CODEWITHSUNDEEP
c#nunit
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Reputation: 1120

Is there a way to send a value from a unit test to another unit test?

I have a function which calculates some stuff and inputs it into a DB. This setup is important for all unit tests because they need some data to work on.

Sometimes i need to "flush" the DB, so all the unit tests point to the wrong ID.

Normally i just run the setup first and then change all the unit tests but this is taking to long tbh. Is there a way to automate this?

I would like to pass the generated ID into other unit tests.

So the idea was something like this:

[SetupFixture]
public class{
    [Test]
    public void SetupDB(){
        setup();

        //now marking the result somehow so other tests can pick the result up
        return ID; //<--
    }
}

public class OtherTests{
    [Test]
    [Get_ID_From_SetupDB]
    public void testBaseOnID(int ID){
        //we do stuff now with ID
    }
}

PS: i have no problem switching the testing framework if you know a framework which can do this

Upvotes: 2

Views: 1839

Answers (1)

Kajetan Kazimierczak
Kajetan Kazimierczak

Reputation: 59

Tests should be independent and you should generally never pass values between tests.

What you can do in your case, if all the tests are in the same class, is to have a variable in your class to hold the id and some global setup function that sets everything up and sets the variable to the correct id. In NUnit there is the [OneTimeSetUp] atribute for that.

[TestFixture]
public class MyTests 
{
private int _testId;

[OneTimeSetUp]
public void SetItUp()
{
...
_testId = whatever;
}
[Test]
public void TestOne()
{
var whatever = _testId;
...
}
}

Upvotes: 2

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