Check macro conditionals

Author: kornilova203

tests/samples/Define.h

@@ -8,3 +8,13 @@
 
 extern int a;
 #define MY_A a // unsupported
+
+#ifdef NOT_DEFINED
+#define SHOULD_NOT_BE_DEFINED 0
+#endif
+
+#if INT == 0
+#define SHOULD_NOT_BE_DEFINED 1
+#else
+#define SHOULD_BE_DEFINED 2
+#endif

tests/samples/Define.scala

@@ -7,4 +7,5 @@ object DefineDefines {
   val STRING: native.CString = c"Hello, World!"
   val INT = 42
   val FLOAT = 5.6
+  val SHOULD_BE_DEFINED = 2
 }