From 971578ca345c3d3bae7fd93b87c41d43483b6f05 Mon Sep 17 00:00:00 2001
From: Andreas Pelme
Date: Sun, 2 Mar 2014 12:40:30 +0100
Subject: Support for running the test suite with py.test

 * Get rid of runtests.py
 * Moved test code  from rest_framework/tests and rest_framework/runtests to tests
 * Invoke py.test from setup.py
 * Invoke py.test from Travis
 * Invoke py.test from tox
 * Changed setUpClass to be just plain setUp in test_permissions.py
 * Updated contribution guideline to show how to invoke py.test
---
 tests/test_validation.py | 104 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 tests/test_validation.py

(limited to 'tests/test_validation.py')

diff --git a/tests/test_validation.py b/tests/test_validation.py
new file mode 100644
index 00000000..124c874d
--- /dev/null
+++ b/tests/test_validation.py
@@ -0,0 +1,104 @@
+from __future__ import unicode_literals
+from django.db import models
+from django.test import TestCase
+from rest_framework import generics, serializers, status
+from rest_framework.test import APIRequestFactory
+
+factory = APIRequestFactory()
+
+
+# Regression for #666
+
+class ValidationModel(models.Model):
+    blank_validated_field = models.CharField(max_length=255)
+
+
+class ValidationModelSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ValidationModel
+        fields = ('blank_validated_field',)
+        read_only_fields = ('blank_validated_field',)
+
+
+class UpdateValidationModel(generics.RetrieveUpdateDestroyAPIView):
+    model = ValidationModel
+    serializer_class = ValidationModelSerializer
+
+
+class TestPreSaveValidationExclusions(TestCase):
+    def test_pre_save_validation_exclusions(self):
+        """
+        Somewhat weird test case to ensure that we don't perform model
+        validation on read only fields.
+        """
+        obj = ValidationModel.objects.create(blank_validated_field='')
+        request = factory.put('/', {}, format='json')
+        view = UpdateValidationModel().as_view()
+        response = view(request, pk=obj.pk).render()
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+
+# Regression for #653
+
+class ShouldValidateModel(models.Model):
+    should_validate_field = models.CharField(max_length=255)
+
+
+class ShouldValidateModelSerializer(serializers.ModelSerializer):
+    renamed = serializers.CharField(source='should_validate_field', required=False)
+
+    def validate_renamed(self, attrs, source):
+        value = attrs[source]
+        if len(value) < 3:
+            raise serializers.ValidationError('Minimum 3 characters.')
+        return attrs
+
+    class Meta:
+        model = ShouldValidateModel
+        fields = ('renamed',)
+
+
+class TestPreSaveValidationExclusionsSerializer(TestCase):
+    def test_renamed_fields_are_model_validated(self):
+        """
+        Ensure fields with 'source' applied do get still get model validation.
+        """
+        # We've set `required=False` on the serializer, but the model
+        # does not have `blank=True`, so this serializer should not validate.
+        serializer = ShouldValidateModelSerializer(data={'renamed': ''})
+        self.assertEqual(serializer.is_valid(), False)
+        self.assertIn('renamed', serializer.errors)
+        self.assertNotIn('should_validate_field', serializer.errors)
+
+
+class TestCustomValidationMethods(TestCase):
+    def test_custom_validation_method_is_executed(self):
+        serializer = ShouldValidateModelSerializer(data={'renamed': 'fo'})
+        self.assertFalse(serializer.is_valid())
+        self.assertIn('renamed', serializer.errors)
+
+    def test_custom_validation_method_passing(self):
+        serializer = ShouldValidateModelSerializer(data={'renamed': 'foo'})
+        self.assertTrue(serializer.is_valid())
+
+
+class ValidationSerializer(serializers.Serializer):
+    foo = serializers.CharField()
+
+    def validate_foo(self, attrs, source):
+        raise serializers.ValidationError("foo invalid")
+
+    def validate(self, attrs):
+        raise serializers.ValidationError("serializer invalid")
+
+
+class TestAvoidValidation(TestCase):
+    """
+    If serializer was initialized with invalid data (None or non dict-like), it
+    should avoid validation layer (validate_<field> and validate methods)
+    """
+    def test_serializer_errors_has_only_invalid_data_error(self):
+        serializer = ValidationSerializer(data='invalid data')
+        self.assertFalse(serializer.is_valid())
+        self.assertDictEqual(serializer.errors,
+                             {'non_field_errors': ['Invalid data']})
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