fix if to_vool

and add (simple) hoisting tests

test/ruby/test_if_statement2.rb

@@ -0,0 +1,48 @@
+require_relative 'helper'
+
+module Ruby
+  class TestIfStatementVool < MiniTest::Test
+    include RubyTests
+
+    def setup
+        @lst = compile("if(true) ; a = 1 ; else ; a = 2 ; end").to_vool
+    end
+    def test_class
+      assert_equal Vool::IfStatement , @lst.class
+    end
+    def test_true
+      assert_equal Vool::LocalAssignment , @lst.if_true.class
+    end
+    def test_false
+      assert_equal Vool::LocalAssignment , @lst.if_false.class
+    end
+    def test_condition
+      assert_equal Vool::TrueConstant , @lst.condition.class
+    end
+  end
+  class TestIfStatementVoolHoisted < MiniTest::Test
+    include RubyTests
+
+    def setup
+        @lst = compile("if(a == 1) ; a = 1  end").to_vool
+    end
+
+    def test_class
+      assert_equal Vool::Statements , @lst.class
+    end
+    def test_first_class
+      assert_equal Vool::LocalAssignment , @lst.first.class
+    end
+    def test_last_class
+      assert_equal Vool::IfStatement , @lst.last.class
+    end
+    def test_true
+      assert_equal Vool::LocalAssignment , @lst.last.if_true.class
+    end
+    def test_condition
+      assert_equal Vool::LocalVariable , @lst.last.condition.class
+      assert_equal @lst.first.name , @lst.last.condition.name
+    end
+  end
+
+end