IterationCountCmdTest.java

/*
 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package org.openjdk.jmh.it;

import org.junit.Assert;
import org.junit.Test;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.openjdk.jmh.runner.options.TimeValue;

import java.util.concurrent.atomic.AtomicInteger;

/**
 * Tests if harness favors the iteration count cmdline parameters.
 */
@State(Scope.Thread)
public class IterationCountCmdTest {

    private final AtomicInteger count = new AtomicInteger();

    @Setup(Level.Iteration)
    public void setup() {
        count.incrementAndGet();
    }

    @TearDown
    public void tearDown() {
        Assert.assertEquals("Single iteration expected", 1, count.get());
    }

    @Benchmark
    @BenchmarkMode(Mode.All)
    @Fork(1)
    public void test() {
        Fixtures.work();
    }

    @Test
    public void invokeAPI() throws RunnerException {
        Options opt = new OptionsBuilder()
                .include(Fixtures.getTestMask(this.getClass()))
                .shouldFailOnError(true)
                .measurementIterations(1)
                .measurementTime(TimeValue.milliseconds(100))
                .warmupIterations(0)
                .build();
        new Runner(opt).run();
    }

}