1 files changed, 42 insertions, 0 deletions
diff --git a/_test/test_none.py b/_test/test_none.py
new file mode 100644
index 0000000..fa81c10
--- /dev/null
+++ b/_test/test_none.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+import pytest  # NOQA
+
+from .roundtrip import round_trip_dump, round_trip_load
+
+
+class TestNone:
+    def test_dump00(self):
+        data = None
+        s = round_trip_dump(data)
+        assert s == 'null\n...\n'
+        d = round_trip_load(s)
+        assert d == data
+
+    def test_dump01(self):
+        data = None
+        s = round_trip_dump(data, explicit_end=True)
+        assert s == 'null\n...\n'
+        d = round_trip_load(s)
+        assert d == data
+
+    def test_dump02(self):
+        data = None
+        s = round_trip_dump(data, explicit_end=False)
+        assert s == 'null\n...\n'
+        d = round_trip_load(s)
+        assert d == data
+
+    def test_dump03(self):
+        data = None
+        s = round_trip_dump(data, explicit_start=True)
+        assert s == '---\n...\n'
+        d = round_trip_load(s)
+        assert d == data
+
+    def test_dump04(self):
+        data = None
+        s = round_trip_dump(data, explicit_start=True, explicit_end=False)
+        assert s == '---\n...\n'
+        d = round_trip_load(s)
+        assert d == data