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