Project: RSpec Rails 3.4

Publisher: RSpec

backtrace filtering

The following configuration setting will filter out lines in backtraces that come from Rails gems in order to reduce the noise in test failure output:

RSpec.configure do |config|
  config.filter_rails_from_backtrace!
end

rspec will always show the full backtrace output when run with the --backtrace commandline option.

Background Using `filter_rails_from_backtrace!`

Given

a file named "spec/failing_spec.rb" with:

require "rails_helper"

RSpec.configure do |config|
  config.filter_rails_from_backtrace!
end

RSpec.describe "Controller", :type => :controller do
  controller do
    def index
      raise "Something went wrong."
    end
  end

  describe "GET index" do
    it "raises an error" do
      get :index
    end
  end
end

Scenarios

Using the bare `rspec` command

When: I run rspec
Then: the output should contain "1 example, 1 failure"
And: the output should not contain "activesupport"

Using `rspec --backtrace`

When: I run rspec --backtrace
Then: the output should contain "1 example, 1 failure"
And: the output should contain "activesupport"

Last published about 6 years ago by myronmarston.

backtrace filtering

RSpec Rails settings