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Contents
require File.expand_path("../../helpers", __FILE__)
class ExpressionSubexpression < Test::Unit::TestCase
def test_subexpression_ts_te
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]
assert_equal span[0], sequence.ts
assert_equal span[1], sequence.te
end
end
def test_subexpression_nesting_level
root = RP.parse(/a(b(c\d|[ef-g[h]]))/)
tests = {
'a' => 1,
'b' => 2,
'|' => 3,
'c\d' => 4, # first alternative
'c' => 5,
'\d' => 5,
'[ef-g[h]]' => 4, # second alternative
'e' => 5,
'-' => 5,
'f' => 6,
'g' => 6,
'h' => 6,
}
root.each_expression do |exp|
next unless (expected_nesting_level = tests.delete(exp.text))
assert_equal exp.nesting_level, expected_nesting_level
end
assert tests.empty?
end
def test_subexpression_dig
root = RP.parse(/(((a)))/)
assert_equal '(((a)))', root.dig(0).to_s
assert_equal 'a', root.dig(0, 0, 0, 0).to_s
assert_nil root.dig(0, 0, 0, 0, 0)
assert_nil root.dig(3, 7)
end
end
Version data entries
7 entries across 7 versions & 2 rubygems