How do I shorten the backtrace for a test failure in RSpec 2?

Question

When my specs hit an error, I get a message like this:

Vendor should reject duplicate names
     Failure/Error: user_with_duplicate_email.should_not be_valid         


        

Answer 1

In spec_helper.rb you can filter backtrace using the following code snippet:

RSpec.configure do |config|
  # RSpec automatically cleans stuff out of backtraces;
  # sometimes this is annoying when trying to debug something e.g. a gem

  # RSpec 3:
  # config.backtrace_exclusion_patterns = [
  # RSpec 2:
  config.backtrace_clean_patterns = [
    /\/lib\d*\/ruby\//,
    /bin\//,
    /gems/,
    /spec\/spec_helper\.rb/,
    /lib\/rspec\/(core|expectations|matchers|mocks)/
  ]
end