moe the last (function) tests to new test model

test/parser/test_function_definition.rb

@@ -0,0 +1,36 @@
+require_relative "helper"
+
+class TestFunctionDefinition < MiniTest::Test
+  # include the magic (setup and parse -> test method translation), see there
+  include ParserHelper
+  
+  def test_simplest_function
+    @string_input    = <<HERE
+def foo(x) 
+  5
+end
+HERE
+    @parse_output = {:function_definition   => {:name => 'foo'},
+                :parmeter_list => [{:parmeter => {:name => 'x'}}],
+                :expressions   => [{:integer => '5'}]}
+    @transform_output = Parser::FunctionExpression.new('foo', 
+                [Parser::NameExpression.new('x')], 
+                [Parser::IntegerExpression.new(5)])
+  end
+
+  def test_function_assignment
+    @string_input    = <<HERE
+def foo(x) 
+ abba = 5 
+end
+HERE
+    @parse_output = { :function_definition => { :name => "foo" } , 
+                  :parmeter_list => [{ :parmeter => { :name => "x" } }], 
+                  :expressions => [ { :asignee => { :name => "abba" }, :asigned => { :integer => "5" } } ]
+                }
+    @transform_output = Parser::FunctionExpression.new( "foo", [Parser::NameExpression.new("x")],
+                           [Parser::AssignmentExpression.new( "abba", Parser::IntegerExpression.new(5) ) ])
+  end
+
+    
+end