require_relative "setup" require "parslet/convenience" # remove the line numbers on assert fails, so it's easy to copy paste the result as the expected result Parslet::Slice.class_eval do def inspect '"' + to_s + '"' end end # Included in parser test will create tests methods module ParserHelper def self.included(base) base.send :include, InstanceMethods #provides helpers and setup base.send :extend, ClassMethods #gets the method creation going end module InstanceMethods def setup @parser = Parser::Salama.new @transform = Parser::Transform.new end # check that @string_input parses correctly to @parse_output def check_parse is = @parser.parse_with_debug(@string_input) assert_equal @parse_output , is end #check that @parse_output transforms to @transform_output def check_transform is = @transform.apply @parse_output #puts is.transform assert_equal @transform_output , is end # check that @string_input parses and transforms to @transform_output def check_ast syntax = @parser.parse(@string_input) is = @transform.apply(syntax) #puts is.inspect assert_equal @transform_output , is end end module ClassMethods # this creates test methods dynamically. For each test_* method we create # three test_*[ast/parse/transf] methods that in turn check the three phases. # runnable_methods is called by minitest to determine which tests to run def runnable_methods tests = [] public_instance_methods(true).grep(/^test_/).map(&:to_s).each do |test| ["ast" , "transform" , "parse"].each do |what| name = "#{test}_#{what}" tests << name self.send(:define_method, name ) do send(test) send("check_#{what}") end end end tests end end end