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101 lines
3.8 KiB
Python
101 lines
3.8 KiB
Python
from copy import deepcopy
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from django.db import models
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from django.test import TestCase
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from rest_framework import serializers
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# ForeignKey
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class ForeignKeyTarget(models.Model):
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name = models.CharField(max_length=100)
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class ForeignKeySource(models.Model):
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name = models.CharField(max_length=100)
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target = models.ForeignKey(ForeignKeyTarget, related_name='sources')
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class ForeignKeySourceSerializer(serializers.ModelSerializer):
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class Meta:
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model = ForeignKeySource
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class ForeignKeyTargetSerializer(serializers.ModelSerializer):
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sources = ForeignKeySourceSerializer()
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class Meta:
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model = ForeignKeyTarget
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class ReverseForeignKeyTests(TestCase):
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def setUp(self):
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target = ForeignKeyTarget(name='target-1')
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target.save()
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new_target = ForeignKeyTarget(name='target-2')
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new_target.save()
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for idx in range(1, 4):
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source = ForeignKeySource(name='source-%d' % idx, target=target)
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source.save()
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self.target_data = {'id': 1, 'name': u'target-1', 'sources': [
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{'id': 1, 'name': u'source-1', 'target': 1},
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{'id': 2, 'name': u'source-2', 'target': 1},
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{'id': 3, 'name': u'source-3', 'target': 1},
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]}
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self.new_target_data = {'id': 2, 'name': u'target-2', 'sources': []}
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self.data = [self.target_data, self.new_target_data]
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def test_reverse_foreign_key_retrieve(self):
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset)
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self.assertEquals(serializer.data, self.data)
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def test_reverse_foreign_key_create(self):
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data = deepcopy(self.new_target_data)
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data['sources'].append({'name': u'source-4', 'target': 2})
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instance = ForeignKeyTarget.objects.get(pk=2)
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serializer = ForeignKeyTargetSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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self.assertEquals(serializer.data, data)
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serializer.save()
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# Ensure target 2 has new source and everything else is as expected
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset)
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expected = deepcopy(self.data)
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expected[1]['sources'].append({'id': 4, 'name': 'source-4', 'target': 2})
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self.assertEquals(serializer.data, expected)
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def test_reverse_foreign_key_update(self):
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data = deepcopy(self.target_data)
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data['sources'][0]['name'] = 'source-1-changed'
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data['sources'][2]['name'] = 'source-3-changed'
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instance = ForeignKeyTarget.objects.get(pk=1)
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serializer = ForeignKeyTargetSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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self.assertEquals(serializer.data, data)
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serializer.save()
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# Ensure target 1 is updated, and everything else is as expected
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset)
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expected = deepcopy(self.data)
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expected[0]['sources'][0]['name'] = 'source-1-changed'
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expected[0]['sources'][2]['name'] = 'source-3-changed'
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self.assertEquals(serializer.data, expected)
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def test_reverse_foreign_key_delete(self):
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data = deepcopy(self.target_data)
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del data['sources'][2]
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instance = ForeignKeyTarget.objects.get(pk=1)
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serializer = ForeignKeyTargetSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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self.assertEquals(serializer.data, data)
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serializer.save()
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# Ensure target 1 has 2 sources and everything else is as expected
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset)
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expected = deepcopy(self.data)
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del expected[0]['sources'][2]
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self.assertEquals(serializer.data, expected)
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