From: Eric Haszlakiewicz <erh+git@nimenees.com>
Date: Sat, 23 Nov 2019 03:56:33 +0000 (-0500)
Subject: Extend test_double_serializer to check NaN and Infinity handling.
X-Git-Tag: json-c-0.14-20200419~81
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b1ad7488421e2305790a38aee4a695bc4d0394e0;p=json-c

Extend test_double_serializer to check NaN and Infinity handling.
---

diff --git a/tests/test_double_serializer.c b/tests/test_double_serializer.c
index 5752bc3..2cec24f 100644
--- a/tests/test_double_serializer.c
+++ b/tests/test_double_serializer.c
@@ -8,6 +8,9 @@
 #include "json_object.h"
 #include "json_object_private.h"
 
+/* Avoid compiler warnings about diving by constant zero */
+double zero_dot_zero = 0.0;
+
 int main()
 {
 	struct json_object *obj = json_object_new_double(0.5);
@@ -80,4 +83,15 @@ int main()
 	printf("obj(-12.0).to_string(default format)=%s\n", json_object_to_json_string(obj));
 	json_object_put(obj);
 
+	/* Test NaN handling */
+	obj = json_object_new_double(zero_dot_zero / zero_dot_zero);
+	printf("obj(0.0/0.0)=%s\n", json_object_to_json_string(obj));
+
+	/* Test Infinity and -Infinity handling */
+	obj = json_object_new_double(1.0/zero_dot_zero);
+	printf("obj(1.0/0.0)=%s\n", json_object_to_json_string(obj));
+
+	obj = json_object_new_double(-1.0/zero_dot_zero);
+	printf("obj(-1.0/0.0)=%s\n", json_object_to_json_string(obj));
+
 }
diff --git a/tests/test_double_serializer.expected b/tests/test_double_serializer.expected
index d3aef72..221d832 100644
--- a/tests/test_double_serializer.expected
+++ b/tests/test_double_serializer.expected
@@ -17,3 +17,6 @@ obj(12.0).to_string(%.0f)=12
 obj(12.0).to_string(%.0g)=1e+01
 obj(12.0).to_string(%.1g)=12.0
 obj(-12.0).to_string(default format)=-12.0
+obj(0.0/0.0)=NaN
+obj(1.0/0.0)=Infinity
+obj(-1.0/0.0)=-Infinity