All of the tests for BioRuby classes in bio/, bio/db/ and bio/lib/ are executed correctly, Covering about 90% of total lines.
Although Ruby 1.8.7 outputs some warning, They pass all the tests.
I have skipped other classes in bio/appl/ and bio/io, because of dependency on external library or web services.
I haven't worked on the tests for the classes in bio/shell/, since I don't understand how they are composed.
A test in bio/, bio/db/ and bio/sequence/ with Ruby 1.9.2 says that BioRuby has some errors about Compatibility of Float, String and methods.
However, almost the classes pass the tests.