902 lines
34 KiB
Python
902 lines
34 KiB
Python
"""
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The `ModelSerializer` and `HyperlinkedModelSerializer` classes are essentially
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shortcuts for automatically creating serializers based on a given model class.
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These tests deal with ensuring that we correctly map the model fields onto
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an appropriate set of serializer fields for each case.
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"""
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from __future__ import unicode_literals
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import decimal
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from collections import OrderedDict
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import django
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import pytest
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from django.core.exceptions import ImproperlyConfigured
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from django.core.validators import (
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MaxValueValidator, MinLengthValidator, MinValueValidator
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)
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from django.db import models
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from django.test import TestCase
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from django.utils import six
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from rest_framework import serializers
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from rest_framework.compat import DurationField as ModelDurationField
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from rest_framework.compat import DecimalValidator, unicode_repr
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def dedent(blocktext):
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return '\n'.join([line[12:] for line in blocktext.splitlines()[1:-1]])
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# Tests for regular field mappings.
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# ---------------------------------
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class CustomField(models.Field):
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"""
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A custom model field simply for testing purposes.
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"""
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pass
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class OneFieldModel(models.Model):
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char_field = models.CharField(max_length=100)
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class RegularFieldsModel(models.Model):
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"""
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A model class for testing regular flat fields.
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"""
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auto_field = models.AutoField(primary_key=True)
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big_integer_field = models.BigIntegerField()
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boolean_field = models.BooleanField(default=False)
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char_field = models.CharField(max_length=100)
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comma_separated_integer_field = models.CommaSeparatedIntegerField(max_length=100)
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date_field = models.DateField()
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datetime_field = models.DateTimeField()
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decimal_field = models.DecimalField(max_digits=3, decimal_places=1)
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email_field = models.EmailField(max_length=100)
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float_field = models.FloatField()
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integer_field = models.IntegerField()
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null_boolean_field = models.NullBooleanField()
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positive_integer_field = models.PositiveIntegerField()
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positive_small_integer_field = models.PositiveSmallIntegerField()
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slug_field = models.SlugField(max_length=100)
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small_integer_field = models.SmallIntegerField()
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text_field = models.TextField(max_length=100)
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time_field = models.TimeField()
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url_field = models.URLField(max_length=100)
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custom_field = CustomField()
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file_path_field = models.FilePathField(path='/tmp/')
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def method(self):
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return 'method'
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COLOR_CHOICES = (('red', 'Red'), ('blue', 'Blue'), ('green', 'Green'))
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DECIMAL_CHOICES = (('low', decimal.Decimal('0.1')), ('medium', decimal.Decimal('0.5')), ('high', decimal.Decimal('0.9')))
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class FieldOptionsModel(models.Model):
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value_limit_field = models.IntegerField(validators=[MinValueValidator(1), MaxValueValidator(10)])
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length_limit_field = models.CharField(validators=[MinLengthValidator(3)], max_length=12)
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blank_field = models.CharField(blank=True, max_length=10)
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null_field = models.IntegerField(null=True)
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default_field = models.IntegerField(default=0)
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descriptive_field = models.IntegerField(help_text='Some help text', verbose_name='A label')
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choices_field = models.CharField(max_length=100, choices=COLOR_CHOICES)
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class ChoicesModel(models.Model):
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choices_field_with_nonstandard_args = models.DecimalField(max_digits=3, decimal_places=1, choices=DECIMAL_CHOICES, verbose_name='A label')
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class TestModelSerializer(TestCase):
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def test_create_method(self):
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class TestSerializer(serializers.ModelSerializer):
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non_model_field = serializers.CharField()
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class Meta:
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model = OneFieldModel
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fields = ('char_field', 'non_model_field')
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serializer = TestSerializer(data={
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'char_field': 'foo',
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'non_model_field': 'bar',
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})
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serializer.is_valid()
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with self.assertRaises(TypeError) as excinfo:
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serializer.save()
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msginitial = 'Got a `TypeError` when calling `OneFieldModel.objects.create()`.'
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assert str(excinfo.exception).startswith(msginitial)
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def test_abstract_model(self):
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"""
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Test that trying to use ModelSerializer with Abstract Models
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throws a ValueError exception.
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"""
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class AbstractModel(models.Model):
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afield = models.CharField(max_length=255)
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class Meta:
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abstract = True
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = AbstractModel
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fields = ('afield',)
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serializer = TestSerializer(data={
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'afield': 'foo',
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})
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with self.assertRaises(ValueError) as excinfo:
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serializer.is_valid()
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msginitial = 'Cannot use ModelSerializer with Abstract Models.'
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assert str(excinfo.exception).startswith(msginitial)
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class TestRegularFieldMappings(TestCase):
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def test_regular_fields(self):
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"""
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Model fields should map to their equivelent serializer fields.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=True)
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big_integer_field = IntegerField()
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boolean_field = BooleanField(required=False)
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char_field = CharField(max_length=100)
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comma_separated_integer_field = CharField(max_length=100, validators=[<django.core.validators.RegexValidator object>])
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date_field = DateField()
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datetime_field = DateTimeField()
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decimal_field = DecimalField(decimal_places=1, max_digits=3)
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email_field = EmailField(max_length=100)
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float_field = FloatField()
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integer_field = IntegerField()
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null_boolean_field = NullBooleanField(required=False)
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positive_integer_field = IntegerField()
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positive_small_integer_field = IntegerField()
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slug_field = SlugField(max_length=100)
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small_integer_field = IntegerField()
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text_field = CharField(max_length=100, style={'base_template': 'textarea.html'})
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time_field = TimeField()
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url_field = URLField(max_length=100)
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custom_field = ModelField(model_field=<tests.test_model_serializer.CustomField: custom_field>)
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file_path_field = FilePathField(path='/tmp/')
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""")
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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def test_field_options(self):
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = FieldOptionsModel
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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value_limit_field = IntegerField(max_value=10, min_value=1)
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length_limit_field = CharField(max_length=12, min_length=3)
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blank_field = CharField(allow_blank=True, max_length=10, required=False)
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null_field = IntegerField(allow_null=True, required=False)
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default_field = IntegerField(required=False)
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descriptive_field = IntegerField(help_text='Some help text', label='A label')
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choices_field = ChoiceField(choices=(('red', 'Red'), ('blue', 'Blue'), ('green', 'Green')))
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""")
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if six.PY2:
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# This particular case is too awkward to resolve fully across
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# both py2 and py3.
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expected = expected.replace(
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"('red', 'Red'), ('blue', 'Blue'), ('green', 'Green')",
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"(u'red', u'Red'), (u'blue', u'Blue'), (u'green', u'Green')"
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)
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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def test_method_field(self):
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"""
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Properties and methods on the model should be allowed as `Meta.fields`
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values, and should map to `ReadOnlyField`.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'method')
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=True)
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method = ReadOnlyField()
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_pk_fields(self):
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"""
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Both `pk` and the actual primary key name are valid in `Meta.fields`.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('pk', 'auto_field')
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expected = dedent("""
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TestSerializer():
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pk = IntegerField(label='Auto field', read_only=True)
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auto_field = IntegerField(read_only=True)
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_extra_field_kwargs(self):
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"""
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Ensure `extra_kwargs` are passed to generated fields.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'char_field')
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extra_kwargs = {'char_field': {'default': 'extra'}}
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=True)
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char_field = CharField(default='extra', max_length=100)
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_extra_field_kwargs_required(self):
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"""
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Ensure `extra_kwargs` are passed to generated fields.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'char_field')
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extra_kwargs = {'auto_field': {'required': False, 'read_only': False}}
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=False, required=False)
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char_field = CharField(max_length=100)
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_invalid_field(self):
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"""
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Field names that do not map to a model field or relationship should
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raise a configuration errror.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'invalid')
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with self.assertRaises(ImproperlyConfigured) as excinfo:
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TestSerializer().fields
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expected = 'Field name `invalid` is not valid for model `RegularFieldsModel`.'
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assert str(excinfo.exception) == expected
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def test_missing_field(self):
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"""
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Fields that have been declared on the serializer class must be included
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in the `Meta.fields` if it exists.
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"""
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class TestSerializer(serializers.ModelSerializer):
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missing = serializers.ReadOnlyField()
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field',)
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with self.assertRaises(AssertionError) as excinfo:
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TestSerializer().fields
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expected = (
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"The field 'missing' was declared on serializer TestSerializer, "
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"but has not been included in the 'fields' option."
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)
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assert str(excinfo.exception) == expected
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def test_missing_superclass_field(self):
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"""
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Fields that have been declared on a parent of the serializer class may
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be excluded from the `Meta.fields` option.
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"""
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class TestSerializer(serializers.ModelSerializer):
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missing = serializers.ReadOnlyField()
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class Meta:
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model = RegularFieldsModel
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class ChildSerializer(TestSerializer):
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missing = serializers.ReadOnlyField()
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field',)
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ChildSerializer().fields
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def test_choices_with_nonstandard_args(self):
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class ExampleSerializer(serializers.ModelSerializer):
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class Meta:
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model = ChoicesModel
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ExampleSerializer()
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def test_fields_and_exclude_behavior(self):
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class ImplicitFieldsSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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class ExplicitFieldsSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = '__all__'
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implicit = ImplicitFieldsSerializer()
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explicit = ExplicitFieldsSerializer()
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assert implicit.data == explicit.data
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@pytest.mark.skipif(django.VERSION < (1, 8),
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reason='DurationField is only available for django1.8+')
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class TestDurationFieldMapping(TestCase):
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def test_duration_field(self):
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class DurationFieldModel(models.Model):
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"""
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A model that defines DurationField.
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"""
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duration_field = ModelDurationField()
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = DurationFieldModel
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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duration_field = DurationField()
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""")
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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class TestGenericIPAddressFieldValidation(TestCase):
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def test_ip_address_validation(self):
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class IPAddressFieldModel(models.Model):
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address = models.GenericIPAddressField()
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = IPAddressFieldModel
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s = TestSerializer(data={'address': 'not an ip address'})
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self.assertFalse(s.is_valid())
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self.assertEquals(1, len(s.errors['address']),
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'Unexpected number of validation errors: '
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'{0}'.format(s.errors))
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# Tests for relational field mappings.
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# ------------------------------------
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class ForeignKeyTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class ManyToManyTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class OneToOneTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class ThroughTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class Supplementary(models.Model):
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extra = models.IntegerField()
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forwards = models.ForeignKey('ThroughTargetModel')
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backwards = models.ForeignKey('RelationalModel')
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class RelationalModel(models.Model):
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foreign_key = models.ForeignKey(ForeignKeyTargetModel, related_name='reverse_foreign_key')
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many_to_many = models.ManyToManyField(ManyToManyTargetModel, related_name='reverse_many_to_many')
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one_to_one = models.OneToOneField(OneToOneTargetModel, related_name='reverse_one_to_one')
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through = models.ManyToManyField(ThroughTargetModel, through=Supplementary, related_name='reverse_through')
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class UniqueTogetherModel(models.Model):
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foreign_key = models.ForeignKey(ForeignKeyTargetModel, related_name='unique_foreign_key')
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one_to_one = models.OneToOneField(OneToOneTargetModel, related_name='unique_one_to_one')
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class Meta:
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unique_together = ("foreign_key", "one_to_one")
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class TestRelationalFieldMappings(TestCase):
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def test_pk_relations(self):
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RelationalModel
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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foreign_key = PrimaryKeyRelatedField(queryset=ForeignKeyTargetModel.objects.all())
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one_to_one = PrimaryKeyRelatedField(queryset=OneToOneTargetModel.objects.all(), validators=[<UniqueValidator(queryset=RelationalModel.objects.all())>])
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many_to_many = PrimaryKeyRelatedField(allow_empty=False, many=True, queryset=ManyToManyTargetModel.objects.all())
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through = PrimaryKeyRelatedField(many=True, read_only=True)
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""")
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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def test_nested_relations(self):
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RelationalModel
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depth = 1
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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foreign_key = NestedSerializer(read_only=True):
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id = IntegerField(label='ID', read_only=True)
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name = CharField(max_length=100)
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one_to_one = NestedSerializer(read_only=True):
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id = IntegerField(label='ID', read_only=True)
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name = CharField(max_length=100)
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many_to_many = NestedSerializer(many=True, read_only=True):
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id = IntegerField(label='ID', read_only=True)
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name = CharField(max_length=100)
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through = NestedSerializer(many=True, read_only=True):
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id = IntegerField(label='ID', read_only=True)
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name = CharField(max_length=100)
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""")
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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def test_hyperlinked_relations(self):
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class TestSerializer(serializers.HyperlinkedModelSerializer):
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class Meta:
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model = RelationalModel
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expected = dedent("""
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TestSerializer():
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url = HyperlinkedIdentityField(view_name='relationalmodel-detail')
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foreign_key = HyperlinkedRelatedField(queryset=ForeignKeyTargetModel.objects.all(), view_name='foreignkeytargetmodel-detail')
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one_to_one = HyperlinkedRelatedField(queryset=OneToOneTargetModel.objects.all(), validators=[<UniqueValidator(queryset=RelationalModel.objects.all())>], view_name='onetoonetargetmodel-detail')
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many_to_many = HyperlinkedRelatedField(allow_empty=False, many=True, queryset=ManyToManyTargetModel.objects.all(), view_name='manytomanytargetmodel-detail')
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through = HyperlinkedRelatedField(many=True, read_only=True, view_name='throughtargetmodel-detail')
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""")
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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def test_nested_hyperlinked_relations(self):
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class TestSerializer(serializers.HyperlinkedModelSerializer):
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class Meta:
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model = RelationalModel
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depth = 1
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expected = dedent("""
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TestSerializer():
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url = HyperlinkedIdentityField(view_name='relationalmodel-detail')
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foreign_key = NestedSerializer(read_only=True):
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url = HyperlinkedIdentityField(view_name='foreignkeytargetmodel-detail')
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name = CharField(max_length=100)
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one_to_one = NestedSerializer(read_only=True):
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url = HyperlinkedIdentityField(view_name='onetoonetargetmodel-detail')
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name = CharField(max_length=100)
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many_to_many = NestedSerializer(many=True, read_only=True):
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url = HyperlinkedIdentityField(view_name='manytomanytargetmodel-detail')
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name = CharField(max_length=100)
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through = NestedSerializer(many=True, read_only=True):
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url = HyperlinkedIdentityField(view_name='throughtargetmodel-detail')
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name = CharField(max_length=100)
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""")
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self.assertEqual(unicode_repr(TestSerializer()), expected)
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def test_nested_unique_together_relations(self):
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class TestSerializer(serializers.HyperlinkedModelSerializer):
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class Meta:
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model = UniqueTogetherModel
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depth = 1
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expected = dedent("""
|
|
TestSerializer():
|
|
url = HyperlinkedIdentityField(view_name='uniquetogethermodel-detail')
|
|
foreign_key = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='foreignkeytargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
one_to_one = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='onetoonetargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
class Meta:
|
|
validators = [<UniqueTogetherValidator(queryset=UniqueTogetherModel.objects.all(), fields=('foreign_key', 'one_to_one'))>]
|
|
""")
|
|
if six.PY2:
|
|
# This case is also too awkward to resolve fully across both py2
|
|
# and py3. (See above)
|
|
expected = expected.replace(
|
|
"('foreign_key', 'one_to_one')",
|
|
"(u'foreign_key', u'one_to_one')"
|
|
)
|
|
self.assertEqual(unicode_repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_foreign_key(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ForeignKeyTargetModel
|
|
fields = ('id', 'name', 'reverse_foreign_key')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_foreign_key = PrimaryKeyRelatedField(many=True, queryset=RelationalModel.objects.all())
|
|
""")
|
|
self.assertEqual(unicode_repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_one_to_one(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = OneToOneTargetModel
|
|
fields = ('id', 'name', 'reverse_one_to_one')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_one_to_one = PrimaryKeyRelatedField(queryset=RelationalModel.objects.all())
|
|
""")
|
|
self.assertEqual(unicode_repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_many_to_many(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ManyToManyTargetModel
|
|
fields = ('id', 'name', 'reverse_many_to_many')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_many_to_many = PrimaryKeyRelatedField(many=True, queryset=RelationalModel.objects.all())
|
|
""")
|
|
self.assertEqual(unicode_repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_through(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ThroughTargetModel
|
|
fields = ('id', 'name', 'reverse_through')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_through = PrimaryKeyRelatedField(many=True, read_only=True)
|
|
""")
|
|
self.assertEqual(unicode_repr(TestSerializer()), expected)
|
|
|
|
|
|
class DisplayValueTargetModel(models.Model):
|
|
name = models.CharField(max_length=100)
|
|
|
|
def __str__(self):
|
|
return '%s Color' % (self.name)
|
|
|
|
|
|
class DisplayValueModel(models.Model):
|
|
color = models.ForeignKey(DisplayValueTargetModel)
|
|
|
|
|
|
class TestRelationalFieldDisplayValue(TestCase):
|
|
def setUp(self):
|
|
DisplayValueTargetModel.objects.bulk_create([
|
|
DisplayValueTargetModel(name='Red'),
|
|
DisplayValueTargetModel(name='Yellow'),
|
|
DisplayValueTargetModel(name='Green'),
|
|
])
|
|
|
|
def test_default_display_value(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DisplayValueModel
|
|
|
|
serializer = TestSerializer()
|
|
expected = OrderedDict([('1', 'Red Color'), ('2', 'Yellow Color'), ('3', 'Green Color')])
|
|
self.assertEqual(serializer.fields['color'].choices, expected)
|
|
|
|
def test_custom_display_value(self):
|
|
class TestField(serializers.PrimaryKeyRelatedField):
|
|
def display_value(self, instance):
|
|
return 'My %s Color' % (instance.name)
|
|
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
color = TestField(queryset=DisplayValueTargetModel.objects.all())
|
|
|
|
class Meta:
|
|
model = DisplayValueModel
|
|
|
|
serializer = TestSerializer()
|
|
expected = OrderedDict([('1', 'My Red Color'), ('2', 'My Yellow Color'), ('3', 'My Green Color')])
|
|
self.assertEqual(serializer.fields['color'].choices, expected)
|
|
|
|
|
|
class TestIntegration(TestCase):
|
|
def setUp(self):
|
|
self.foreign_key_target = ForeignKeyTargetModel.objects.create(
|
|
name='foreign_key'
|
|
)
|
|
self.one_to_one_target = OneToOneTargetModel.objects.create(
|
|
name='one_to_one'
|
|
)
|
|
self.many_to_many_targets = [
|
|
ManyToManyTargetModel.objects.create(
|
|
name='many_to_many (%d)' % idx
|
|
) for idx in range(3)
|
|
]
|
|
self.instance = RelationalModel.objects.create(
|
|
foreign_key=self.foreign_key_target,
|
|
one_to_one=self.one_to_one_target,
|
|
)
|
|
self.instance.many_to_many = self.many_to_many_targets
|
|
self.instance.save()
|
|
|
|
def test_pk_retrival(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
|
|
serializer = TestSerializer(self.instance)
|
|
expected = {
|
|
'id': self.instance.pk,
|
|
'foreign_key': self.foreign_key_target.pk,
|
|
'one_to_one': self.one_to_one_target.pk,
|
|
'many_to_many': [item.pk for item in self.many_to_many_targets],
|
|
'through': []
|
|
}
|
|
self.assertEqual(serializer.data, expected)
|
|
|
|
def test_pk_create(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
|
|
new_foreign_key = ForeignKeyTargetModel.objects.create(
|
|
name='foreign_key'
|
|
)
|
|
new_one_to_one = OneToOneTargetModel.objects.create(
|
|
name='one_to_one'
|
|
)
|
|
new_many_to_many = [
|
|
ManyToManyTargetModel.objects.create(
|
|
name='new many_to_many (%d)' % idx
|
|
) for idx in range(3)
|
|
]
|
|
data = {
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
}
|
|
|
|
# Serializer should validate okay.
|
|
serializer = TestSerializer(data=data)
|
|
assert serializer.is_valid()
|
|
|
|
# Creating the instance, relationship attributes should be set.
|
|
instance = serializer.save()
|
|
assert instance.foreign_key.pk == new_foreign_key.pk
|
|
assert instance.one_to_one.pk == new_one_to_one.pk
|
|
assert [
|
|
item.pk for item in instance.many_to_many.all()
|
|
] == [
|
|
item.pk for item in new_many_to_many
|
|
]
|
|
assert list(instance.through.all()) == []
|
|
|
|
# Representation should be correct.
|
|
expected = {
|
|
'id': instance.pk,
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
'through': []
|
|
}
|
|
self.assertEqual(serializer.data, expected)
|
|
|
|
def test_pk_update(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
|
|
new_foreign_key = ForeignKeyTargetModel.objects.create(
|
|
name='foreign_key'
|
|
)
|
|
new_one_to_one = OneToOneTargetModel.objects.create(
|
|
name='one_to_one'
|
|
)
|
|
new_many_to_many = [
|
|
ManyToManyTargetModel.objects.create(
|
|
name='new many_to_many (%d)' % idx
|
|
) for idx in range(3)
|
|
]
|
|
data = {
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
}
|
|
|
|
# Serializer should validate okay.
|
|
serializer = TestSerializer(self.instance, data=data)
|
|
assert serializer.is_valid()
|
|
|
|
# Creating the instance, relationship attributes should be set.
|
|
instance = serializer.save()
|
|
assert instance.foreign_key.pk == new_foreign_key.pk
|
|
assert instance.one_to_one.pk == new_one_to_one.pk
|
|
assert [
|
|
item.pk for item in instance.many_to_many.all()
|
|
] == [
|
|
item.pk for item in new_many_to_many
|
|
]
|
|
assert list(instance.through.all()) == []
|
|
|
|
# Representation should be correct.
|
|
expected = {
|
|
'id': self.instance.pk,
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
'through': []
|
|
}
|
|
self.assertEqual(serializer.data, expected)
|
|
|
|
|
|
# Tests for bulk create using `ListSerializer`.
|
|
|
|
class BulkCreateModel(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
|
|
class TestBulkCreate(TestCase):
|
|
def test_bulk_create(self):
|
|
class BasicModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = BulkCreateModel
|
|
fields = ('name',)
|
|
|
|
class BulkCreateSerializer(serializers.ListSerializer):
|
|
child = BasicModelSerializer()
|
|
|
|
data = [{'name': 'a'}, {'name': 'b'}, {'name': 'c'}]
|
|
serializer = BulkCreateSerializer(data=data)
|
|
assert serializer.is_valid()
|
|
|
|
# Objects are returned by save().
|
|
instances = serializer.save()
|
|
assert len(instances) == 3
|
|
assert [item.name for item in instances] == ['a', 'b', 'c']
|
|
|
|
# Objects have been created in the database.
|
|
assert BulkCreateModel.objects.count() == 3
|
|
assert list(BulkCreateModel.objects.values_list('name', flat=True)) == ['a', 'b', 'c']
|
|
|
|
# Serializer returns correct data.
|
|
assert serializer.data == data
|
|
|
|
|
|
class TestMetaClassModel(models.Model):
|
|
text = models.CharField(max_length=100)
|
|
|
|
|
|
class TestSerializerMetaClass(TestCase):
|
|
def test_meta_class_fields_option(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = TestMetaClassModel
|
|
fields = 'text'
|
|
|
|
with self.assertRaises(TypeError) as result:
|
|
ExampleSerializer().fields
|
|
|
|
exception = result.exception
|
|
assert str(exception).startswith(
|
|
"The `fields` option must be a list or tuple"
|
|
)
|
|
|
|
def test_meta_class_exclude_option(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = TestMetaClassModel
|
|
exclude = 'text'
|
|
|
|
with self.assertRaises(TypeError) as result:
|
|
ExampleSerializer().fields
|
|
|
|
exception = result.exception
|
|
assert str(exception).startswith(
|
|
"The `exclude` option must be a list or tuple"
|
|
)
|
|
|
|
def test_meta_class_fields_and_exclude_options(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = TestMetaClassModel
|
|
fields = ('text',)
|
|
exclude = ('text',)
|
|
|
|
with self.assertRaises(AssertionError) as result:
|
|
ExampleSerializer().fields
|
|
|
|
exception = result.exception
|
|
self.assertEqual(
|
|
str(exception),
|
|
"Cannot set both 'fields' and 'exclude' options on serializer ExampleSerializer."
|
|
)
|
|
|
|
|
|
class Issue2704TestCase(TestCase):
|
|
def test_queryset_all(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
additional_attr = serializers.CharField()
|
|
|
|
class Meta:
|
|
model = OneFieldModel
|
|
fields = ('char_field', 'additional_attr')
|
|
|
|
OneFieldModel.objects.create(char_field='abc')
|
|
qs = OneFieldModel.objects.all()
|
|
|
|
for o in qs:
|
|
o.additional_attr = '123'
|
|
|
|
serializer = TestSerializer(instance=qs, many=True)
|
|
|
|
expected = [{
|
|
'char_field': 'abc',
|
|
'additional_attr': '123',
|
|
}]
|
|
|
|
assert serializer.data == expected
|
|
|
|
|
|
class DecimalFieldModel(models.Model):
|
|
decimal_field = models.DecimalField(
|
|
max_digits=3,
|
|
decimal_places=1,
|
|
validators=[MinValueValidator(1), MaxValueValidator(3)]
|
|
)
|
|
|
|
|
|
class TestDecimalFieldMappings(TestCase):
|
|
@pytest.mark.skipif(DecimalValidator is not None,
|
|
reason='DecimalValidator is available in Django 1.9+')
|
|
def test_decimal_field_has_no_decimal_validator(self):
|
|
"""
|
|
Test that a DecimalField has no validators before Django 1.9.
|
|
"""
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DecimalFieldModel
|
|
|
|
serializer = TestSerializer()
|
|
|
|
assert len(serializer.fields['decimal_field'].validators) == 0
|
|
|
|
@pytest.mark.skipif(DecimalValidator is None,
|
|
reason='DecimalValidator is available in Django 1.9+')
|
|
def test_decimal_field_has_decimal_validator(self):
|
|
"""
|
|
Test that a DecimalField has DecimalValidator in Django 1.9+.
|
|
"""
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DecimalFieldModel
|
|
|
|
serializer = TestSerializer()
|
|
|
|
assert len(serializer.fields['decimal_field'].validators) == 2
|