JUnit @rule MethodRule example implementation - Exemplo de implementacao de @rule no JUnit

ExemploMethodRule.java

import org.junit.rules.MethodRule;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.Statement;
 
public class ExemploMethodRule implements MethodRule {
	
	@Override
	public Statement apply(final Statement base, FrameworkMethod method, Object target) {
		System.out.println("ExemploMethodRule#apply() - base: " + base);
		System.out.println("ExemploMethodRule#apply() - method (metodo de teste atual): " + method);
		System.out.println("ExemploMethodRule#apply() - target (instancia atual da classe de teste): " + target);
		
		return new Statement() {
			@Override
			public void evaluate() throws Throwable {
				System.out.println("->before evaluate()");
				try {
					base.evaluate();
				} finally {
					System.out.println("->after evaluate()");
				}
			}
		};
	}
 
}

Description will be available if you extend TestRule isntead of MethodRule:

private void go(Description description) {
    System.out.println("getDisplayName: "+description.getDisplayName());
    System.out.println("getChildren: "+description.getChildren());
    System.out.println("isSuite: "+description.isSuite());
    System.out.println("isTest: "+description.isTest());
    System.out.println("testCount: "+description.testCount());
    System.out.println("toString: "+description.toString());
    System.out.println("isEmpty: "+description.isEmpty());
    System.out.println("getAnnotations: "+description.getAnnotations());
    System.out.println("getTestClass: "+description.getTestClass());
    System.out.println("getClassName: "+description.getClassName());
    System.out.println("getMethodName: "+description.getMethodName());
    System.out.println("###################################################");
}