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Automated Testing
 

Automated Testing

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    Automated Testing Automated Testing Presentation Transcript

    • Automated Testing John Paulett jhcore.com 4.17.2009
    • testing sucks
    • buggy code sucks more
    • being an example on thedailywtf.com sucks the most
    • types of testing
    • types of testing unit
    • functional types of testing unit
    • security usability scaling load regression functional types of testing smoke accessibility requirement unit acceptance touch recovery
    • security usability scaling load regression functional types of testing smoke and more ... accessibility requirement unit acceptance touch recovery
    • security usability scaling load regression functional types of testing smoke and more ... accessibility requirement unit acceptance touch recovery
    • security usability scaling load regression functional types of testing smoke and more ... accessibility requirement unit acceptance touch recovery
    • unit testing
    • smallest testable part method / function level assertions
    • junit test case import junit.framework.TestCase; public class TestMath extends TestCase { public void testSquare() { assertEquals(16, Math.square(4)); } }
    • test drive development public class Math { public static int square(int x) { return x; } }
    • failure
    • fix the bug public class Math { public static int square(int x) { return x * x; } }
    • w00t!
    • forces better design separate presentation from business logic from data access! “mock” out what your not testing fake data access class when testing business logic
    • every language has a unit testing framework even php
    • regression testing
    • know when things break
    • a test for every build (and a build for every commit)
    • automate your build
    • hudson hudson.dev.java.net
    • functional testing
    • selenium seleniumhq.org
    • load testing
    • jmeter jakarta.apache.org/jmeter/
    • requirements testing
    • fitnesse fitnesse.org
    • test coverage
    • how much code is tested eclemma.org
    • wuss excuses
    • wuss: i'm the only one on the project
    • winner: i'll be ready for when more people join winner: i want my code to work
    • wuss: just for my research, not production code
    • winner: i don't want to look like a fool publishing buggy results
    • wuss: i test it by using it
    • winner: i realize i never even get close to testing all of it after every change
    • wuss: it is already 1M LOC, with no tests, it's too late
    • winner: i'll add a couple tests when i fix a bug
    • key steps to start 1) unit test on all new code ● when you find a bug in existing code ● work towards 100% branch coverage ● 2) automate your build, test every commit
    • est finis slides at jhcore.com write at least 1 unit test next time you code get your test on!