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require 'timeout'
module Support
module Pattern
extend RSpec::Matchers::DSL
def pattern(pattern, options = nil, &block)
description = "pattern %p" % pattern
if options
description << " with options %p" % [options]
instance = subject_for(pattern, options)
else
instance = subject_for(pattern)
end
context description do
subject(:pattern, &instance)
its(:to_s) { should be == pattern }
its(:inspect) { should be == "#<#{described_class}:#{pattern.inspect}>" }
its(:names) { should be_an(Array) }
its(:to_templates) { should be == [pattern] } if described_class.name == "Mustermann::Template"
example 'string should be immune to external change' do
subject.to_s.replace "NOT THE PATTERN"
subject.to_s.should be == pattern
end
instance_eval(&block)
end
end
def subject_for(pattern, *args)
instance = Timeout.timeout(defined?(JRUBY_VERSION) ? 3 : 1) { described_class.new(pattern, *args) }
proc { instance }
rescue Timeout::Error => error
proc { raise Timeout::Error, "could not compile #{pattern.inspect} in time", error.backtrace }
rescue Exception => error
proc { raise error }
end
end
end
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