fix and test vool return statement

test/vool/test_compiler.rb

@@ -6,5 +6,6 @@ require_relative "test_hash_statement"
 require_relative "test_if_statement"
 require_relative "test_method_statement"
 require_relative "test_send_statement"
+require_relative "test_return_statement"
 require_relative "test_variables"
 require_relative "test_while_statement"

test/vool/test_return_statement.rb

@@ -0,0 +1,23 @@
+require_relative "helper"
+
+module Vool
+  class TestReturnStatement < MiniTest::Test
+
+    def test_return_const
+      lst = Compiler.compile( "return 1" )
+      assert_equal ReturnStatement , lst.class
+    end
+
+    def test_return_value
+      lst = Compiler.compile( "return 1" )
+      assert_equal 1 , lst.return_value.value
+    end
+
+    def test_return_send
+      lst = Compiler.compile( "return foo" )
+      assert_equal SendStatement , lst.return_value.class
+      assert_equal :foo , lst.return_value.name
+    end
+
+  end
+end