class RuboCop::Cop::RSpec::SubjectStub


end
end
expect(article.description).to include(‘by an unknown author’)
it ‘indicates that the author is unknown’ do
subject(:article) { Article.new(author: nil) }
describe Article do
# good
end
end
end
expect(article.description).to include(‘by an unknown author’)
allow(article).to receive(:author).and_return(nil)
it ‘indicates that the author is unknown’ do
subject(:article) { Article.new }
context ‘nested subject’ do
subject(:foo) { Article.new }
describe Article do
# bad
end
end
expect(article.description).to include(‘by an unknown author’)
allow(article).to receive(:author).and_return(nil)
it ‘indicates that the author is unknown’ do
subject(:article) { Article.new }
describe Article do
# bad
@example
@see github.com/rubocop-hq/rspec-style-guide#dont-stub-subject<br>@see penelope.zone/2015/12/27/introducing-rspec-smells-and-where-to-find-them.html#smell-1-stubjec<br>@see robots.thoughtbot.com/don-t-stub-the-system-under-test<br><br>when subject is also defined in parent example groups.
Checks nested subject stubs for innermost subject definition
Checks for stubbed test subjects.

def find_all_explicit(node) 

def find_all_explicit(node)
  node.each_descendant(:block).with_object({}) do |child, h|
    name = yield(child)
    next unless name
    outer_example_group = child.each_ancestor(:block).find do |a|
      example_group?(a)
    end
    h[outer_example_group] ||= []
    h[outer_example_group] << name
  end
end

def find_subject_expectations(node, subject_names = [], &block) 

def find_subject_expectations(node, subject_names = [], &block)
  subject_names = [*subject_names, *@explicit_subjects[node]]
  subject_names -= @subject_overrides[node] if @subject_overrides[node]
  names = Set[*subject_names, :subject]
  expectation_detected = message_expectation?(node, names)
  return yield(node) if expectation_detected
  node.each_child_node(:send, :def, :block, :begin) do |child|
    find_subject_expectations(child, subject_names, &block)
  end
end

def on_top_level_group(node) 

def on_top_level_group(node)
  @explicit_subjects = find_all_explicit(node, &method(:subject?))
  @subject_overrides = find_all_explicit(node, &method(:let?))
  find_subject_expectations(node) do |stub|
    add_offense(stub)
  end
end