Contents

RSpec.describe Mutant::Matcher::Filter do
  let(:object) { described_class.new(matcher, predicate) }

  describe '#each' do
    let(:yields) { [] }
    subject { object.each { |entry| yields << entry } }

    let(:matcher)   { [subject_a, subject_b] }
    let(:predicate) { ->(node) { node.eql?(subject_a) } }

    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])
    end
  end
end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
mutant-0.8.0	spec/unit/mutant/matcher/filter_spec.rb
mutant-0.7.9	spec/unit/mutant/matcher/filter_spec.rb
mutant-0.7.8	spec/unit/mutant/matcher/filter_spec.rb
mutant-0.7.7	spec/unit/mutant/matcher/filter_spec.rb
mutant-0.7.6	spec/unit/mutant/matcher/filter_spec.rb
mutant-0.7.5	spec/unit/mutant/matcher/filter_spec.rb