junit 4中对指定异常的测试

public class Person {
private final String name;
private final int age;

public Person(String name, int age) {
this.name = name;
this.age = age;
if (age <= 0) {
throw new IllegalArgumentException('Invalid age:' + age);
}
}
}

import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

public class PersonTest {

@Rule
public ExpectedException exception = ExpectedException.none();

@Test
public void testExpectedException() {
exception.expect(IllegalArgumentException.class);
exception.expectMessage(containsString('Invalid age'));
new Person('Joe', -1);
}
}

@Test(expected = IllegalArgumentException.class)
public void testExpectedException2() {
new Person('Joe', -1);
}