New toys in dev's
testing toolbelt
Paweł Łukasik
LoGeek - Wrocław, 22.05.2014
TESTS
... and
problems I have
with them
About.me
- passionate-programmer
- Wroc.NET co-founder & UG speaker
- > 10 yrs writing code
- almost 5 yrs with my own company
TESTS
TESTS
are
outside our flow
Testing process today (TDD style)
- Write the test
- Stop and run the test
- Write the code under test
- Stop and run tests
- Refactor the code under test
- Stop and run tests
- Drink some coffee and repeat
TESTS
are painful
...
to write
a good one
TESTS
are important
Is
there
any solution?
nCRUNCH
NCrunch is an automated concurrent testing tool for Visual Studio.
Testing process with nCrunch
- Write the test
- Write the code under test
- Refactor the code under test
-
Be happy, drink some coffee and repeat!
- Write the test
- Write the code under test
- Refactor the code under test
- Be happy, drink some coffee and repeat!
Last but not least...
Über-nCrunch
TESTS
no longer
disturbs
our flow
Any solutions
for the painfulness
problem?
PEX
Automated white-box testing for .NET
How does PEX works?
- Chooses a branch that was not covered previously.
- Builds a constraint system that describes how to reach that branch.
- Uses a constraint solver to determine new test inputs that fulfill the constraints, if any exist.
What it
doesn't do?
TESTS
no longer
painful
(to write a good one)
TESTS
are
still
important :)
.SUM()
- No, I'm not selling those products :)
- Yes, nCrunch is pricey - if you like the idea - try MightyMoose
- PEX has it drawbacks but they working on them - new code name: "Code Digger"
- If you like puzzles - try pexforfun.com
Questions?
Thank you!
Sources:
Mars Climate Orbiter - http://www.jpl.nasa.gov/missions/web/mars_climate_orbiter.jpg