From b4900ebd6a65aec8bdbcc54a23651d43066e165d Mon Sep 17 00:00:00 2001
From: Cristi Vijdea <cristi@cvjd.me>
Date: Sat, 2 Mar 2019 05:35:10 +0200
Subject: [PATCH] Add tests for #310

---
 testproj/articles/models.py      |  1 +
 testproj/articles/serializers.py |  6 +++---
 testproj/snippets/serializers.py |  1 +
 tests/reference.yaml             | 11 +++++++++++
 4 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/testproj/articles/models.py b/testproj/articles/models.py
index bf1d4c9..c13522a 100644
--- a/testproj/articles/models.py
+++ b/testproj/articles/models.py
@@ -20,6 +20,7 @@ class Article(models.Model):
                               on_delete=models.PROTECT)
     original_group = models.ForeignKey('ArticleGroup', related_name='articles_as_original', blank=True, default=None,
                                        on_delete=models.PROTECT)
+    read_only_nullable = models.CharField(max_length=20, null=True, blank=True)
 
 
 class ArticleGroup(models.Model):
diff --git a/testproj/articles/serializers.py b/testproj/articles/serializers.py
index 6867e16..bc29f6a 100644
--- a/testproj/articles/serializers.py
+++ b/testproj/articles/serializers.py
@@ -17,10 +17,9 @@ class ArticleSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Article
-        fields = ('title', 'author', 'body', 'slug', 'date_created', 'date_modified',
+        fields = ('title', 'author', 'body', 'slug', 'date_created', 'date_modified', 'read_only_nullable',
                   'references', 'uuid', 'cover', 'cover_name', 'article_type', 'group', 'original_group', )
-        read_only_fields = ('date_created', 'date_modified',
-                            'references', 'uuid', 'cover_name')
+        read_only_fields = ('date_created', 'date_modified', 'references', 'uuid', 'cover_name', 'read_only_nullable')
         lookup_field = 'slug'
         extra_kwargs = {
             'body': {'help_text': 'body serializer help_text'},
@@ -29,6 +28,7 @@ class ArticleSerializer(serializers.ModelSerializer):
                 'help_text': _("The ID of the user that created this article; if none is provided, "
                                "defaults to the currently logged in user.")
             },
+            'read_only_nullable': {'allow_null': True},
         }
 
 
diff --git a/testproj/snippets/serializers.py b/testproj/snippets/serializers.py
index 156bf70..03d18c8 100644
--- a/testproj/snippets/serializers.py
+++ b/testproj/snippets/serializers.py
@@ -10,6 +10,7 @@ from snippets.models import LANGUAGE_CHOICES, STYLE_CHOICES, Snippet
 class LanguageSerializer(serializers.Serializer):
     name = serializers.ChoiceField(
         choices=LANGUAGE_CHOICES, default='python', help_text='The name of the programming language')
+    read_only_nullable = serializers.CharField(read_only=True, allow_null=True)
 
     class Meta:
         ref_name = None
diff --git a/tests/reference.yaml b/tests/reference.yaml
index 46c31d1..fd6832b 100644
--- a/tests/reference.yaml
+++ b/tests/reference.yaml
@@ -902,6 +902,11 @@ definitions:
         type: string
         format: date-time
         readOnly: true
+      read_only_nullable:
+        type: string
+        readOnly: true
+        minLength: 1
+        x-nullable: true
       references:
         description: this is a really bad example
         type: object
@@ -1515,6 +1520,12 @@ definitions:
               - yaml+jinja
               - zephir
             default: python
+          readOnlyNullable:
+            title: Read only nullable
+            type: string
+            readOnly: true
+            minLength: 1
+            x-nullable: true
       styles:
         type: array
         items: