To see the differences, you can compare the next error messages with the previous ones. I took a stab at trying to implement this: #569. He thinks about how he can write code to be easy to read and understand. If we perform the same test using Fluent Assertions library, the code will look something like this: SomeInheritedOrDirectlyDecoratedAttribute, "because this is required to intercept exceptions", "because all Actions with HttpPost require ValidateAntiForgeryToken", "all the return types should be immutable". You can now call the methods in a chain as illustrated in the code snippet given below. If the phrase does not start with the wordbecauseit is prepended automatically. And for Hello! The Mock<T> class is given by Moq and allows us to create mocks that represents each of the services that we want to inject.We use the Object property to get the instance of the mocked service.. To mock a method or property we use the Setup() method, giving to it a lambda expression with the selected method and parameter.Then we use the Returns() method to tell the mock what it has to return . The assertions that ship as part of the built-in XCTest framework all have the prefix XCTAssert, the most basic of which simply compares any boolean value against true: However, when it comes to . One of the best instructional methods to serve various technology-enhanced learning activities was Project-Based Learning. Instead of thinking in single independent assertions (tests) cases within a test case, the better way to look at it would be to say "The test case verifies if the person is created correctly". Unit testing is an essential part of any software development process. As a result, they increase the quality of your codebase, and they reduce the risk of introducing bugs. Fluent Assertions' unique features and a large set of extension methods achieve these goals. First, notice that theres only a single call to Should().BeEquivalentTo(). Expected member Property1 to be "Paul", but found . Enter the email address you signed up with and we'll email you a reset link. Expected member Property3 to be "Mr", but found . In Canada, email info@hkcanada.com. It sets the whole mood for the interview. It should also be noted that fluent interfaces are implemented using method chaining, but not all uses of method chaining are fluent interfaces. Looking for feedback. By writing unit tests, you can verify that individual pieces of code are working as expected. Find centralized, trusted content and collaborate around the technologies you use most. You might want to use fluent interfaces and method chaining when you want your code to be simple and readable by non-developers. You should now specify return this; from these participating methods. One valuable and really easy to write test with NSubstitute is validating that a particular method was called with a particular object. This makes it easy to understand what the assertion is testing for. The above will batch the two failures, and throw an exception at the point of disposing the AssertionScope displaying both errors. What if you want to only compare a few of the properties for equality? Should you use Fluent Assertions in your project? IDE configuration to get assertThat in code completion. But, while it does seem good for this simple test case, it might not be that readable for more complex class structures. If youre only asserting the value of a single property, keep it simple and assert the property directly (instead of using the approach shown in the previous section), like this: Its typically a good idea to only assert one thing in a unit test, but sometimes it makes sense to assert multiple things. The Return methods could be marked internal and the Arguments property changed to IReadOnlyList