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test_relations_nested.py
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from __future__ import unicode_literals
from django.db import models
from django.test import TestCase
from rest_framework import serializers
from .models import OneToOneTarget
class OneToOneSource(models.Model):
name = models.CharField(max_length=100)
target = models.OneToOneField(OneToOneTarget, related_name='source',
null=True, blank=True)
class OneToManyTarget(models.Model):
name = models.CharField(max_length=100)
class OneToManySource(models.Model):
name = models.CharField(max_length=100)
target = models.ForeignKey(OneToManyTarget, related_name='sources')
class ReverseNestedOneToOneTests(TestCase):
def setUp(self):
class OneToOneSourceSerializer(serializers.ModelSerializer):
class Meta:
model = OneToOneSource
fields = ('id', 'name')
class OneToOneTargetSerializer(serializers.ModelSerializer):
source = OneToOneSourceSerializer()
class Meta:
model = OneToOneTarget
fields = ('id', 'name', 'source')
self.Serializer = OneToOneTargetSerializer
for idx in range(1, 4):
target = OneToOneTarget(name='target-%d' % idx)
target.save()
source = OneToOneSource(name='source-%d' % idx, target=target)
source.save()
def test_one_to_one_retrieve(self):
queryset = OneToOneTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1', 'source': {'id': 1, 'name': 'source-1'}},
{'id': 2, 'name': 'target-2', 'source': {'id': 2, 'name': 'source-2'}},
{'id': 3, 'name': 'target-3', 'source': {'id': 3, 'name': 'source-3'}}
]
self.assertEqual(serializer.data, expected)
def test_one_to_one_create(self):
data = {'id': 4, 'name': 'target-4', 'source': {'id': 4, 'name': 'source-4'}}
serializer = self.Serializer(data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'target-4')
# Ensure (target 4, target_source 4, source 4) are added, and
# everything else is as expected.
queryset = OneToOneTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1', 'source': {'id': 1, 'name': 'source-1'}},
{'id': 2, 'name': 'target-2', 'source': {'id': 2, 'name': 'source-2'}},
{'id': 3, 'name': 'target-3', 'source': {'id': 3, 'name': 'source-3'}},
{'id': 4, 'name': 'target-4', 'source': {'id': 4, 'name': 'source-4'}}
]
self.assertEqual(serializer.data, expected)
def test_one_to_one_create_with_invalid_data(self):
data = {'id': 4, 'name': 'target-4', 'source': {'id': 4}}
serializer = self.Serializer(data=data)
self.assertFalse(serializer.is_valid())
self.assertEqual(serializer.errors, {'source': [{'name': ['This field is required.']}]})
def test_one_to_one_update(self):
data = {'id': 3, 'name': 'target-3-updated', 'source': {'id': 3, 'name': 'source-3-updated'}}
instance = OneToOneTarget.objects.get(pk=3)
serializer = self.Serializer(instance, data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'target-3-updated')
# Ensure (target 3, target_source 3, source 3) are updated,
# and everything else is as expected.
queryset = OneToOneTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1', 'source': {'id': 1, 'name': 'source-1'}},
{'id': 2, 'name': 'target-2', 'source': {'id': 2, 'name': 'source-2'}},
{'id': 3, 'name': 'target-3-updated', 'source': {'id': 3, 'name': 'source-3-updated'}}
]
self.assertEqual(serializer.data, expected)
class ForwardNestedOneToOneTests(TestCase):
def setUp(self):
class OneToOneTargetSerializer(serializers.ModelSerializer):
class Meta:
model = OneToOneTarget
fields = ('id', 'name')
class OneToOneSourceSerializer(serializers.ModelSerializer):
target = OneToOneTargetSerializer()
class Meta:
model = OneToOneSource
fields = ('id', 'name', 'target')
self.Serializer = OneToOneSourceSerializer
for idx in range(1, 4):
target = OneToOneTarget(name='target-%d' % idx)
target.save()
source = OneToOneSource(name='source-%d' % idx, target=target)
source.save()
def test_one_to_one_retrieve(self):
queryset = OneToOneSource.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'source-1', 'target': {'id': 1, 'name': 'target-1'}},
{'id': 2, 'name': 'source-2', 'target': {'id': 2, 'name': 'target-2'}},
{'id': 3, 'name': 'source-3', 'target': {'id': 3, 'name': 'target-3'}}
]
self.assertEqual(serializer.data, expected)
def test_one_to_one_create(self):
data = {'id': 4, 'name': 'source-4', 'target': {'id': 4, 'name': 'target-4'}}
serializer = self.Serializer(data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'source-4')
# Ensure (target 4, target_source 4, source 4) are added, and
# everything else is as expected.
queryset = OneToOneSource.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'source-1', 'target': {'id': 1, 'name': 'target-1'}},
{'id': 2, 'name': 'source-2', 'target': {'id': 2, 'name': 'target-2'}},
{'id': 3, 'name': 'source-3', 'target': {'id': 3, 'name': 'target-3'}},
{'id': 4, 'name': 'source-4', 'target': {'id': 4, 'name': 'target-4'}}
]
self.assertEqual(serializer.data, expected)
def test_one_to_one_create_with_invalid_data(self):
data = {'id': 4, 'name': 'source-4', 'target': {'id': 4}}
serializer = self.Serializer(data=data)
self.assertFalse(serializer.is_valid())
self.assertEqual(serializer.errors, {'target': [{'name': ['This field is required.']}]})
def test_one_to_one_update(self):
data = {'id': 3, 'name': 'source-3-updated', 'target': {'id': 3, 'name': 'target-3-updated'}}
instance = OneToOneSource.objects.get(pk=3)
serializer = self.Serializer(instance, data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'source-3-updated')
# Ensure (target 3, target_source 3, source 3) are updated,
# and everything else is as expected.
queryset = OneToOneSource.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'source-1', 'target': {'id': 1, 'name': 'target-1'}},
{'id': 2, 'name': 'source-2', 'target': {'id': 2, 'name': 'target-2'}},
{'id': 3, 'name': 'source-3-updated', 'target': {'id': 3, 'name': 'target-3-updated'}}
]
self.assertEqual(serializer.data, expected)
def test_one_to_one_update_to_null(self):
data = {'id': 3, 'name': 'source-3-updated', 'target': None}
instance = OneToOneSource.objects.get(pk=3)
serializer = self.Serializer(instance, data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'source-3-updated')
self.assertEqual(obj.target, None)
queryset = OneToOneSource.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'source-1', 'target': {'id': 1, 'name': 'target-1'}},
{'id': 2, 'name': 'source-2', 'target': {'id': 2, 'name': 'target-2'}},
{'id': 3, 'name': 'source-3-updated', 'target': None}
]
self.assertEqual(serializer.data, expected)
# TODO: Nullable 1-1 tests
# def test_one_to_one_delete(self):
# data = {'id': 3, 'name': 'target-3', 'target_source': None}
# instance = OneToOneTarget.objects.get(pk=3)
# serializer = self.Serializer(instance, data=data)
# self.assertTrue(serializer.is_valid())
# serializer.save()
# # Ensure (target_source 3, source 3) are deleted,
# # and everything else is as expected.
# queryset = OneToOneTarget.objects.all()
# serializer = self.Serializer(queryset)
# expected = [
# {'id': 1, 'name': 'target-1', 'source': {'id': 1, 'name': 'source-1'}},
# {'id': 2, 'name': 'target-2', 'source': {'id': 2, 'name': 'source-2'}},
# {'id': 3, 'name': 'target-3', 'source': None}
# ]
# self.assertEqual(serializer.data, expected)
class ReverseNestedOneToManyTests(TestCase):
def setUp(self):
class OneToManySourceSerializer(serializers.ModelSerializer):
class Meta:
model = OneToManySource
fields = ('id', 'name')
class OneToManyTargetSerializer(serializers.ModelSerializer):
sources = OneToManySourceSerializer(many=True, allow_add_remove=True)
class Meta:
model = OneToManyTarget
fields = ('id', 'name', 'sources')
self.Serializer = OneToManyTargetSerializer
target = OneToManyTarget(name='target-1')
target.save()
for idx in range(1, 4):
source = OneToManySource(name='source-%d' % idx, target=target)
source.save()
def test_one_to_many_retrieve(self):
queryset = OneToManyTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1', 'sources': [{'id': 1, 'name': 'source-1'},
{'id': 2, 'name': 'source-2'},
{'id': 3, 'name': 'source-3'}]},
]
self.assertEqual(serializer.data, expected)
def test_one_to_many_create(self):
data = {'id': 1, 'name': 'target-1', 'sources': [{'id': 1, 'name': 'source-1'},
{'id': 2, 'name': 'source-2'},
{'id': 3, 'name': 'source-3'},
{'id': 4, 'name': 'source-4'}]}
instance = OneToManyTarget.objects.get(pk=1)
serializer = self.Serializer(instance, data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'target-1')
# Ensure source 4 is added, and everything else is as
# expected.
queryset = OneToManyTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1', 'sources': [{'id': 1, 'name': 'source-1'},
{'id': 2, 'name': 'source-2'},
{'id': 3, 'name': 'source-3'},
{'id': 4, 'name': 'source-4'}]}
]
self.assertEqual(serializer.data, expected)
def test_one_to_many_create_with_invalid_data(self):
data = {'id': 1, 'name': 'target-1', 'sources': [{'id': 1, 'name': 'source-1'},
{'id': 2, 'name': 'source-2'},
{'id': 3, 'name': 'source-3'},
{'id': 4}]}
serializer = self.Serializer(data=data)
self.assertFalse(serializer.is_valid())
self.assertEqual(serializer.errors, {'sources': [{}, {}, {}, {'name': ['This field is required.']}]})
def test_one_to_many_update(self):
data = {'id': 1, 'name': 'target-1-updated', 'sources': [{'id': 1, 'name': 'source-1-updated'},
{'id': 2, 'name': 'source-2'},
{'id': 3, 'name': 'source-3'}]}
instance = OneToManyTarget.objects.get(pk=1)
serializer = self.Serializer(instance, data=data)
self.assertTrue(serializer.is_valid())
obj = serializer.save()
self.assertEqual(serializer.data, data)
self.assertEqual(obj.name, 'target-1-updated')
# Ensure (target 1, source 1) are updated,
# and everything else is as expected.
queryset = OneToManyTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1-updated', 'sources': [{'id': 1, 'name': 'source-1-updated'},
{'id': 2, 'name': 'source-2'},
{'id': 3, 'name': 'source-3'}]}
]
self.assertEqual(serializer.data, expected)
def test_one_to_many_delete(self):
data = {'id': 1, 'name': 'target-1', 'sources': [{'id': 1, 'name': 'source-1'},
{'id': 3, 'name': 'source-3'}]}
instance = OneToManyTarget.objects.get(pk=1)
serializer = self.Serializer(instance, data=data)
self.assertTrue(serializer.is_valid())
serializer.save()
# Ensure source 2 is deleted, and everything else is as
# expected.
queryset = OneToManyTarget.objects.all()
serializer = self.Serializer(queryset, many=True)
expected = [
{'id': 1, 'name': 'target-1', 'sources': [{'id': 1, 'name': 'source-1'},
{'id': 3, 'name': 'source-3'}]}
]
self.assertEqual(serializer.data, expected)