RSpec: Tagging examples and example groups

Copydescribe ReportCreator, slow: true do
  # ..
end

describe ReportCreator do
  it 'generates reports', slow: true do
    # ...
  end
end

Copyrspec --tag slow
rspec -t slow

# Using the parallel_tests gem
rake "parallel:spec[,,--tag slow]"

Copyrspec --tag ~slow # note the ~
rspec -t ~slow

# Using the parallel_tests gem
rake "parallel:spec[,,--tag ~slow]"

Copydescribe ReportCreator do
  it 'generates reports', speed: 'slow' do
    # ...
  end
end

rspec . --tag speed:slow # Only run examples tagged with speed: 'slow'
rspec . --tag ~speed:slow # Run examples except the ones tagged with speed: 'slow'

CopyRSpec.configure do |config|
  config.before(:each, slow: true) do
    # Do one thing here
  end
end

CopyRSpec.configure do |config|
  config.include SlowHelpers, type: :slow
end