160 lines
3 KiB
Ruby
160 lines
3 KiB
Ruby
module Mutant
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# Runner that allows to mutate an entire project
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class Runner
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include Immutable
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extend MethodObject
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# Return killers with errors
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#
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# @return [Enumerable<Killer>]
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#
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# @api private
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#
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attr_reader :errors
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# Test for failure
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#
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# @return [true]
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# returns true when there are left mutations
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#
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# @return [false]
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# returns false othewise
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#
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# @api private
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#
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def fail?
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!errors.empty?
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end
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private
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# Return reporter
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#
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# @return [Reporter]
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#
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# @api private
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#
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attr_reader :reporter
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private :reporter
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# Initialize runner object
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#
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# @param [Hash] options
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#
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# @return [undefined]
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#
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# @api private
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#
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def initialize(options)
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@killer = options.fetch(:killer) do
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raise ArgumentError, 'Missing :killer in options'
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end
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@pattern = options.fetch(:pattern) do
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raise ArgumentError, 'Missing :pattern in options'
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end
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@reporter = options.fetch(:reporter, Reporter::Null)
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@errors = []
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run
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end
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# Run mutation killers on subjects
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#
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# @return [undefined]
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#
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# @api private
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#
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def run
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@subjects = subjects.each do |subject|
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reporter.subject(subject)
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run_subject(subject)
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end
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end
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# Run mutation killers on subject
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#
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# @param [Subject] subject
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#
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# @return [undefined]
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#
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# @api private
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#
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def run_subject(subject)
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subject.each do |mutation|
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reporter.mutation(mutation)
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kill(mutation)
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end
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subject.reset
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end
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# Run killer on mutation
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#
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# @param [Mutation] mutation
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#
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# @return [undefined]
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#
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# @api private
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#
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def kill(mutation)
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killer = @killer.run(mutation)
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reporter.killer(killer)
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if killer.fail?
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@errors << killer
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end
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end
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# Return candiate matcher enumerator
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#
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# @return [Enumerable<Class<Matcher>>]
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#
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# @api private
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#
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def candidate_matchers
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[Matcher::Method::Singleton, Matcher::Method::Instance].each
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end
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# Return candidats enumerator
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#
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# @return [Enumerable<Object>]
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#
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# @api private
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#
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def candidates
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return to_enum(__method__) unless block_given?
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ObjectSpace.each_object(Module) do |candidate|
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yield candidate if @pattern =~ candidate.name
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end
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end
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# Return matcher enumerator
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#
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# @return [Enumerable<Matcher>]
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#
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# @api private
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#
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def matchers(&block)
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return to_enum(__method__) unless block_given?
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candidate_matchers.each do |candidate_matcher|
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candidates.each do |candidate|
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candidate_matcher.each(candidate,&block)
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end
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end
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end
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# Return subjects enumerator
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#
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# @return [Enumerable<Subject>]
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#
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# @api private
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#
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def subjects(&block)
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return to_enum(__method__) unless block_given?
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matchers.each do |matcher|
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matcher.each(&block)
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end
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end
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end
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end
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