47 lines
1.3 KiB
Ruby
47 lines
1.3 KiB
Ruby
RSpec.describe Mutant::Registry do
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let(:lookup) { object.lookup(type) }
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let(:object) { described_class.new }
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let(:mutator) { class_double(Mutant::Mutator) }
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let(:node) { s(:true) }
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let(:expected_arguments) { [node, nil] }
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def register_mutator
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object.register(type, mutator)
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end
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context 'on registered type' do
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subject { register_mutator }
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let(:type) { :true }
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before { subject }
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it 'returns registered mutator' do
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expect(lookup).to be(mutator)
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end
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it_behaves_like 'a command method'
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context 'when registered twice' do
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it 'fails upon registration' do
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expect { register_mutator }.to raise_error(described_class::RegistryError, 'Duplicate type registration: :true')
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end
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end
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end
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context 'on unknown type' do
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let(:type) { :unknown }
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it 'raises error' do
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expect { lookup }.to raise_error(described_class::RegistryError, 'No entry for: :unknown')
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end
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end
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context 'when registering an invalid node type' do
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let(:type) { :invalid }
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it 'raises error' do
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expect { register_mutator }.to raise_error(described_class::RegistryError, 'Invalid type registration: :invalid')
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end
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end
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end
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