Add test cases for reference/const-reference of integers

Author: sethrj

Examples/test-suite/integers.i

@@ -17,6 +17,41 @@
   signed long long signed_long_long_identity(signed long long x) { return x; }
   unsigned long long unsigned_long_long_identity(unsigned long long x) { return x; }
 
+#ifdef __cplusplus
+  signed char        & signed_char_ref_identity(       signed char        & x) { return x; }
+  unsigned char      & unsigned_char_ref_identity(     unsigned char      & x) { return x; }
+  signed short       & signed_short_ref_identity(      signed short       & x) { return x; }
+  unsigned short     & unsigned_short_ref_identity(    unsigned short     & x) { return x; }
+  signed int         & signed_int_ref_identity(        signed int         & x) { return x; }
+  unsigned int       & unsigned_int_ref_identity(      unsigned int       & x) { return x; }
+  signed long        & signed_long_ref_identity(       signed long        & x) { return x; }
+  unsigned long      & unsigned_long_ref_identity(     unsigned long      & x) { return x; }
+  signed long long   & signed_long_long_ref_identity(  signed long long   & x) { return x; }
+  unsigned long long & unsigned_long_long_ref_identity(unsigned long long & x) { return x; }
+
+  const signed char        & const_signed_char_ref_identity(       const signed char        & x) { return x; }
+  const unsigned char      & const_unsigned_char_ref_identity(     const unsigned char      & x) { return x; }
+  const signed short       & const_signed_short_ref_identity(      const signed short       & x) { return x; }
+  const unsigned short     & const_unsigned_short_ref_identity(    const unsigned short     & x) { return x; }
+  const signed int         & const_signed_int_ref_identity(        const signed int         & x) { return x; }
+  const unsigned int       & const_unsigned_int_ref_identity(      const unsigned int       & x) { return x; }
+  const signed long        & const_signed_long_ref_identity(       const signed long        & x) { return x; }
+  const unsigned long      & const_unsigned_long_ref_identity(     const unsigned long      & x) { return x; }
+  const signed long long   & const_signed_long_long_ref_identity(  const signed long long   & x) { return x; }
+  const unsigned long long & const_unsigned_long_long_ref_identity(const unsigned long long & x) { return x; }
+#endif
+
+  signed char        * signed_char_ptr() { return NULL; }
+  unsigned char      * unsigned_char_ptr() { return NULL; }
+  signed short       * signed_short_ptr() { return NULL; }
+  unsigned short     * unsigned_short_ptr() { return NULL; }
+  signed int         * signed_int_ptr() { return NULL; }
+  unsigned int       * unsigned_int_ptr() { return NULL; }
+  signed long        * signed_long_ptr() { return NULL; }
+  unsigned long      * unsigned_long_ptr() { return NULL; }
+  signed long long   * signed_long_long_ptr() { return NULL; }
+  unsigned long long * unsigned_long_long_ptr() { return NULL; }
+
   size_t signed_char_size() { return sizeof (signed char); }
   size_t unsigned_char_size() { return sizeof (unsigned char); }
   size_t signed_short_size() { return sizeof (signed short); }