1 mock 靜態方法

mockito庫並不能mock靜態方法，需要依賴powermock

第一步：給類添加註解

// 靜態類優先載入，所以需要提前告訴powermock哪些靜態類需要mock

@ContextConfiguration
@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(SpringJUnit4ClassRunner.class)
@PrepareForTest(靜態呼叫類.class)

第二步：mock使用

@Test(expectedExceptions = BusinessException.class)
public void testAddSupplierAccount_genIdentityNoError() {
    // 告訴powermock，需要mock該類的所有靜態方法
	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<HaitaoSupplier>());
	// 靜態方法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顧名思義
PowerMockito.doNothing().when(casService).addSupplier(anyLong(), any(ServiceKey.class));