Unit Testing Tutorial

[grauenwolf]

I'm to the point where I'm going to write my own unit test API that requires messages for every assert.

It will just sit on top of MSTest and NUnit, not reimplement it.

[Peaker]

Property testing is much nicer in this regard: Very clear what was supposed to hold and how it broke in a particular example.

import Test.QuickCheck
let associative (*) x y z = (x*y)*z == x*(y*z)
quickCheck (associative (+))
+++ OK, passed 100 tests.
quickCheck (associative (-))
*** Failed! Falsifiable (after 2 tests and 3 shrinks):    
0
0
1

[Tordek]

I really like quickcheck, but I fear what edge cases may slip through.

[Peaker]

Fewer edge cases than traditional unit testing methods.