From 9833afa7958a9200b0ce55d2872f731fd6c5f312 Mon Sep 17 00:00:00 2001
From: Nicolas Delaby <nicolas@noa.one>
Date: Thu, 15 Sep 2016 10:34:29 +0200
Subject: [PATCH] Add a test to show a regression with RegexField

 and compiled regex
---
 tests/test_fields.py     | 15 +++++++++++++++
 tests/test_serializer.py | 14 ++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/tests/test_fields.py b/tests/test_fields.py
index f1a588c27f..4a4b741c53 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -1,5 +1,6 @@
 import datetime
 import os
+import re
 import uuid
 from decimal import Decimal
 
@@ -590,6 +591,20 @@ class TestRegexField(FieldValues):
     field = serializers.RegexField(regex='[a-z][0-9]')
 
 
+class TestiCompiledRegexField(FieldValues):
+    """
+    Valid and invalid values for `RegexField`.
+    """
+    valid_inputs = {
+        'a9': 'a9',
+    }
+    invalid_inputs = {
+        'A9': ["This value does not match the required pattern."]
+    }
+    outputs = {}
+    field = serializers.RegexField(regex=re.compile('[a-z][0-9]'))
+
+
 class TestSlugField(FieldValues):
     """
     Valid and invalid values for `SlugField`.
diff --git a/tests/test_serializer.py b/tests/test_serializer.py
index 4e9080909f..bd9ef95002 100644
--- a/tests/test_serializer.py
+++ b/tests/test_serializer.py
@@ -2,6 +2,7 @@
 from __future__ import unicode_literals
 
 import pickle
+import re
 
 import pytest
 
@@ -337,3 +338,16 @@ def test_default_should_not_be_included_on_partial_update(self):
         assert serializer.is_valid()
         assert serializer.validated_data == {'integer': 456}
         assert serializer.errors == {}
+
+
+class TestSerializerValidationWithCompiledRegexField:
+    def setup(self):
+        class ExampleSerializer(serializers.Serializer):
+            name = serializers.RegexField(re.compile(r'\d'), required=True)
+        self.Serializer = ExampleSerializer
+
+    def test_validation_success(self):
+        serializer = self.Serializer(data={'name': '2'})
+        assert serializer.is_valid()
+        assert serializer.validated_data == {'name': '2'}
+        assert serializer.errors == {}