diff --git a/data/roundtrip/roundtrip28.json b/data/roundtrip/roundtrip28.json
new file mode 100644
index 00000000..49923179
--- /dev/null
+++ b/data/roundtrip/roundtrip28.json
@@ -0,0 +1 @@
+[NaN]
\ No newline at end of file
diff --git a/data/roundtrip/roundtrip29.json b/data/roundtrip/roundtrip29.json
new file mode 100644
index 00000000..8c2baf78
--- /dev/null
+++ b/data/roundtrip/roundtrip29.json
@@ -0,0 +1 @@
+[Infinity]
\ No newline at end of file
diff --git a/data/roundtrip/roundtrip30.json b/data/roundtrip/roundtrip30.json
new file mode 100644
index 00000000..7602aa15
--- /dev/null
+++ b/data/roundtrip/roundtrip30.json
@@ -0,0 +1 @@
+[NaN,Infinity,-Infinity]
\ No newline at end of file
diff --git a/test/test_roundtrip.py b/test/test_roundtrip.py
index ac308877..78a57cf3 100644
--- a/test/test_roundtrip.py
+++ b/test/test_roundtrip.py
@@ -172,3 +172,21 @@ def test_roundtrip027(self):
         roundtrip027.json
         """
         self._run_roundtrip_json("roundtrip27.json")
+
+    def test_roundtrip028(self):
+        """
+        roundtrip028.json
+        """
+        self._run_roundtrip_json("roundtrip28.json")
+
+    def test_roundtrip029(self):
+        """
+        roundtrip029.json
+        """
+        self._run_roundtrip_json("roundtrip29.json")
+
+    def test_roundtrip030(self):
+        """
+        roundtrip030.json
+        """
+        self._run_roundtrip_json("roundtrip30.json")