How to use JUnit4TestMethod class of org.testng.junit package

1package org.testng.junit;
2
3import java.lang.reflect.Method;
4import org.junit.runner.Description;
5import org.testng.internal.Utils;
6
7/**
8 *
9 * @author lukas
10 */
11public class JUnit4TestMethod extends JUnitTestMethod {
12
13    public JUnit4TestMethod(JUnitTestClass owner, Description desc) {
14        super(owner, desc.getMethodName(), getMethod(desc), desc);
15    }
16
17    @Override
18    public Object[] getInstances() {
19        return new Object[0];
20    }
21
22    private static Method getMethod(Description desc) {
23        Class<?> c = desc.getTestClass();
24        String method = desc.getMethodName();
25        // remove [index] from method name in case of parameterized test
26        int idx = method.indexOf('[');
27        if (idx != -1) {
28            method = method.substring(0, idx);
29        }
30        try {
31            return c.getMethod(method);
32        } catch (Throwable t) {
33            Utils.log("JUnit4TestMethod", 2,
34                    "Method '" + method + "' not found in class '" + c.getName() + "': " + t.getMessage());
35            return null;
36        }
37    }
38}
39

Source: JUnit4TestMethod.java

package org.testng.junit;

import java.lang.reflect.Method;
import org.junit.runner.Description;
import org.testng.internal.Utils;

/**
 *
 * @author lukas
 */
public class JUnit4TestMethod extends JUnitTestMethod {

    public JUnit4TestMethod(JUnitTestClass owner, Description desc) {
        super(owner, desc.getMethodName(), getMethod(desc), desc);
    }

    @Override
    public Object[] getInstances() {
        return new Object[0];
    }

    private static Method getMethod(Description desc) {
        Class<?> c = desc.getTestClass();
        String method = desc.getMethodName();
        // remove [index] from method name in case of parameterized test
        int idx = method.indexOf('[');
        if (idx != -1) {
            method = method.substring(0, idx);
        }
        try {
            return c.getMethod(method);
        } catch (Throwable t) {
            Utils.log("JUnit4TestMethod", 2,
                    "Method '" + method + "' not found in class '" + c.getName() + "': " + t.getMessage());
            return null;
        }
    }
}