如何在每个@Test之前运行@BeforeClass方法

Question

When I run my @Tests manualy, one by one - everything is fine. But when I run them all together - I`ve got an error. So how can I run @BeforeClass before each @Test. I cant use @Before becorse in my @BeforeClass I do some work in testing class constructor.

Testing class constructor:

public HttpUtils() {
    this.httpClient = HttpClients.createDefault();
}

Before class:

@BeforeClass
public static void init() throws IOException {
    mockStatic(HttpClients.class);
    final CloseableHttpClient closeableHttpClient = createMock(CloseableHttpClient.class);
    when(HttpClients.createDefault()).thenReturn(closeableHttpClient);
}

If I run all test. On second test Ive got HttpClient not like mock, but like real object, and lately have error coz of it.

Answer 1

Use @Before instead of @BeforeClass to execute before every test

@Before
public static void init() throws IOException {

with @Before causes that method to be run before the Test method. The @Before methods of superclasses will be run before those of the current class.

Answer 2

If you want to execute any method before each test class you should go for @Before annotation. By using @BeforeClass annotation you only call that method once in the test class.