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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
ruby_version_is "3.1" do
describe "MatchData#match_length" do
it "returns the length of the corresponding match when given an Integer" do
md = /(.)(.)(\d+)(\d)/.match("THX1138.")
md.match_length(0).should == 6
md.match_length(1).should == 1
md.match_length(2).should == 1
md.match_length(3).should == 3
md.match_length(4).should == 1
end
it "returns nil on non-matching index matches" do
md = /\d+(\w)?/.match("THX1138.")
md.match_length(1).should == nil
end
it "returns the length of the corresponding named match when given a Symbol" do
md = 'haystack'.match(/(?<t>t(?<a>ack))/)
md.match_length(:a).should == 3
md.match_length(:t).should == 4
end
it "returns nil on non-matching index matches" do
md = 'haystack'.match(/(?<t>t)(?<a>all)?/)
md.match_length(:t).should == 1
md.match_length(:a).should == nil
end
end
end
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