fix or remove tests (language syntax changing)

lib/parser/call_site.rb

@@ -1,17 +0,0 @@
-module Parser
-  module CallSite
-    include output
-
-    rule(:argument_list) {
-      left_parenthesis >>
-      (  ((operator_expression|value_expression).as(:argument) >> space? >>
-          (comma >> space? >> (operator_expression|value_expression).as(:argument)).repeat(0)).repeat(0,1)).as(:argument_list) >>
-          space? >> right_parenthesis
-    }
-
-    rule(:call_site) { ((module_name|instance_variable|basic_type).as(:receiver) >> str(".")).maybe >> #possibly qualified
-                          name.as(:call_site) >> argument_list >> comment.maybe}
-
-    
-  end
-end

lib/parser/expression.citrus

@@ -2,12 +2,17 @@ grammar Expression
   include Keywords
 
   rule more_args
-    list:(comma basic_expression )*
+    list:(comma basic_expression )1* {
+      capture(:basic_expression).value
+    }
   end
 
   rule argument_list
     (left_parenthesis basic_expression? more_args? right_parenthesis){
-        [ capture(:basic_expression).value ]
+        args = [ ]
+        args << capture(:basic_expression).value if capture(:basic_expression)
+        args << capture(:more_args).value if capture(:more_args)
+        args
         }
   end