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shared_examples_for 'a mutator' do
subject { object.each(node) { |item| yields << item } }
let(:yields) { [] }
let(:object) { described_class }
unless instance_methods.map(&:to_s).include?('node')
let(:node) { source.to_ast }
end
it_should_behave_like 'a command method'
context 'with no block' do
subject { object.each(node) }
it { should be_instance_of(to_enum.class) }
let(:expected_mutations) do
mutations.map do |mutation|
if mutation.respond_to?(:to_ast)
mutation.to_ast.to_sexp
else
mutation
end
end.to_set
end
it 'generates the expected mutations' do
subject = self.subject.map(&:to_sexp).to_set
unless subject == expected_mutations
message = "Missing mutations: %s\nUnexpected mutations: %s" %
[expected_mutations - subject, subject - expected_mutations ].map(&:to_a).map(&:inspect)
fail message
end
end
end
end
shared_examples_for 'a noop mutator' do
let(:mutations) { [] }
it_should_behave_like 'a mutator'
end
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