free_mutant/lib/mutant/runner.rb
2013-01-15 23:46:05 +01:00

145 lines
2.4 KiB
Ruby

module Mutant
# Runner that allows to mutate an entire project
class Runner
include Adamantium::Flat
extend MethodObject
# Test for failure
#
# @return [true]
# returns true when there are left mutations
#
# @return [false]
# returns false othewise
#
# @api private
#
def fail?
reporter.errors?
end
# Return config
#
# @return [Mutant::Config]
#
# @api private
#
attr_reader :config
private
# Initialize object
#
# @param [Config] config
#
# @return [undefined]
#
# @api private
#
def initialize(config)
@config = config
run
end
# Return strategy
#
# @return [Strategy]
#
# @api private
#
def strategy
config.strategy
end
# Return reporter
#
# @return [Reporter]
#
# @api private
#
def reporter
config.reporter
end
# Run mutation killers on subjects
#
# @return [undefined]
#
# @api private
#
def run
reporter.print_config
util = strategy
util.setup
config.matcher.each do |subject|
reporter.subject(subject)
run_subject(subject)
end
util.teardown
end
# Run mutation killers on subject
#
# @param [Subject] subject
#
# @return [undefined]
#
# @api private
#
def run_subject(subject)
return unless test_noop(subject)
subject.each do |mutation|
next unless config.filter.match?(mutation)
reporter.mutation(mutation)
kill(mutation)
end
end
# Test noop mutation
#
# @return [true]
# if noop mutation is alive
#
# @return [false]
# otherwise
#
# @api private
#
def test_noop(subject)
noop = subject.noop
unless kill(noop)
reporter.noop(noop)
return false
end
true
end
# Run killer on mutation
#
# @param [Mutation] mutation
#
# @return [true]
# if killer was successful
#
# @return [false]
# otherwise
#
# @api private
#
def kill(mutation)
killer = killer(mutation)
reporter.report_killer(killer)
killer.success?
end
# Return killer for mutation
#
# @return [Killer]
#
# @api private
#
def killer(mutation)
strategy.kill(mutation)
end
end
end