[Test Tools] BDD Driven design and test

Hello People,

We are implementing the unity test tools into our project. we migrate our tests from Specflow and NUnit.
the Unit tests are really easy to put into the test framework.

the Specflow test we found a little difficult.
I implement the tests in a bdd specific way (Given, When, Then). For example we have defined the following Specflow scenario (short ctrl-i shows a infodialog box) :

Scenario: Show about information
When I activate about
Then the about message is visible

I have migrated this into unity like this:



I have create a new assertion component where i can choose the test :


The test it self implements a TestBase class that gives me a Given, When, Then like so :

Code (csharp):

1.  
2. public class AboutWindowTests : TestBase
3. {
4.     public override void Given()
5.     {
6.         TestingProxy.Instance.InitializeTestingMode();
7.     }
8.  
9.     public override void When()
10.     {
11.         TestingProxy.Instance.SetAboutActivated(1);
12.     }
13.  
14.     public override void Then()
15.     {
16.         var systemInformation = TestingProxy.Instance.GetSystemInformation();
17.         var messageBox = TestingProxy.Instance.GetMessageBox();
18.        
19.         Assert.IsNot(messageBox, null);
20.         Assert.Is(messageBox.IsVisible, true);
21.         Assert.IsNot(systemInformation, null);
22.      
23.         Assert.Is(messageBox.Title, systemInformation.InformationalVersion);
24.         Assert.IsContaining(messageBox.Message, systemInformation.Company);
25.         Assert.IsContaining(messageBox.Message, systemInformation.Product);
26.         Assert.IsContaining(messageBox.Message, systemInformation.Copyright);
27.     }
28. }
29.  

This all works now, and i hope to use this more and more. i would like to discuss what you think about this way of testing and perhaps have any suggestions or improvements.

Second i would like to discuss how you implement tests for GUI related item.
For example, When i move mouse to position of button and click, then my window is shown.
There is (from what i know) no way to set the mouse position in unity and trigger a 'click'...

Best regards,
Martijn

 

I made an custom component which inherits from AssertionComponent, in the start i use the following :

Code (csharp):

1.  
2.   IEnumerator RunTest()
3.         {
4.             yield return new WaitForEndOfFrame();
5.             Action.Given();
6.             yield return new WaitForEndOfFrame();
7.             Action.When();
8.  
9. #if UNITY_EDITOR
10.             if (PauseAfterWhen)
11.                 EditorApplication.isPaused = true;
12. #endif
13.  
14.             yield return new WaitForEndOfFrame();
15.             Action.Then();
16.             yield return new WaitForEndOfFrame();
17.             Action.Finally();
18.             checksPerformed++;
19.         }
20.  

It's all build on top of the UTT , i try to not touch the original test tools files so that i can update them without loosing edits i make to them.However i had to make one edit . this was caused because i inherent from AssertionComponent and implement Action different ,
public new TestBase Action .

this caused an null-ref in the AssertionListRenderer class.

Code (csharp):

1.      AssertionListRenderer
2.         protected virtual void PrintFoldedAssertionLine (AssertionComponent assertionComponent)
3.         {
4.             if (assertionComponent.Action == null) return; //ADDED
5.                 ......
6.  

Just made an extra 'feature'
When i define an test an use public variables, they show up in the editor and can be edited (was harder then it looks):
i use reflection to get/set them. this way i can reuse the test with different inputs.

Code (csharp):

1.  
2. public class TestPosition : TestBase
3. {
4.     public int X = 100;
5.     public int Y = 50;
6.  
7.     public override void Given()
8.     {
9.        
10.     }
11.