My hobbyist coding updates and releases as the mysterious "Mr. Tines"

Tuesday, 27 May 2008

Integrating .Net with Erlang, part 7

Another update, after work during the holiday weekend.

By using a lot of spare cycles, I found a test case for the division code not previously exercised:

9659964175213286916418497243082984930780677040655778513759952405592597918851617939992802011783376153721017703858175 / 3248063261698017931917474008545947342556579729240422363527 = 2974068974926080862795323621370295193198999568425344221053

Also made the astoundingly obvious discovery that I needed the real Erlang port mapper dæmon running, so put a unit test in which spawns an Erlang process to contact. It works fine in NUnit-gui, but fails every time in the build time coverage plus test cycle, so is labelled as [Explicit]. I need to to write at least one test that handles the call in the other direction, but this is getting close to as far as can easily be done in unit test form.

And it's getting close to my usual summer break from coding in the evenings, so this is probably close to being "it" for a while.

Tuesday, 20 May 2008

Integrating .Net with Erlang, part 6

Time for a major drop of the code.

It's been tidied up to remove most of the deprecation and to start unifying the comments as .Net XML. The BigInteger class has had a number of bugs found and fixed by unit testing (initialization, big left shifts, hex-string), and been made into a struct to reflect its value nature.

Pretty much all (say, 80%) of the stuff that can be tested statically in isolation has been, and the code has been revised with dependency injection and interfaces to do that (including a bug-fixed, back ported (to C# 2.0) version of NullObject.For<T>). Further testing will require some more extensive test set-up, such as spinning up a Java peer in a separate thread and talking TCP with it.

Code coverage is currently just over 60% for the Otp library, just over 70% for the ZLib code, for the static testing; beyond upgrading the wire types and the constants, the upgrade to 1.4 spec from 1.2 is not really begun.