java - 参数化测试检查构造函数是否抛出异常

Question

我有一个可能抛出IOException的构造函数:

public MyClass(string url) throws IOException { ... }

现在我想使用参数化测试来测试在某些情况下引发的异常。我可以用 url 的值和预期的异常来注释我的测试方法吗？

@Test("https://myHost/not.existsing", expected = IOException.class)
@Test("https://myHost/whrong.fileextension", expected = IOException.class)
public void MyTest(String url)
{
    Assert.Throws(expected);
}

Answer 1

Junit 4 支持 Prameterized 。试试这个:

@RunWith(Parameterized.class)
public class Test {
    @Parameters
    public static Collection<Object[]> data() {
        return Arrays.asList(new Object[][] {     
                 { "https://myHost/whrong.fileextension" }, 
                 { "https://myHost/not.existsing"}  
           });
    }

    private String url;


    public Test(String url) {
        this.url = url;
    }

    @Test(expected = IOException.class)
    public void test() throws IOException {
       MyClass myClass = new MyClass(url);
    }
}