/*
 * The MIT License
 *
 * Copyright 2012 Jesse Glick.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package hudson.slaves;

import edu.umd.cs.findbugs.annotations.SuppressWarnings;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.StringReader;
import org.apache.commons.io.output.NullOutputStream;
import org.junit.Test;
import static org.junit.Assert.*;

@SuppressWarnings("DM_DEFAULT_ENCODING")
public class ComputerLauncherTest {

    @Test public void jdk7() throws IOException {
        assertChecked("java version \"1.7.0_05\"\nJava(TM) SE Runtime Environment (build 1.7.0_05-b05)\nJava HotSpot(TM) Server VM (build 23.1-b03, mixed mode)\n", "1.7.0");
    }

    @Test public void openJDK7() throws IOException {
        assertChecked("openjdk version \"1.7.0-internal\"\nOpenJDK Runtime Environment (build 1.7.0-internal-pkgsrc_2010_01_03_06_54-b00)\nOpenJDK 64-Bit Server VM (build 17.0-b04, mixed mode)\n", "1.7.0");
    }

    @Test public void jdk6() throws IOException {
        assertChecked("java version \"1.6.0_33\"\nJava(TM) SE Runtime Environment (build 1.6.0_33-b03)\nJava HotSpot(TM) Server VM (build 20.8-b03, mixed mode)\n", "1.6.0");
    }

    @Test(expected=IOException.class) public void jdk5() throws IOException {
        ComputerLauncher.checkJavaVersion(new PrintStream(new NullOutputStream()), "-", new BufferedReader(new StringReader("java version \"1.5.0_22\"\nJava(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_22-b03)\nJava HotSpot(TM) Server VM (build 1.5.0_22-b03, mixed mode)\n")));
    }

    @Test(expected=IOException.class) public void j2sdk4() throws IOException {
        ComputerLauncher.checkJavaVersion(new PrintStream(new NullOutputStream()), "-", new BufferedReader(new StringReader("java version \"1.4.2_19\"\nJava(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_19-b04)\nJava HotSpot(TM) Client VM (build 1.4.2_19-b04, mixed mode)\n")));
    }

    @Test public void jdk10() throws IOException { // predicted
        assertChecked("java version \"1.10.0_02\"\nJava(TM) SE Runtime Environment (build 1.10.0_02-b01)\nJava HotSpot(TM) Server VM (build 23.1-b03, mixed mode)\n", "1.10.0");
    }

    private static void assertChecked(String text, String spec) throws IOException {
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        ComputerLauncher.checkJavaVersion(new PrintStream(os), "bin/java", new BufferedReader(new StringReader(text)));
        String logged = os.toString();
        assertTrue(logged, logged.contains(Messages.ComputerLauncher_JavaVersionResult("bin/java", spec)));
    }

}