Just curious. Whether your primary language is Java, C++, PHP or another language, what do you use to write your tests?

What do you mean by your question? I mean most platforms provide ways to write tests. .

So for java, there is JUnit, TestNG, etc (though these first two seem to be the most popular.)

For Ruby, there are many.

For PHP, Python, C++, C, C#, etc I don't know what people use to test their code.

Basically, just curious about what tools people have found useful. Maybe you started off with JUnit but then moved to TestNG for reasons X, Y, and Z. Etc, etc.

Hmm i see ur point. Well i kinda only test when working with Ruby/Ruby on Rails and Java. Those are the only two langs that require testing(my main projects are implemented in either of them). For Java I use JUnit. Ruby i sometimes just test with normal Ruby and other times with RSpec. For Rails, I do a lot of different tests so use different techniques at once(cause i have to do the 3 tests). However, I use the normal inbuilt test technique(assertions and the likes) and other times(when the project kinda large) RSpec automated(cause am a fan of TDD) with Guard or Autotest.

For C# I test with Microsoft Unit Test Framework or NUnit and the lovely framework, RhinoMock (for handling mock,stub,dummy) .
For PHP i prefer PHPUnit and of course JNUnit for java.

For Silverlight RhinoMock Sivlerlight Framework (for handling async calls mostly with WCF).

Yet it depends on the kind of project.