generate mains test methods according to file name

test/mains/test_interpreted.rb

@@ -0,0 +1,28 @@
+require_relative 'helper'
+
+module Mains
+  class TestInterpreted < MiniTest::Test
+      include Risc::Ticker
+      def setup;end
+
+    # runnable_methods is called by minitest to determine which tests to run
+    def self.runnable_methods
+      all = Dir["test/mains/source/*.rb"]
+      tests =[]
+      all.each do |file_name|
+        fullname = file_name.split("/").last.split(".").first
+        name , stdout , exit_code = fullname.split("_")
+        method_name = "test_#{name}"
+        tests << method_name
+        input = File.read(file_name)
+        self.send(:define_method, method_name ) do
+          run_main(input)
+          assert_equal stdout , @interpreter.stdout , "Wrong stdout #{name}"
+          assert_equal exit_code , get_return.to_s , "Wrong exit code #{name}"
+        end
+      end
+      tests
+    end
+
+  end
+end