Mockito调用静态方法和void方法

1 mock 静态方法

mockito库并不能mock静态方法，需要依赖powermock

第一步：给类添加注解

// 静态类优先加载，所以需要提前告诉powermock哪些静态类需要mock

@ContextConfiguration
@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(SpringJUnit4ClassRunner.class)
@PrepareForTest(静态调用类.class)

public class SupplierServiceImplTest extends PowerMockTestCase {}

第二步：mock使用

@Test(expectedExceptions = BusinessException.class)
public void testAddSupplierAccount_genIdentityNoError() {
    // 告诉powermock，需要mock该类的所有静态方法
	PowerMockito.mockStatic(PasswordGenerator.class);

	final SupplierAccountDto supplierAccountDto = new SupplierAccountDto();
	supplierAccountDto.setName("小明");
	final String randomPWd = "666";

	PowerMockito.when(supplierDao.selectByEmail(anyString()))
			.thenReturn(new ArrayList());
	// 静态方法mock
	PowerMockito.when(PasswordGenerator.genPwd()).thenReturn(randomPWd);
	PowerMockito.when(pwEncoder.encode(anyString())).thenReturn(randomPWd);
	PowerMockito.when(identityNoGenerator.genIdentityNo()).thenReturn(-1L);

	supplierServiceImpl.addSupplierAccount(supplierAccountDto);

	verify(pwEncoder).encode(randomPWd);
}

2 mock void 方法

// void嘛，doNothing顾名思义
PowerMockito.doNothing().when(casService).addSupplier(anyLong(), any(ServiceKey.class));