Quickbuild mstest code#

To make all of the tests pass, change the if clause at the beginning of the IsPrime method in the PrimeService.cs file: if (candidate < 2)Ĭontinue to iterate by adding more tests, more theories, and more code in the main library. Run dotnet test, and two of these tests fail. Var result = _primeService.IsPrime(value) Īssert.IsFalse(result, $' should not be prime') Public void IsPrime_ValuesLessThan2_ReturnFalse(int value) Add a new test method in PrimeService_IsPrimeShould.cs: The data driven test is a method that tests several values less than two, which is the lowest prime number. Instead of creating new tests, apply these two attributes to create a single data driven test. You can use the DataRow attribute to specify values for those inputs.

A test method can execute the same code but have different input arguments. There are other MSTest attributes that enable you to write a suite of similar tests. You could add new tests with the TestMethod attribute, but that quickly becomes tedious. There are a few other simple cases for prime numbers: 0, -1. Now that you've made one test pass, it's time to write more. After building both projects, it runs this single test. The dotnet test command runs a build for the PrimeService project and then for the PrimeService.Tests project. In the unit-testing-using-mstest directory, run dotnet test again.

Make this test pass by writing the simplest code in the PrimeService class that works: public bool IsPrime(int candidate) You haven't created the implementation yet. dotnet test starts the test runner using the unit test project you've created. The MSTest test runner contains the program entry point to run your tests. Save this file and execute dotnet test to build the tests and the class library and then run the tests. The TestMethod attribute indicates a method is a test method. The TestClass attribute denotes a class that contains unit tests. Public void IsPrime_InputIs1_ReturnFalse()Īssert.IsFalse(result, '1 should not be prime') Private readonly PrimeService _primeService Remove UnitTest1.cs from the PrimeService.Tests directory and create a new C# file named PrimeService_IsPrimeShould.cs with the following content: using Write a failing test, make it pass, then repeat the process. The following outline shows the final solution layout: /unit-testing-using-mstestĬhange to the unit-testing-using-mstest directory, and run dotnet sln add: dotnet sln add. You can see the entire file in the samples repository on GitHub. Use the dotnet add reference command: dotnet add reference. dotnet new in the previous step added the MSTest SDK, the MSTest test framework, the MSTest runner, and coverlet for code coverage reporting.Īdd the PrimeService class library as another dependency to the project.

The test project requires other packages to create and run unit tests. The template configures the test runner in the PrimeServiceTests.csproj file: The dotnet new command creates a test project that uses MSTest as the test library. Make the PrimeService.Tests directory the current directory and create a new project using dotnet new mstest. The following outline shows the directory structure: /unit-testing-using-mstest Run dotnet sln add to add the class library project to the solution: dotnet sln add PrimeService/PrimeService.csprojĬreate the PrimeService.Tests directory. Throw new NotImplementedException('Please create a test first.') Ĭhange the directory back to the unit-testing-using-mstest directory. Replace the code in the file with the following code to create a failing implementation of the PrimeService class: using System Make PrimeService the current directory and run dotnet new classlib to create the source project. The following outline shows the directory and file structure thus far: /unit-testing-using-mstest Inside this new directory, run dotnet new sln to create a new solution file for the class library and the test project. Create a directory called unit-testing-using-mstest to hold the solution. If you're testing an ASP.NET Core project, see Integration tests in ASP.NET Core.

Quickbuild mstest download#

For download instructions, see Samples and Tutorials. If you prefer to follow the tutorial using a pre-built solution, view or download the sample code before you begin. This tutorial takes you through an interactive experience building a sample solution step-by-step to learn unit testing concepts.