WinForms application is not rendered when debugging a test

Having a test like:

[Test]
public void Test()
{
    Application.Run(new Form());
}

works fine when run without debugging (form is visible) however when run with debugging, the form is not visible.

Possibly related to: https://github.com/nunit/nunit3-vs-adapter/pull/42 ?

• NUnit: v3.12
• NUnit3TestAdapter: v3.13
• Visual Studio 2017 Professional (15.9.5)
• .NET Framework 4.6.2

[jnm2]

Fyi @OsirisTerje, I reproduced this with the project I had open in VS (16.1)

[christianjunk]

@christianjunk Thanks! That makes sense! Do you mean it worked as it should with adding that? If so, it’s a good workaround.

@OsirisTerje This solution worked for me as expected. According to NUnit3 I have edited my answer and added the following line:

[Test, Apartment(ApartmentState.STA)]

https://github.com/nunit/docs/wiki/Apartment-Attribute