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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Namespaces::Traversal::TrieNode, feature_category: :global_search do
describe '.new' do
it 'initializes with empty children and end set to false' do
trie = described_class.new
expect(trie.children).to be_empty
expect(trie.end).to be false
end
end
describe '.build' do
it 'creates a trie from traversal IDs' do
traversal_ids = [[1, 2], [1, 3], [2, 4]]
trie = described_class.build(traversal_ids)
expect(trie).to be_a(described_class)
expect(trie.children.keys).to contain_exactly(1, 2)
expect(trie.children[1].children.keys).to contain_exactly(2, 3)
expect(trie.children[2].children.keys).to contain_exactly(4)
end
it 'does not create duplicate branches' do
traversal_ids = [[1, 2], [1, 2]]
trie = described_class.build(traversal_ids)
expect(trie.children[1].children[2].end).to be true
expect(trie.children[1].children[2].children).to be_empty
end
end
describe '#prefix_search' do
let(:trie) { described_class.build([[1, 2, 3], [1, 2, 4], [1, 3]]) }
it 'returns all matching traversal IDs' do
result = trie.prefix_search([1, 2])
expect(result).to contain_exactly([1, 2, 3], [1, 2, 4])
end
it 'returns an empty array for non-existent prefix' do
result = trie.prefix_search([4])
expect(result).to be_empty
end
end
describe '#covered?' do
let(:trie) { described_class.build([[1, 2], [3, 4]]) }
it 'returns true for covered traversal ID' do
expect(trie.covered?([1, 2, 3])).to be true
end
it 'returns true for included traversal ID' do
expect(trie.covered?([1, 2])).to be true
end
it 'returns false for non-covered traversal ID' do
expect(trie.covered?([1, 3])).to be false
end
end
describe '#to_a' do
it 'returns an array of all traversal IDs in the trie' do
trie = described_class.build([[1, 2, 3], [1, 2, 4], [1, 3], [4, 5]])
result = trie.to_a
expect(result).to contain_exactly([1, 2, 3], [1, 2, 4], [1, 3], [4, 5])
end
it 'returns an empty array for an empty trie' do
trie = described_class.new
result = trie.to_a
expect(result).to be_empty
end
it 'handles nested branches correctly' do
trie = described_class.build([[1, 2, 3, 4], [1, 2, 3, 5], [1, 2, 4]])
result = trie.to_a
expect(result).to contain_exactly([1, 2, 3, 4], [1, 2, 3, 5], [1, 2, 4])
end
end
end
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