From c735b8c41802b9df631d0187272102f2e71bd7f1 Mon Sep 17 00:00:00 2001
From: Pierre Chiquet <pierre.chiquet@ubikey.fr>
Date: Wed, 18 Nov 2020 11:05:19 +0100
Subject: [PATCH] Add failing test when rendering to json a schema with
 timedelta

---
 tests/schemas/test_openapi.py | 17 ++++++++++++++++-
 tests/schemas/views.py        |  2 ++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/tests/schemas/test_openapi.py b/tests/schemas/test_openapi.py
index 542c377b1..0be3ac0c6 100644
--- a/tests/schemas/test_openapi.py
+++ b/tests/schemas/test_openapi.py
@@ -11,7 +11,8 @@ from rest_framework.authtoken.views import obtain_auth_token
 from rest_framework.compat import uritemplate
 from rest_framework.parsers import JSONParser, MultiPartParser
 from rest_framework.renderers import (
-    BaseRenderer, BrowsableAPIRenderer, JSONRenderer, OpenAPIRenderer
+    BaseRenderer, BrowsableAPIRenderer, JSONRenderer, OpenAPIRenderer,
+    JSONOpenAPIRenderer
 )
 from rest_framework.request import Request
 from rest_framework.schemas.openapi import AutoSchema, SchemaGenerator
@@ -992,6 +993,20 @@ class TestGenerator(TestCase):
         assert 'openapi' in schema
         assert 'paths' in schema
 
+    def test_schema_rendering_to_json(self):
+        patterns = [
+            path('example/', views.ExampleGenericAPIView.as_view()),
+        ]
+        generator = SchemaGenerator(patterns=patterns)
+
+        request = create_request('/')
+        schema = generator.get_schema(request=request)
+        ret = JSONOpenAPIRenderer().render(schema)
+
+        expected_start = b'{\n  "openapi": '
+        assert expected_start == ret[:len(expected_start)]
+        assert b'"default": "0.0"' in ret
+
     def test_schema_with_no_paths(self):
         patterns = []
         generator = SchemaGenerator(patterns=patterns)
diff --git a/tests/schemas/views.py b/tests/schemas/views.py
index 18b3beae4..f1ed0bd4e 100644
--- a/tests/schemas/views.py
+++ b/tests/schemas/views.py
@@ -1,4 +1,5 @@
 import uuid
+from datetime import timedelta
 
 from django.core.validators import (
     DecimalValidator, MaxLengthValidator, MaxValueValidator,
@@ -59,6 +60,7 @@ class DocStringExampleDetailView(APIView):
 class ExampleSerializer(serializers.Serializer):
     date = serializers.DateField()
     datetime = serializers.DateTimeField()
+    duration = serializers.DurationField(default=timedelta())
     hstore = serializers.HStoreField()
     uuid_field = serializers.UUIDField(default=uuid.uuid4)