Live to Code

Sometimes you want to be able to isolate a single test and run it independently of any other tests.

Using Test::Unit

• Run a single test file

  $ ruby -I"lib:test" test/unit/file_load_test.rb
  

• Run a single test within a file

  $ ruby -I"lib:test" test/unit/file_load_test.rb -n test_should_load_a_gz_file
  

Using RSpec

• Run a single test file

  $ rspec spec/models/transmission_outage_spec.rb --format doc
  

• Run a single test within a file (where 56 is the line number of the test to be run)

  $ rspec spec/models/transmission_outage_spec.rb:56 --format doc