The RSpec Toolbox

From WindyCityRails 2012

Presenter: David Chelimsky

Notes

From @benjaminoakes:

• DRW Trading Group (hiring)
• Rspec2
  • Micronaut: Each example has its own metadata
  • New basis for Rspec

Basically the Command pattern:

example_group = describe Something { }

example = it 'does something' { }

• Used in output at command line, etc.
• rspec has formatter methods (there's an protocol with an interface)
  • Example formatters:
    • Documentation
    • HTML
    • 3rd party
      • Instafail: shows you error messages early
      • Fuubar
      • nyan cat
• Focusing tools
  • autotest, guard -- monitor changes to files and re-run specs
  • Sometimes you don't want it to rerun everything again (e.g., if you TDD)... so, focus!

# FIXME: there's a config line that goes with this

it 'something', :focus => true do
end

Or exclude stuff:

config.filter_run_excluding :slow => true

it 'something', :slow => true do
end

Shorthand:

# Will be default in the future...
config.treat_symbols_as_metadata_keys_with_true_values = true

it 'something', :slow do
end

it 'something', :focus do
end

conditional filters

describe Thing, :if => RUBY_VERSON >= "1.9" do
end

describe Thing, :if => ENV['GENERATE'] do
end