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105 lines
3.4 KiB
Python
105 lines
3.4 KiB
Python
from __future__ import unicode_literals
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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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depth = 1
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model = ForeignKeySource
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class FlatForeignKeySourceSerializer(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 = FlatForeignKeySourceSerializer()
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class Meta:
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model = ForeignKeyTarget
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# Nullable ForeignKey
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class NullableForeignKeySource(models.Model):
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name = models.CharField(max_length=100)
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target = models.ForeignKey(ForeignKeyTarget, null=True, blank=True,
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related_name='nullable_sources')
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class NullableForeignKeySourceSerializer(serializers.ModelSerializer):
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class Meta:
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depth = 1
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model = NullableForeignKeySource
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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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def test_foreign_key_retrieve(self):
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queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': {'id': 1, 'name': 'target-1'}},
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{'id': 2, 'name': 'source-2', 'target': {'id': 1, 'name': 'target-1'}},
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{'id': 3, 'name': 'source-3', 'target': {'id': 1, 'name': 'target-1'}},
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]
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self.assertEquals(serializer.data, expected)
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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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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [
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{'id': 1, 'name': 'source-1', 'target': 1},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': 1},
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]},
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{'id': 2, 'name': 'target-2', 'sources': [
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]}
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]
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self.assertEquals(serializer.data, expected)
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class NestedNullableForeignKeyTests(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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for idx in range(1, 4):
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if idx == 3:
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target = None
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source = NullableForeignKeySource(name='source-%d' % idx, target=target)
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source.save()
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def test_foreign_key_retrieve_with_null(self):
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queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': {'id': 1, 'name': 'target-1'}},
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{'id': 2, 'name': 'source-2', 'target': {'id': 1, 'name': 'target-1'}},
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{'id': 3, 'name': 'source-3', 'target': None},
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]
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self.assertEquals(serializer.data, expected)
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