Disallow NaN or Inf real values

test/suites/api/test_number.c

@@ -5,6 +5,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include <math.h>
 #include <jansson.h>
 #include "util.h"
 
@@ -39,4 +40,34 @@ static void run_tests()
 
     json_decref(integer);
     json_decref(real);
+
+#ifdef NAN
+    real = json_real(NAN);
+    if(real != NULL)
+        fail("could construct a real from NaN");
+
+    real = json_real(1.0);
+    if(json_real_set(real, NAN) != -1)
+        fail("could set a real to NaN");
+
+    if(json_real_value(real) != 1.0)
+        fail("real value changed unexpectedly");
+
+    json_decref(real);
+#endif
+
+#ifdef INFINITY
+    real = json_real(INFINITY);
+    if(real != NULL)
+        fail("could construct a real from Inf");
+
+    real = json_real(1.0);
+    if(json_real_set(real, INFINITY) != -1)
+        fail("could set a real to Inf");
+
+    if(json_real_value(real) != 1.0)
+        fail("real value changed unexpectedly");
+
+    json_decref(real);
+#endif
 }