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PL/SQL Unit Testing
    with Ruby
Raimonds Simanovskis




         github.com/rsim
What is good code?

                     Test
    Correct
                 functionality!
                     Test
  Fast enough
                 performance!
                   Test after
  Maintainable
                   changes!
How is it done?
       try something...

                  dbms_output.put_line(...)

  it is obvious that
there are no bugs :)

   testers should test,
     that’s their job
What are typical
      problems?
       “trying” and not testing

       tests are not repeatable

     manual verification of results

testing is done too late in development
Types of tests
      unit tests

   integration tests
                                programmer’s
performance & load tests        responsibility

exploratory & usability tests
Test Driven
Development
    Write test


     Run test


    Write code


     Run test


    Refactoring
Good unit tests
          Automatic, run fast

Wide code coverage including edge cases

              Repeatable

   Independent from execution order

Using real and understandable test data
How to do it
when programming in
      PL/SQL ?
utPLSQL
created by Steven Feuerstein, 1999

based on “xUnit”-style frameworks

    not maintained anymore :(
Example
Substring from start
 until end position
Tests
Results
Visual testing tools

Quest Code Tester   SQL Developer 2.1
Why used just by
      few?
 too large / too verbose test code?

   hard to read, too much noise?

    hard to test complex cases?

no best practices how to write tests?

nobody is using, why should I use?
ruby-plsql-spec
         ideal language for writing tests



 RSpec       powerful testing tools
             with “readable” syntax

                library for calling
ruby-plsql     PL/SQL procedures
                    from Ruby
ruby-plsql-spec
     Demo
Benefits
       compact, readable syntax

powerful features also for complex tests

 best practices from Ruby community

   based on needs from real projects

    opensource – “free as in beer” :)
Links
http://blog.rayapps.com/2009/11/27/oracle-
        plsql-unit-testing-with-ruby/

    http://blog.rayapps.com/2010/01/06/
screencasts-of-oracle-plsql-unit-testing-with-
                    ruby/

   http://github.com/rsim/ruby-plsql-spec

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PL/SQL unit testing with Ruby

  • 2. Raimonds Simanovskis github.com/rsim
  • 3. What is good code? Test Correct functionality! Test Fast enough performance! Test after Maintainable changes!
  • 4. How is it done? try something... dbms_output.put_line(...) it is obvious that there are no bugs :) testers should test, that’s their job
  • 5. What are typical problems? “trying” and not testing tests are not repeatable manual verification of results testing is done too late in development
  • 6. Types of tests unit tests integration tests programmer’s performance & load tests responsibility exploratory & usability tests
  • 7. Test Driven Development Write test Run test Write code Run test Refactoring
  • 8. Good unit tests Automatic, run fast Wide code coverage including edge cases Repeatable Independent from execution order Using real and understandable test data
  • 9. How to do it when programming in PL/SQL ?
  • 10. utPLSQL created by Steven Feuerstein, 1999 based on “xUnit”-style frameworks not maintained anymore :(
  • 11. Example Substring from start until end position
  • 12. Tests
  • 14. Visual testing tools Quest Code Tester SQL Developer 2.1
  • 15. Why used just by few? too large / too verbose test code? hard to read, too much noise? hard to test complex cases? no best practices how to write tests? nobody is using, why should I use?
  • 16. ruby-plsql-spec ideal language for writing tests RSpec powerful testing tools with “readable” syntax library for calling ruby-plsql PL/SQL procedures from Ruby
  • 18. Benefits compact, readable syntax powerful features also for complex tests best practices from Ruby community based on needs from real projects opensource – “free as in beer” :)
  • 19. Links http://blog.rayapps.com/2009/11/27/oracle- plsql-unit-testing-with-ruby/ http://blog.rayapps.com/2010/01/06/ screencasts-of-oracle-plsql-unit-testing-with- ruby/ http://github.com/rsim/ruby-plsql-spec