Question

Imagine I have a test like this:

class MyUnitTest < Test::Unit::TestCase
  def test_first
    # test code here
  end

  def test_second
    # test code here
  end

  def test_third
    # test code here
  end
end

My test cases are destructive, and I need to regenerate the input in between tests. Therefore, it would be useful to run only one test case at a time. Currently, my approach is to comment tests that I don’t want executed, but surely there must be a better way?

So, for example, how do I run only test_first when I execute my test?

Answer 1

Use --name PATTERN argument in order to filter out test names you want to run.

D:\Projects>ruby test.rb
Loaded suite test
Started
...
Finished in 0.000000 seconds.

3 tests, 0 assertions, 0 failures, 0 errors, 0 skips

Test run options: --seed 39768

D:\Projects>ruby test.rb -n test_first
Loaded suite test
Started
.
Finished in 0.000000 seconds.

1 tests, 0 assertions, 0 failures, 0 errors, 0 skips

Test run options: --seed 53891 --name "test_first"