clearer organization for compiler tests

was slightly messy with small/large
now needed different test for expression and statements

test/compiler/expressions/test_call.rb

@@ -0,0 +1,55 @@
+require_relative "compiler_helper"
+
+module Virtual
+  class TestCall < MiniTest::Test
+    include CompilerHelper
+
+    def setup
+      Virtual.machine.boot
+    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
+      @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
+
+  end
+end