Gotchas: Common Traps for the F# n00b

Sunday, January 3rd, 2010

I spent a bunch of time over the holidays getting to know F# a bit better. I think I now consider myself to be truly dangerous with it. A couple of things which repeatedly bit me as I stumbled through learning F# as a n00b.

Conditional Acceptance Tests with

Tuesday, September 8th, 2009

I’ve been using to run some basic acceptance tests. Obviously xUnit is a unit test framework first and foremost but I don’t have a problem with reusing the framework provided you’re really clear about which tests are unit tests and which tests are not. I created an AcceptanceTest ...

Unit Testing Interfaces with xUnit Theories

Wednesday, June 10th, 2009

Someone at p&p just asked me this and I thought it was worth blogging about. Suppose I have an interface IIntegrate that I’ve implemented for a number of concrete types within my application. In principle I can use an xUnit Theory to test the behavior of each interface. Something like this: ...

Dealing With Rounding Errors in Numerical Unit Tests Updated

Tuesday, April 14th, 2009

I’ve updated Dealing With Rounding Errors in Numerical Unit Tests to include some more features based on some of the comments I’ve received. If you used the original source code then best check the updated version which deals with the case where the expected value is zero a lot better.

Dealing With Rounding Errors in Numerical Unit Tests

Monday, December 1st, 2008

I've been writing some unit tests which attempt to verify some mathematical modeling results. Here's a test that creates a physical model (of a universe) containing some stars and verifies the initial energy of the system. [Fact] public void Energy() ...