Mastering Unit Testing Principles with NUnit/

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Solution: Using Mocks on Loosely Coupled Code

Solution: Using Mocks on Loosely Coupled Code

Learn the solution to the mocking challenge and learn from your mistakes.

We'll cover the following...

Introduction

This lesson presents the solution to the challenge to use mocks on loosely coupled code. The solution test code will be presented followed by a detailed walkthrough.

Solution

The project solution is shown below. Run the test to confirm that all tests pass.

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  }
}
Solution to the challenge

Solution walkthrough

The test code is split across one Setup method and three test methods. One test method tests whether the controller returns charged when a card is charged. The two remaining test methods test whether the controller returns not charged when a card is not charged due to the payment service. Furthermore, it tests whether the controller returns not charged - you have selected too many special requests when there are too many special requests.

The Setup method

In the Setup method, the controller has three dependencies, and all three dependencies are mocked. Thereafter, the ICartItem is set up to return a dummy value, which in this case is 10 ...