在编写代码时，经常需要调用别人已经写好的工具类，而这些工具提供的方法经常是static方法，在这里，直接贴出《PowerMock实战手册》中的例子
待测试方法：
public class EmployeeService {
public int getEmployeeCountWithStatic() {
return EmployeeUtils.getEmployeeCount();
}
}
引用的工具类
public class EmployeeUtils {
public static int getEmployeeCount() {
throw new UnsupportedOperationException();
}
}
测试方法：
@PrepareForTest(EmployeeUtils.class)
public class EmployeeServiceTestWithStaticTest extends PowerMockTestCase{ private EmployeeService employeeService; @ObjectFactory
public ITestObjectFactory getObjectFactory() {
return new PowerMockObjectFactory();
} @BeforeMethod
public void init(){
employeeService = new EmployeeService();
} @Test
public void testGetEmployeeCountWithStatic() {
PowerMockito.mockStatic(EmployeeUtils.class);
PowerMockito.when(EmployeeUtils.getEmployeeCount()).thenReturn(10);
int count = employeeService.getEmployeeCountWithStatic();
Assert.assertEquals(10, count);
}
}
重点是
PowerMockito.mockStatic(EmployeeUtils.class);
mock类EmployeeUtils中的所有static方法