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require_relative '../../spec_helper'
require 'strscan'
version_is StringScanner::Version, "3.0.5" do # ruby_version_is "3.2"
describe "StringScanner#named_captures" do
before do
@s = StringScanner.new('Fri Dec 12 1975 14:39')
end
it "returns a hash of names and matched substrings for named capturing groups in a regular expression of the most recent matching" do
@s.exist?(/(?<wday>\w+) (?<month>\w+) (?<day>\d+)/)
@s.named_captures.should == {"wday" => "Fri", "month" => "Dec", "day" => "12"}
end
it "returns {} if there are no named capturing groups" do
@s.exist?(/(\w+) (\w+) (\d+)/)
@s.named_captures.should == {}
end
# https://github.com/ruby/strscan/issues/132
ruby_bug "", "3.2"..."3.3" do # fixed in strscan v3.0.7
it "returns {} if there is no any matching done" do
@s.named_captures.should == {}
end
end
it "returns nil for an optional named capturing group if it doesn't match" do
@s.exist?(/(?<wday>\w+) (?<month>\w+) (?<day>\s+)?/)
@s.named_captures.should == {"wday" => "Fri", "month" => "Dec", "day" => nil}
end
end
end
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