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require_relative '../../spec_helper'
describe "MatchData#names" do
it "returns an Array" do
md = 'haystack'.match(/(?<yellow>hay)/)
md.names.should be_an_instance_of(Array)
end
it "sets each element to a String" do
'haystack'.match(/(?<yellow>hay)/).names.all? do |e|
e.should be_an_instance_of(String)
end
end
it "returns the names of the named capture groups" do
md = 'haystack'.match(/(?<yellow>hay).(?<pin>tack)/)
md.names.should == ['yellow', 'pin']
end
it "returns [] if there were no named captures" do
'haystack'.match(/(hay).(tack)/).names.should == []
end
it "returns each name only once" do
md = 'haystack'.match(/(?<hay>hay)(?<dot>.)(?<hay>tack)/)
md.names.should == ['hay', 'dot']
end
it "equals Regexp#names" do
r = /(?<hay>hay)(?<dot>.)(?<hay>tack)/
'haystack'.match(r).names.should == r.names
end
end
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