MLetInternalsTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import javax.management.loading.MLet;
import org.testng.annotations.Test;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeTest;

import static org.testng.Assert.*;

/*
 * @test
 * @bug 8058089
 * @summary Tests various internal functions provided by MLet for correctness
 * @author Jaroslav Bachorik
 * @modules java.management/javax.management.loading:open
 * @run testng MLetInternalsTest
 */
public class MLetInternalsTest {
    private final static String CONSTRUCT_PARAMETER = "constructParameter";

    private final static Map<String, Method> testedMethods = new HashMap<>();

    @BeforeClass
    public static void setupClass() {
        testedMethods.clear();
        try {
            Method m = MLet.class.getDeclaredMethod(
                    CONSTRUCT_PARAMETER,
                    String.class, String.class
            );
            m.setAccessible(true);

            testedMethods.put(CONSTRUCT_PARAMETER, m);
        } catch (Exception ex) {
            throw new Error(ex);
        }
    }

    private MLet mlet;

    @BeforeTest
    public void setupTest() {
        mlet = new MLet();
    }

    @Test
    public void testConstructParameter() throws Exception {
        assertEquals(constructParameter("120", "int"), 120);
        assertEquals(constructParameter("120", "java.lang.Integer"), Integer.valueOf(120));
        assertEquals(constructParameter("120", "long"), 120L);
        assertEquals(constructParameter("120", "java.lang.Long"), Long.valueOf(120));
        assertEquals(constructParameter("120.0", "float"), 120.0f);
        assertEquals(constructParameter("120.0", "java.lang.Float"), Float.valueOf(120.0f));
        assertEquals(constructParameter("120.0", "double"), 120.0d);
        assertEquals(constructParameter("120", "java.lang.Double"), Double.valueOf(120d));
        assertEquals(constructParameter("120", "java.lang.String"), "120");
        assertEquals(constructParameter("120", "byte"), (byte)120);
        assertEquals(constructParameter("120", "java.lang.Byte"), (byte)120);
        assertEquals(constructParameter("120", "short"), (short)120);
        assertEquals(constructParameter("120", "java.lang.Short"), (short)120);
        assertEquals(constructParameter("true", "boolean"), true);
        assertEquals(constructParameter("true", "java.lang.Boolean"), Boolean.valueOf(true));
    }

    private Object constructParameter(String param, String type) throws Exception {
        return testedMethods.get(CONSTRUCT_PARAMETER).invoke(mlet, param, type);
    }
}