单元测试问题

单元测试思考请生成一段Java代码实现以下功能复杂代码的单元测试代码中有调用静态方法有返回值和无返回值和某几个对象的方法有返回值和无返回值都有这几个方法都需要mock并且不能使用容器注入的方式这不是spring项目单元测试实现代码以下是一个完整的Java单元测试示例使用Mockito框架模拟静态方法、对象方法有无返回值不依赖Spring容器importorg.junit.jupiter.api.Test;importorg.mockito.MockedStatic;importorg.mockito.Mockito;importstaticorg.junit.jupiter.api.Assertions.*;importstaticorg.mockito.ArgumentMatchers.*;classComplexServiceTest{// 被测类staticclassComplexService{privateDependencydependency;publicComplexService(Dependencydependency){this.dependencydependency;}publicStringprocess(){// 调用静态方法有返回值StringstaticResultStaticUtils.getConfig(key);// 调用静态方法无返回值StaticUtils.logOperation(start);// 调用对象方法有返回值intcountdependency.calculate();// 调用对象方法无返回值dependency.validate();returnstaticResult-count;}}// 依赖类staticclassDependency{publicintcalculate(){return0;}publicvoidvalidate(){}}// 静态工具类staticclassStaticUtils{publicstaticStringgetConfig(Stringkey){return;}publicstaticvoidlogOperation(Stringmsg){}}TestvoidtestProcessWithAllMocks(){// 1. 模拟对象依赖DependencymockDepMockito.mock(Dependency.class);Mockito.when(mockDep.calculate()).thenReturn(42);// 2. 模拟静态方法try(MockedStaticStaticUtilsmockedStaticMockito.mockStatic(StaticUtils.class)){// 配置静态方法模拟mockedStatic.when(()-StaticUtils.getConfig(anyString())).thenReturn(mocked_value);// 对无返回值静态方法的模拟mockedStatic.when(()-StaticUtils.logOperation(anyString())).thenAnswer(invocation-{System.out.println(Mocked log: invocation.getArgument(0));returnnull;});// 3. 执行测试ComplexServiceservicenewComplexService(mockDep);Stringresultservice.process();// 4. 验证结果assertEquals(mocked_value-42,result);// 验证方法调用mockedStatic.verify(()-StaticUtils.getConfig(key));mockedStatic.verify(()-StaticUtils.logOperation(start));Mockito.verify(mockDep).calculate();Mockito.verify(mockDep).validate();}}}关键实现说明Mock静态方法使用Mockito.mockStatic()创建静态方法的模拟作用域通过try-with-resources确保资源释放对有返回值的方法使用thenReturn()对无返回值方法使用thenAnswer()或doNothing()Mock对象方法常规Mockito.mock()创建模拟对象有返回值方法使用when().thenReturn()无返回值方法默认自动模拟或使用verify()验证调用测试验证使用assertEquals验证返回值通过verify()确认方法调用情况静态方法验证需在MockedStatic作用域内完成依赖配置需要在项目中添加JUnit和Mockito依赖Maven示例dependencygroupIdorg.junit.jupiter/groupIdartifactIdjunit-jupiter/artifactIdversion5.8.2/versionscopetest/scope/dependencydependencygroupIdorg.mockito/groupIdartifactIdmockito-core/artifactIdversion4.5.1/versionscopetest/scope/dependencydependencygroupIdorg.mockito/groupIdartifactIdmockito-inline/artifactIdversion4.5.1/versionscopetest/scope/dependency