JvmVersionTest.java

/*
 * Copyright 2014 NAVER Corp.
 *
 * 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.
 */

package com.navercorp.pinpoint.common.util;

import static org.junit.Assert.*;
import static com.navercorp.pinpoint.common.util.JvmVersion.*;

import org.junit.Test;

import com.navercorp.pinpoint.common.util.JvmVersion;

/**
 * @author hyungil.jeong
 */
public class JvmVersionTest {

    @Test
    public void testOnOrAfter() {
        // JDK 5
        assertTrue(JAVA_5.onOrAfter(JAVA_5));
        assertFalse(JAVA_5.onOrAfter(JAVA_6));
        assertFalse(JAVA_5.onOrAfter(JAVA_7));
        assertFalse(JAVA_5.onOrAfter(JAVA_8));
        assertFalse(JAVA_5.onOrAfter(UNSUPPORTED));
        // JDK 6
        assertTrue(JAVA_6.onOrAfter(JAVA_5));
        assertTrue(JAVA_6.onOrAfter(JAVA_6));
        assertFalse(JAVA_6.onOrAfter(JAVA_7));
        assertFalse(JAVA_6.onOrAfter(JAVA_8));
        assertFalse(JAVA_6.onOrAfter(UNSUPPORTED));
        // JDK 7
        assertTrue(JAVA_7.onOrAfter(JAVA_5));
        assertTrue(JAVA_7.onOrAfter(JAVA_6));
        assertTrue(JAVA_7.onOrAfter(JAVA_7));
        assertFalse(JAVA_7.onOrAfter(JAVA_8));
        assertFalse(JAVA_7.onOrAfter(UNSUPPORTED));
        // JDK 8
        assertTrue(JAVA_8.onOrAfter(JAVA_5));
        assertTrue(JAVA_8.onOrAfter(JAVA_6));
        assertTrue(JAVA_8.onOrAfter(JAVA_7));
        assertTrue(JAVA_8.onOrAfter(JAVA_8));
        assertFalse(JAVA_8.onOrAfter(UNSUPPORTED));
        // Unsupported
        assertFalse(UNSUPPORTED.onOrAfter(JAVA_5));
        assertFalse(UNSUPPORTED.onOrAfter(JAVA_6));
        assertFalse(UNSUPPORTED.onOrAfter(JAVA_7));
        assertFalse(UNSUPPORTED.onOrAfter(JAVA_8));
        assertFalse(UNSUPPORTED.onOrAfter(UNSUPPORTED));
    }

    @Test
    public void testGetFromDoubleVersion() {
        // JDK 5
        final JvmVersion java_5 = JvmVersion.getFromVersion(1.5);
        assertSame(java_5, JAVA_5);
        // JDK 6
        final JvmVersion java_6 = JvmVersion.getFromVersion(1.6);
        assertSame(java_6, JAVA_6);
        // JDK 7
        final JvmVersion java_7 = JvmVersion.getFromVersion(1.7);
        assertSame(java_7, JAVA_7);
        // JDK 8
        final JvmVersion java_8 = JvmVersion.getFromVersion(1.8);
        assertSame(java_8, JAVA_8);
        // Unsupported
        final JvmVersion java_unsupported = JvmVersion.getFromVersion(0.9);
        assertSame(java_unsupported, UNSUPPORTED);
    }

    @Test
    public void testGetFromStringVersion() {
        // JDK 5
        final JvmVersion java_5 = JvmVersion.getFromVersion("1.5");
        assertSame(java_5, JAVA_5);
        // JDK 6
        final JvmVersion java_6 = JvmVersion.getFromVersion("1.6");
        assertSame(java_6, JAVA_6);
        // JDK 7
        final JvmVersion java_7 = JvmVersion.getFromVersion("1.7");
        assertSame(java_7, JAVA_7);
        // JDK 8
        final JvmVersion java_8 = JvmVersion.getFromVersion("1.8");
        assertSame(java_8, JAVA_8);
        // Unsupported
        final JvmVersion java_unsupported = JvmVersion.getFromVersion("abc");
        assertSame(java_unsupported, UNSUPPORTED);
    }

    @Test
    public void testGetFromClassVersion() {
        // JDK 5
        final JvmVersion java_5 = JvmVersion.getFromClassVersion(49);
        assertSame(java_5, JAVA_5);
        // JDK 6
        final JvmVersion java_6 = JvmVersion.getFromClassVersion(50);
        assertSame(java_6, JAVA_6);
        // JDK 7
        final JvmVersion java_7 = JvmVersion.getFromClassVersion(51);
        assertSame(java_7, JAVA_7);
        // JDK 8
        final JvmVersion java_8 = JvmVersion.getFromClassVersion(52);
        assertSame(java_8, JAVA_8);
        // Unsupported
        final JvmVersion java_unsupported = JvmVersion.getFromClassVersion(-1);
        assertSame(java_unsupported, UNSUPPORTED);
    }
}