Method to be called before any test (xUnit)

Question

Is there any way to create method that will be automatically called before any test?

[Fact] public void Test1() { } [Fact] public void Test2() { } private void Prepare() { // Prepare test environment }

I need Prepare to be called before Test1 and Test2. It should be like this:

Call Prepare()
Call Test1
Call Prepare()
Call Test2

I know that i can call it by my own like

[Fact] public void Test1() { Prepare(); }

but is there any way to do it automatically?

Does this answer your question? xUnit.net: Global setup + teardown? — nalka
– nalka, Commented Oct 18, 2023 at 8:51

pfx · Accepted Answer · 2023-05-18 14:40:35Z

2

Include that call to the Prepare method in the constructor of your test class.

The documentation comparing other testing frameworks that have e.g. a [SetUp] attribute or alike mentions below.

We believe that use of [SetUp] is generally bad. However, you can implement a parameterless constructor as a direct replacement.

edited May 18, 2023 at 14:40

answered May 18, 2023 at 14:23

pfx

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2 Comments

David Thielen Over a year ago

That does not work if the setup has async code

pfx Over a year ago

@DavidThielen That's true. In case you would need an async setup, than have a look at xUnit's IAsyncLifetime interface having an Task InitializeAsync method. That's rather out of scope for this question.

Cleber Souza · Accepted Answer · 2023-05-18 14:37:48Z

You could call Prepare method in the construtor of the class. So it will be called automatically before tests methods.

public class ClassTest { public ClassTest() { Prepare(); } public void Prepare() { // your logic } [Fact] public void Test1() { //Arrange //Act //Assert } }

Bredjo · Accepted Answer · 2023-05-18 14:24:10Z

In NUnit there is an SetUp attribute that you can use for a method, that should be run before any test.

In xUnit it seems like, that you need to create this by yourself (see here)

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