gemfire-core/src/test/java/com/gemstone/gemfire/internal/lang/SystemUtilsJUnitTest.java

/*
 * =========================================================================
 *  Copyright (c) 2002-2014 Pivotal Software, Inc. All Rights Reserved.
 *  This product is protected by U.S. and international copyright
 *  and intellectual property laws. Pivotal products are covered by
 *  more patents listed at http://www.pivotal.io/patents.
 * =========================================================================
 */

package com.gemstone.gemfire.internal.lang;

import static org.junit.Assert.*;

import java.lang.management.ManagementFactory;

import org.junit.Test;
import org.junit.experimental.categories.Category;

import com.gemstone.gemfire.test.junit.categories.UnitTest;

/**
 * The SystemUtilsJUnitTest class is a test suite of test cases for testing the contract and functionality of the SystemUtils
 * class.
 * <p/>
 * @author John Blum
 * @see com.gemstone.gemfire.internal.lang.SystemUtils
 * @see org.junit.Assert
 * @see org.junit.Test
 * @since 6.8
 */
@Category(UnitTest.class)
public class SystemUtilsJUnitTest {

  // NOTE this test adds some maintenance overhead but ensure the correct functioning of GemFire code that relies on
  // SystemUtils.isJavaVersionAtLeast
  @Test
  public void testIsJavaVersionAtLeast() {
    // note, the expected version value should be set to the minimum supported version of the Java Runtime Environment
    // (JRE) for GemFire
    assertTrue(SystemUtils.isJavaVersionAtLeast("1.7"));
    assertTrue(SystemUtils.isJavaVersionAtLeast("1.7.0_72"));
    // note, the expected version value should be set to the next version of the Java Runtime Environment (JRE)
    // not currently available.
    assertFalse(SystemUtils.isJavaVersionAtLeast("1.9"));
  }

  @Test
  public void testIsAppleJVM() {
    final boolean expected = ManagementFactory.getRuntimeMXBean().getVmVendor().contains(SystemUtils.APPLE_JVM_VENDOR_NAME);
    assertEquals(expected, SystemUtils.isAppleJVM());
  }

  @Test
  public void testIsOracleJVM() {
    final boolean expected = ManagementFactory.getRuntimeMXBean().getVmVendor().contains(SystemUtils.ORACLE_JVM_VENDOR_NAME);
    assertEquals(expected, SystemUtils.isOracleJVM());
  }

  @Test
  public void testIsHotSpotVM() {
    final boolean expected = ManagementFactory.getRuntimeMXBean().getVmName().contains(SystemUtils.JAVA_HOTSPOT_JVM_NAME);
    assertEquals(expected, SystemUtils.isHotSpotVM());
  }

  @Test
  public void testIsJ9VM() {
    final boolean expected = ManagementFactory.getRuntimeMXBean().getVmName().contains(SystemUtils.IBM_J9_JVM_NAME);
    assertEquals(expected, SystemUtils.isJ9VM());
  }

  @Test
  public void testIsJRockitVM() {
    final boolean expected = ManagementFactory.getRuntimeMXBean().getVmName().contains(SystemUtils.ORACLE_JROCKIT_JVM_NAME);
    assertEquals(expected, SystemUtils.isJRockitVM());
  }

  @Test
  public void testIsLinux() {
    final boolean expected = ManagementFactory.getOperatingSystemMXBean().getName().contains(SystemUtils.LINUX_OS_NAME);
    assertEquals(expected, SystemUtils.isLinux());
  }
  @Test
  public void testIsMacOSX() {
    final boolean expected = ManagementFactory.getOperatingSystemMXBean().getName().contains(SystemUtils.MAC_OSX_NAME);
    assertEquals(expected, SystemUtils.isMacOSX());
  }

  @Test
  public void testIsWindows() throws Exception {
    final boolean expected = ManagementFactory.getOperatingSystemMXBean().getName().contains(SystemUtils.WINDOWS_OS_NAME);
    assertEquals(expected, SystemUtils.isWindows());
  }

}