39 lines
969 B
Ruby
39 lines
969 B
Ruby
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RSpec.describe Mutant::AST do
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let(:object) { described_class }
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describe '.find_last_path' do
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subject { object.find_last_path(root, &block) }
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let(:root) { s(:root, parent) }
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let(:child_a) { s(:child_a) }
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let(:child_b) { s(:child_b) }
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let(:parent) { s(:parent, child_a, child_b) }
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def path
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subject.map(&:type)
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end
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context 'when no node matches' do
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let(:block) { ->(_) { false } }
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it { should eql([]) }
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end
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context 'when one node matches' do
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let(:block) { ->(node) { node.equal?(child_a) } }
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it 'returns the full path' do
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expect(path).to eql([:root, :parent, :child_a])
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end
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end
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context 'when two nodes match' do
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let(:block) { ->(node) { node.equal?(child_a) || node.equal?(child_b) } }
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it 'returns the last full path' do
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expect(path).to eql([:root, :parent, :child_b])
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end
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end
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end
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end
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