Start ruby debugger if rspec test fails

Question

Often, when a test fails, I spend quite sometime trying to figure out the what caused it to fail. It\'d be useful if RSpec could kick off a Ruby debugger when the test fails, so

Answer 1

I like @jon-rowe's solution (no additional gems needed) with a slight edit: I really don't care about other errors as much as RSpec::Expectations::ExpectationNotMetError.

  config.around(:each) do |example|
    example.run.tap do |result|
      debugger if result.is_a?(RSpec::Expectations::ExpectationNotMetError)
    end
  end