Mock objects have the same interface as the real objects they imitate, so a customer object can`t know if it`s using a real object or a Mock object. Many available Mock object frameworks allow the programmer to indicate what methods are called for a mock object and in what order, what parameters are placed, and which values are returned. Therefore, the behavior of a complex object, such as a network seed, can be mimicged by a mock object, allowing the programmer to determine whether the tested object reacts appropriately to the many states in which these mock objects may be found. In a component test, Mock objects can simulate the behavior of complex and real objects and are therefore useful when a real object can be integrated in a way that is not practical or impossible to test components. If an object has one of the following features, it may be useful to use a Mock object in its place: As contract testing is a method of service testing, there are 3 ways to do so: – Against a service provided (URL) – Against a derision service (code) – Against a service to be done (nothing) Should the parties identify the signature and the date of validity of the agreement. The parties may declare that the contract is the whole agreement between the parties and that neither party can rely on assurances or other agreements. If there are other agreements that should be included by reference (for example. B a separate document dealing with certain customers), the contract should indicate this. If you make fun of the API`s breakpoints for your tests, you don`t receive any information about the end points. If you want to find potential problems such as arrival point configuration issues or abused classes, you need to perform integration or integration tests for the service provided. What is the simplest of derision, forgery or stub is inconsistent, but the simplest always returns pre-ordered answers (as in a method).
On the other side of the spectrum, the most complex object completely simulates a production object with complete logic, exceptions, etc. The question of whether one of the Mock, Fake- or Stub trios fits such a definition is in turn inconsistent throughout the literature. A good contract test for a service provided tells you: `The API to be tested includes the appropriate request` – The API to be tested can send the expected response – Access points are accessible – The provider and the consumer have a functional connection if you test with a service provided – If an expected integration is available, the same can be said for derid and TDD contract tests , if the provided version of the service matches the Mocks and tests.