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How to generate new object in mocking factory?


Asked by Holland Harrington on Dec 08, 2021 FAQ



You need to use one of the overloads which takes a Func<TResult> as a parameter with this can you specify a function that will calculate the value to return from the method: With this setup you will get a different instance every time your mocked method is caled.
Indeed,
Moq has a Setup () function by which we can set up the mock object. We need to use a lambda expression to point to a specific function. Here we are referring to the checkEmp () function and the Returns parameter value is true.
Also, Simply put, it’s an object made specifically to make our testing easier while providing all the features of a real object. Creating a mocked object is an important part of the Unit testing process. Why specifically we need mock objects?
Subsequently,
jest.mock (path, moduleFactory) takes a module factory argument. A module factory is a function that returns the mock. In order to mock a constructor function, the module factory must return a constructor function. In other words, the module factory must be a function that returns a function - a higher-order function (HOF).
Besides,
Mock new object creation You might have a method which instantiates some object and works with it. This case could be very tricky to automate because you do not have any control over this newly created object. This is where PowerMock comes to help to allow you to control what object is being created by replacing it with an object you can control.