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Contents
require 'spec_helper'
RSpec.describe(Regexp::Expression::Subexpression) do
specify('#ts, #te') do
regx = /abcd|ghij|klmn|pqur/
root = RP.parse(regx)
alt = root.first
{ 0 => [0, 4], 1 => [5, 9], 2 => [10, 14], 3 => [15, 19] }.each do |index, span|
sequence = alt[index]
expect(sequence.ts).to eq span[0]
expect(sequence.te).to eq span[1]
end
end
specify('#nesting_level') do
root = RP.parse(/a(b(\d|[ef-g[h]]))/)
tests = {
'a' => 1,
'b' => 2,
'\d|[ef-g[h]]' => 3, # alternation
'\d' => 4, # first alternative
'[ef-g[h]]' => 4, # second alternative
'e' => 5,
'f-g' => 5,
'f' => 6,
'g' => 6,
'h' => 6,
}
root.each_expression do |exp|
next unless (expected_nesting_level = tests.delete(exp.to_s))
expect(expected_nesting_level).to eq exp.nesting_level
end
expect(tests).to be_empty
end
specify('#dig') do
root = RP.parse(/(((a)))/)
expect(root.dig(0).to_s).to eq '(((a)))'
expect(root.dig(0, 0, 0, 0).to_s).to eq 'a'
expect(root.dig(0, 0, 0, 0, 0)).to be_nil
expect(root.dig(3, 7)).to be_nil
end
end
Version data entries
20 entries across 14 versions & 6 rubygems