Your
Code
Test
[TestMethod]
public void Method_Scenario_Result()
{
// Set dependencies, build SUT, set
// expectations
// Exercise the SUT
// Check behaviour/state of SUT
// Check that expectations have been met
}
Assert
Act
Arrange
[TestMethod]
public void Method_Scenario_Result()
{
// Set dependencies, build SUT, set
// expectations
// Exercise the SUT
// Check behaviour/state of SUT
// Check that expectations have been met
}
Assert
Act
Arrange
[Test]
public void CreateNumString_TwoSimpleNumbers_ReturnsStringWithCommaBetween()
{
StringCalc sc = new StringCalc();
string result = sc.CreateNumString(1, 2);
Assert.AreEqual(String.Format("{0},{1}", x, y), result);
}
SUT Dependancy
Dependancy
Dependency
public class Sample{
private DatabaseThingie myDatabase;
public Sample() {
myDatabase = new DatabaseThingie();
}
public void DoStuff() {
myDatabase.GetData();
}
}
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ
Unit Testing and Mocking using MOQ

Unit Testing and Mocking using MOQ

Editor's Notes

  • #15 publicvoidProductService_Create_CallsRepositorySave() {varmockProductRepository=newMock<IProductRepository>();mockProductRepository.Setup(r=>r.Save(It.IsAny<Product>()));varservice=newProductService(mockProductRepository.Object);service.Create(newProductViewModel());mockProductRepository.VerifyAll(); }
  • #16  [Test] [ExpectedException(typeof (InvalidProductIdException))]publicvoidProductService_Create_ExceptionIfIdNotCreated() {ProductViewModelproductViewModel=newProductViewModel() { Description="Nice product", Name="ProductA" };varmockProductRepository=newMock<IProductRepository>();mockProductRepository.Setup(r=>r.Save(It.IsAny<Product>()));varmockProductIdBuilder=newMock<IProductIdBuilder>();varservice=newProductService(mockProductRepository.Object, mockProductIdBuilder.Object);service.Create(productViewModel); }
  • #17  [Test]publicvoidProductService_CreateMany_VerifyCallsWereMade() {List<ProductViewModel>productViewModels=newList<ProductViewModel>() {newProductViewModel(){Name="ProductA", Description="Great product"},newProductViewModel(){Name="ProductB", Description="Bad product"},newProductViewModel(){Name="ProductC", Description="Cheap product"},newProductViewModel(){Name="ProductD", Description="Expensive product"} };varmockProductRepository=newMock<IProductRepository>();varmockIdBuilder=newMock<IProductIdBuilder>();mockIdBuilder.Setup(b=>b.BuildProductIdentifier()).Returns(newProductIdentifier());varservice=newProductService(mockProductRepository.Object, mockIdBuilder.Object);service.CreateMany(productViewModels);mockProductRepository.Verify(p=>p.Save(It.IsAny<Product>()), Times.Exactly(productViewModels.Count)); }
  • #19 publicvoidProductService_CreateMany_VerifyCallsWereMadeWithCallbacks() {List<ProductViewModel>productViewModels=newList<ProductViewModel>() {newProductViewModel(){Name="ProductA", Description="Great product"},newProductViewModel(){Name="ProductB", Description="Bad product"},newProductViewModel(){Name="ProductC", Description="Cheap product"},newProductViewModel(){Name="ProductD", Description="Expensive product"} };List<int>productIds=newList<int>();varmockProductRepository=newMock<IProductRepository>();mockProductRepository.Setup(r=>r.Save(It.IsAny<Product>())).Callback<Product>(p=>productIds.Add(p.Identifier.RawValue));varmockIdBuilder=newMock<IProductIdBuilder>();intproductId=1;mockIdBuilder.Setup(b=>b.BuildProductIdentifier()).Returns(() =>newProductIdentifier(){RawValue=productId}).Callback(() =>newProductIdentifier() { RawValue=productId++ });varservice=newProductService(mockProductRepository.Object, mockIdBuilder.Object);service.CreateMany(productViewModels);mockProductRepository.Verify(p=>p.Save(It.IsAny<Product>()), Times.Exactly(productViewModels.Count));vargroupings=fromxinproductIdsgroupxbyxintogletcount=g.Count()orderbycountdescendingselectnew { Value=g.Key, Count=count };foreach (varxingroupings)Assert.IsTrue(x.Count==1); } }
  • #20  [Test]publicvoidProductService_CallCreate_TryThreeTimesOnFailedSave() {varmockProductRepository=newMock<IProductRepository>();mockProductRepository.Setup(r=>r.Save(It.IsAny<Product>())).Throws(newDbConnectionException());varmockIdBuilder=newMock<IProductIdBuilder>();mockIdBuilder.Setup(b=>b.BuildProductIdentifier(It.IsAny<string>())).Returns(newProductIdentifier());varservice=newProductService(mockProductRepository.Object, mockIdBuilder.Object);service.Create(newProductViewModel());mockProductRepository.Verify(r=>r.Save(It.IsAny<Product>()), Times.Exactly(3)); }