltr.getLatencyTime(), is(greaterThanOrEqualTo(1L)));
    }

}