free_mutant/spec/unit/mutant/matcher/chain_spec.rb
Markus Schirp 6df5811a87 Use RSpec as receiver for rspec DSL methods
* I dislike the global infection RSpec does. This commit is a first step
  to get a rid of it.
* Also remove the need for `require 'spec_helper` in each spec file with
  adjusting `.rspec`.
2014-08-10 21:04:07 +00:00

32 lines
806 B
Ruby

RSpec.describe Mutant::Matcher::Chain do
let(:object) { described_class.new(matchers) }
describe '#each' do
let(:yields) { [] }
subject { object.each { |entry| yields << entry } }
let(:matchers) { [matcher_a, matcher_b] }
let(:matcher_a) { [subject_a] }
let(:matcher_b) { [subject_b] }
let(:subject_a) { double('Subject A') }
let(:subject_b) { double('Subject B') }
# it_should_behave_like 'an #each method'
context 'with no block' do
subject { object.each }
it { should be_instance_of(to_enum.class) }
it 'yields the expected values' do
expect(subject.to_a).to eql(object.to_a)
end
end
it 'should yield subjects' do
expect { subject }.to change { yields }.from([]).to([subject_a, subject_b])
end
end
end