remove function test from here and use setup

function definition is a statement, goes there

test/compiler/expressions/test_call.rb

@@ -6,48 +6,38 @@ module Virtual
 
     def setup
       Virtual.machine.boot
+      @root = :call_site
+      @output = Register::RegisterValue
     end
 
     def test_call_main_plain
-      @root = :call_site
       @string_input    = 'main()'
-      @output = Register::RegisterValue
       check
     end
 
     def test_call_main_int
-      @root = :call_site
       @string_input    =  'main(1)'
-      @output = Register::RegisterValue
       check
     end
 
-    def ttest_call_self_main
-      @root = :call_site
+    def test_call_self_main
       @string_input    =  'self.main()'
-      @output = Register::RegisterValue
       check
     end
 
     def test_call_main_string
-      @root = :call_site
       @string_input    = 'main("1")'
-      @output = Register::RegisterValue
       check
     end
 
     def test_call_main_op
       Virtual.machine.space.get_main.ensure_local(:bar , :Integer)
-      @root = :call_site
       @string_input    = 'main( bar )'
-      @output = Register::RegisterValue
       check
     end
 
     def test_call_string_put
-      @root = :call_site
       @string_input    = '"Hello Raisa, I am salama".putstring()'
-      @output = Register::RegisterValue
       check
     end