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require 'spec_helper'
RSpec.describe(Regexp::Expression::Conditional) do
specify('Conditional#condition, #branches') do
conditional = RP.parse(/(?<A>a)(?(<A>)T|F)/)[1]
expect(conditional.condition).to eq conditional[0]
expect(conditional.branches).to eq conditional[1..2]
end
specify('Condition#referenced_expression') do
root = RP.parse(/(?<A>a)(?(<A>)T|F)/)
condition = root[1].condition
expect(condition.referenced_expression).to eq root[0]
expect(condition.referenced_expression.to_s).to eq '(?<A>a)'
root = RP.parse(/(a)(?(1)T|F)/)
condition = root[1].condition
expect(condition.referenced_expression).to eq root[0]
expect(condition.referenced_expression.to_s).to eq '(a)'
end
specify('parse conditional excessive branches') do
regexp = '(?<A>a)(?(<A>)T|F|X)'
expect { RP.parse(regexp) }.to raise_error(Conditional::TooManyBranches)
end
end
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