21 lines
719 B
Ruby
21 lines
719 B
Ruby
# frozen_string_literal: true
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RSpec.shared_examples 'hierarchy with traversal_ids' do
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# A convenient null node to represent the parent of root.
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let(:null_node) { double(traversal_ids: []) }
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# Walk the tree to assert that the current_node's traversal_id is always
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# present and equal to it's parent's traversal_ids plus it's own ID.
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def validate_traversal_ids(current_node, parent = null_node)
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expect(current_node.traversal_ids).to be_present
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expect(current_node.traversal_ids).to eq parent.traversal_ids + [current_node.id]
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current_node.children.each do |child|
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validate_traversal_ids(child, current_node)
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end
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end
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it 'will be valid' do
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validate_traversal_ids(root)
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end
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end
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