package com.banmoon.service.impl;
​
import com.banmoon.service.PowerMockitoService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
​
@Slf4j
@Service
@RequiredArgsConstructor
public class PowerMockitoServiceImpl implements PowerMockitoService {
​
    @Override
    public void publicMethod(String name) {
        log.info("Открытый метод: {}", name);
        privateMethod(name);
    }
​
    private void privateMethod(String name) {
        log.info("Частный метод: {}", name);
    }
​
}

package com.banmoon.powerMockitoTest;
​
import com.banmoon.service.impl.PowerMockitoServiceImpl;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
​
import static org.mockito.ArgumentMatchers.anyString;
​
/**
 * @author banmoon
 * @date 2024/07/15 18:09:02
 */
@RunWith(PowerMockRunner.class)
@PrepareForTest(PowerMockitoServiceImpl.class)
public class PublicCallPrivateMethodTest {
​
    @InjectMocks
    private PowerMockitoServiceImpl powerMockitoServiceImplUnderTest;
​
    @Test
    public void testPublicMethod() throws Exception {
        // Установить параметры
        powerMockitoServiceImplUnderTest = PowerMockito.spy(powerMockitoServiceImplUnderTest);
        PowerMockito.doNothing()
                .when(powerMockitoServiceImplUnderTest, PowerMockito.method(PowerMockitoServiceImpl.class, "privateMethod", String.class))
                .withArguments(anyString());
​
        // Запуск тестов
        powerMockitoServiceImplUnderTest.publicMethod("name");
​
        // Результаты проверки
        PowerMockito.verifyPrivate(powerMockitoServiceImplUnderTest).invoke("privateMethod", anyString());
    }
}