java 框架中有哪些用于单元测试和集成测试的工具和方法？

import org.junit.Test;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

public class UserServiceTest {

    @Test
    public void createUser() {
        // 创建一个模拟的 UserRepository
        UserRepository userRepository = mock(UserRepository.class);

        // 配置模拟的用户存储行为
        when(userRepository.save(any(User.class))).thenReturn(new User("John Doe"));

        // 创建 UserService 实例，注入模拟的 UserRepository
        UserService userService = new UserService(userRepository);

        // 调用待测试方法
        User user = userService.createUser("John Doe", "john.doe@example.com");

        // 断言
        assertNotNull(user);
        assertEquals("John Doe", user.getName());
        assertEquals("john.doe@example.com", user.getEmail());
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.web.servlet.MockMvc;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;

@SpringBootTest
@AutoConfigureMockMvc
public class UserControllerIntegrationTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void createUser() throws Exception {
        // 构造创建用户的 JSON 请求体
        String requestBody = "{\"name\": \"John Doe\", \"email\": \"john.doe@example.com\"}";

        // 发送 POST 请求以创建用户
        mockMvc.perform(post("/api/users")
                    .contentType("application/json")
                    .content(requestBody))
                .andExpect(status().isCreated())
                .andExpect(jsonPath("$.name").value("John Doe"));
    }
}