Reenable testBuildDirectoryContainsCompiledClasses unit test

This unit test was disabled because it actually did not build the
project. Since 015ecfd projects can be built successfully, so this test
now passes.
Merge pull request #253 from WonderCsabo/reenableTestBuildDirectoryContainsCompiledClasses

Reenable testBuildDirectoryContainsCompiledClasses unit test