Class: RuboCop::Cop::RSpec::Dialect

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
MethodPreference
Defined in:
lib/rubocop/cop/rspec/dialect.rb

Overview

This cop enforces custom RSpec dialects.

A dialect can be based on the following RSpec methods:

  • describe, context, feature, example_group

  • xdescribe, xcontext, xfeature

  • fdescribe, fcontext, ffeature

  • shared_examples, shared_examples_for, shared_context

  • it, specify, example, scenario, its

  • fit, fspecify, fexample, fscenario, focus

  • xit, xspecify, xexample, xscenario, skip

  • pending

  • prepend_before, before, append_before,

  • around

  • prepend_after, after, append_after

  • let, let!

  • subject, subject!

  • expect, is_expected, expect_any_instance_of

By default all of the RSpec methods and aliases are allowed. By setting a config like:

RSpec/Dialect:
  PreferredMethods:
    context: describe

You can expect the following behavior:

Examples:

# bad
context 'display name presence' do
  # ...
end

# good
describe 'display name presence' do
  # ...
end

Constant Summary collapse

MSG =
'Prefer `%<prefer>s` over `%<current>s`.'

Instance Method Summary collapse

Methods inherited from Base

inherited, #on_new_investigation

Methods included from RSpec::Language::NodePattern

#block_pattern, #send_pattern

Instance Method Details

#on_send(node) ⇒ Object


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# File 'lib/rubocop/cop/rspec/dialect.rb', line 52

def on_send(node)
  return unless rspec_method?(node)
  return unless preferred_methods[node.method_name]

  msg = format(MSG, prefer: preferred_method(node.method_name),
                    current: node.method_name)

  add_offense(node, message: msg) do |corrector|
    current = node.loc.selector
    preferred = preferred_method(current.source)

    corrector.replace(current, preferred)
  end
end