Add test for previous fix (issue 50) to test_c_lexer.py
diff --git a/tests/test_c_lexer.py b/tests/test_c_lexer.py
index 3851569..773e608 100644
--- a/tests/test_c_lexer.py
+++ b/tests/test_c_lexer.py
@@ -219,7 +219,7 @@
         dsf

         # 9 

         armo

-        #line 10 "..\..\test.h"

+        #line 10 "..\~..\test.h"

         tok1

         #line 99999 "include/me.h"

         tok2

@@ -251,7 +251,7 @@
         self.assertEqual(t4.type, 'ID')

         self.assertEqual(t4.value, 'tok1')

         self.assertEqual(t4.lineno, 10)

-        self.assertEqual(self.clex.filename, r'..\..\test.h')

+        self.assertEqual(self.clex.filename, r'..\~..\test.h')

         

         t5 = self.clex.token()

         self.assertEqual(t5.type, 'ID')