Mockito

测试调用类的静态方法的示例

需要先引入：

<dependency>
   <groupId>org.mockito</groupId>
   <artifactId>mockito-inline</artifactId>
   <scope>test</scope>
</dependency>

单元测试代码：

import org.junit.jupiter.api.Test;
import org.mockito.MockedStatic;
import org.mockito.Mockito;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.*;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.junit.jupiter.MockitoExtension;

@ExtendWith(MockitoExtension.class)
public class MathUtilsTest {

    @Test
    public void testPrintSumMethodCalled() {
        try (MockedStatic<MathUtils> mockedMathUtils = mockStatic(MathUtils.class)) {
            // 模拟的调用场景，这里假设在某个业务逻辑代码中会调用MathUtils.printSum方法
            // 例如以下是模拟调用
            MathUtils.printSum(3, 5);

            // 使用verify方法来验证MathUtils.printSum方法是否被调用，并且参数是否符合预期
            mockedMathUtils.verify(() -> MathUtils.printSum(3, 5));
        }
    }

    @Test
    public void testPrintSumMethodCalledWithAnyParameters() {
        try (MockedStatic<MathUtils> mockedMathUtils = mockStatic(MathUtils.class)) {
            // 模拟的调用场景，这里假设在某个业务逻辑代码中会调用MathUtils.printSum方法
            MathUtils.printSum(10, 20);

            // 如果不关心具体传入的参数是什么，只想验证方法被调用了，可以使用anyInt()等参数匹配器（根据参数类型选择合适的匹配器）
            mockedMathUtils.verify(() -> MathUtils.printSum(anyInt(), anyInt()));
        }
    }
}

package love.wishx.hd_volunteer_center.service;

import love.wishx.hd_volunteer_center.BaseTest;
import love.wishx.hd_volunteer_center.entity.Role;
import love.wishx.hd_volunteer_center.service.impl.MySubServiceImpl;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.mock.mockito.MockBean;

import java.util.ArrayList;
import java.util.List;

public class IMyServiceTest extends BaseTest {

    @Autowired
    private IMyService myService;

    @MockBean
    private MySubServiceImpl subService;

    @Test
    public void test() {

        Answer<Role> answer = new Answer<Role>() {
            @Override
            public Role answer(InvocationOnMock invocation) throws Throwable {
                String a = invocation.getArgument(0, String.class);
                Object b = invocation.getArgument(1, Object.class);
                String c = invocation.getArgument(2, String.class);
                System.out.printf("a=%s\n", a);
                System.out.printf("b=%s\n", b.toString());
                System.out.printf("c=%s\n", c);
                return (Role) invocation.callRealMethod();
            }
        };

        Mockito.doAnswer(answer).when(subService).getRole(Mockito.anyString(), Mockito.any(), Mockito.anyString());

        List<Role> roleList = new ArrayList<>();
        Role tmp = new Role();
        tmp.setName("123");
        tmp.setId(2);
        roleList.add(tmp);

        Role r = myService.getRole("j", roleList, "k");

        System.out.println(r);

    }

}

package love.wishx.hd_volunteer_center.service;

import love.wishx.hd_volunteer_center.entity.Role;

public interface IMyService {

    Role getRole(String a, Object b, String c);

}

package love.wishx.hd_volunteer_center.service.impl;

import love.wishx.hd_volunteer_center.entity.Role;
import love.wishx.hd_volunteer_center.service.IMyService;
import love.wishx.hd_volunteer_center.service.IMySubService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MyServiceImpl implements IMyService {

    @Autowired
    private IMySubService subService;

    @Override
    public Role getRole(String a, Object b, String c) {
        return subService.getRole(a, b, c);
    }

}

package love.wishx.hd_volunteer_center.service;

import love.wishx.hd_volunteer_center.entity.Role;

public interface IMySubService {

    Role getRole(String a, Object b, String c);

}

package love.wishx.hd_volunteer_center.service.impl;

import love.wishx.hd_volunteer_center.entity.Role;
import love.wishx.hd_volunteer_center.service.IMySubService;
import org.springframework.stereotype.Service;

@Service
public class MySubServiceImpl implements IMySubService {

    @Override
    public Role getRole(String a, Object b, String c) {
        Role role = new Role();
        role.setId(3);
        role.setName("bbbb");
        return role;
    }

}