Merge branch 'master' into set-retry-after

Conflicts:
	tests/test_throttling.py

1 files changed, 0 insertions, 984 deletions

diff --git a/rest_framework/tests/test_fields.py b/rest_framework/tests/test_fields.py
deleted file mode 100644
index e127feef..00000000
--- a/rest_framework/tests/test_fields.py
+++ /dev/null
@@ -1,984 +0,0 @@
-"""
-General serializer field tests.
-"""
-from __future__ import unicode_literals
-
-import datetime
-from decimal import Decimal
-from uuid import uuid4
-from django.core import validators
-from django.db import models
-from django.test import TestCase
-from django.utils.datastructures import SortedDict
-from rest_framework import serializers
-from rest_framework.tests.models import RESTFrameworkModel
-
-
-class TimestampedModel(models.Model):
-    added = models.DateTimeField(auto_now_add=True)
-    updated = models.DateTimeField(auto_now=True)
-
-
-class CharPrimaryKeyModel(models.Model):
-    id = models.CharField(max_length=20, primary_key=True)
-
-
-class TimestampedModelSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = TimestampedModel
-
-
-class CharPrimaryKeyModelSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = CharPrimaryKeyModel
-
-
-class TimeFieldModel(models.Model):
-    clock = models.TimeField()
-
-
-class TimeFieldModelSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = TimeFieldModel
-
-
-SAMPLE_CHOICES = [
-    ('red', 'Red'),
-    ('green', 'Green'),
-    ('blue', 'Blue'),
-]
-
-
-class ChoiceFieldModel(models.Model):
-    choice = models.CharField(choices=SAMPLE_CHOICES, blank=True, max_length=255)
-
-
-class ChoiceFieldModelSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = ChoiceFieldModel
-
-
-class ChoiceFieldModelWithNull(models.Model):
-    choice = models.CharField(choices=SAMPLE_CHOICES, blank=True, null=True, max_length=255)
-
-
-class ChoiceFieldModelWithNullSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = ChoiceFieldModelWithNull
-
-
-class BasicFieldTests(TestCase):
-    def test_auto_now_fields_read_only(self):
-        """
-        auto_now and auto_now_add fields should be read_only by default.
-        """
-        serializer = TimestampedModelSerializer()
-        self.assertEqual(serializer.fields['added'].read_only, True)
-
-    def test_auto_pk_fields_read_only(self):
-        """
-        AutoField fields should be read_only by default.
-        """
-        serializer = TimestampedModelSerializer()
-        self.assertEqual(serializer.fields['id'].read_only, True)
-
-    def test_non_auto_pk_fields_not_read_only(self):
-        """
-        PK fields other than AutoField fields should not be read_only by default.
-        """
-        serializer = CharPrimaryKeyModelSerializer()
-        self.assertEqual(serializer.fields['id'].read_only, False)
-
-    def test_dict_field_ordering(self):
-        """
-        Field should preserve dictionary ordering, if it exists.
-        See: https://github.com/tomchristie/django-rest-framework/issues/832
-        """
-        ret = SortedDict()
-        ret['c'] = 1
-        ret['b'] = 1
-        ret['a'] = 1
-        ret['z'] = 1
-        field = serializers.Field()
-        keys = list(field.to_native(ret).keys())
-        self.assertEqual(keys, ['c', 'b', 'a', 'z'])
-
-
-class DateFieldTest(TestCase):
-    """
-    Tests for the DateFieldTest from_native() and to_native() behavior
-    """
-
-    def test_from_native_string(self):
-        """
-        Make sure from_native() accepts default iso input formats.
-        """
-        f = serializers.DateField()
-        result_1 = f.from_native('1984-07-31')
-
-        self.assertEqual(datetime.date(1984, 7, 31), result_1)
-
-    def test_from_native_datetime_date(self):
-        """
-        Make sure from_native() accepts a datetime.date instance.
-        """
-        f = serializers.DateField()
-        result_1 = f.from_native(datetime.date(1984, 7, 31))
-
-        self.assertEqual(result_1, datetime.date(1984, 7, 31))
-
-    def test_from_native_custom_format(self):
-        """
-        Make sure from_native() accepts custom input formats.
-        """
-        f = serializers.DateField(input_formats=['%Y -- %d'])
-        result = f.from_native('1984 -- 31')
-
-        self.assertEqual(datetime.date(1984, 1, 31), result)
-
-    def test_from_native_invalid_default_on_custom_format(self):
-        """
-        Make sure from_native() don't accept default formats if custom format is preset
-        """
-        f = serializers.DateField(input_formats=['%Y -- %d'])
-
-        try:
-            f.from_native('1984-07-31')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY -- DD"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_empty(self):
-        """
-        Make sure from_native() returns None on empty param.
-        """
-        f = serializers.DateField()
-        result = f.from_native('')
-
-        self.assertEqual(result, None)
-
-    def test_from_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.DateField()
-        result = f.from_native(None)
-
-        self.assertEqual(result, None)
-
-    def test_from_native_invalid_date(self):
-        """
-        Make sure from_native() raises a ValidationError on passing an invalid date.
-        """
-        f = serializers.DateField()
-
-        try:
-            f.from_native('1984-13-31')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY[-MM[-DD]]"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_invalid_format(self):
-        """
-        Make sure from_native() raises a ValidationError on passing an invalid format.
-        """
-        f = serializers.DateField()
-
-        try:
-            f.from_native('1984 -- 31')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY[-MM[-DD]]"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_to_native(self):
-        """
-        Make sure to_native() returns datetime as default.
-        """
-        f = serializers.DateField()
-
-        result_1 = f.to_native(datetime.date(1984, 7, 31))
-
-        self.assertEqual(datetime.date(1984, 7, 31), result_1)
-
-    def test_to_native_iso(self):
-        """
-        Make sure to_native() with 'iso-8601' returns iso formated date.
-        """
-        f = serializers.DateField(format='iso-8601')
-
-        result_1 = f.to_native(datetime.date(1984, 7, 31))
-
-        self.assertEqual('1984-07-31', result_1)
-
-    def test_to_native_custom_format(self):
-        """
-        Make sure to_native() returns correct custom format.
-        """
-        f = serializers.DateField(format="%Y - %m.%d")
-
-        result_1 = f.to_native(datetime.date(1984, 7, 31))
-
-        self.assertEqual('1984 - 07.31', result_1)
-
-    def test_to_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.DateField(required=False)
-        self.assertEqual(None, f.to_native(None))
-
-
-class DateTimeFieldTest(TestCase):
-    """
-    Tests for the DateTimeField from_native() and to_native() behavior
-    """
-
-    def test_from_native_string(self):
-        """
-        Make sure from_native() accepts default iso input formats.
-        """
-        f = serializers.DateTimeField()
-        result_1 = f.from_native('1984-07-31 04:31')
-        result_2 = f.from_native('1984-07-31 04:31:59')
-        result_3 = f.from_native('1984-07-31 04:31:59.000200')
-
-        self.assertEqual(datetime.datetime(1984, 7, 31, 4, 31), result_1)
-        self.assertEqual(datetime.datetime(1984, 7, 31, 4, 31, 59), result_2)
-        self.assertEqual(datetime.datetime(1984, 7, 31, 4, 31, 59, 200), result_3)
-
-    def test_from_native_datetime_datetime(self):
-        """
-        Make sure from_native() accepts a datetime.datetime instance.
-        """
-        f = serializers.DateTimeField()
-        result_1 = f.from_native(datetime.datetime(1984, 7, 31, 4, 31))
-        result_2 = f.from_native(datetime.datetime(1984, 7, 31, 4, 31, 59))
-        result_3 = f.from_native(datetime.datetime(1984, 7, 31, 4, 31, 59, 200))
-
-        self.assertEqual(result_1, datetime.datetime(1984, 7, 31, 4, 31))
-        self.assertEqual(result_2, datetime.datetime(1984, 7, 31, 4, 31, 59))
-        self.assertEqual(result_3, datetime.datetime(1984, 7, 31, 4, 31, 59, 200))
-
-    def test_from_native_custom_format(self):
-        """
-        Make sure from_native() accepts custom input formats.
-        """
-        f = serializers.DateTimeField(input_formats=['%Y -- %H:%M'])
-        result = f.from_native('1984 -- 04:59')
-
-        self.assertEqual(datetime.datetime(1984, 1, 1, 4, 59), result)
-
-    def test_from_native_invalid_default_on_custom_format(self):
-        """
-        Make sure from_native() don't accept default formats if custom format is preset
-        """
-        f = serializers.DateTimeField(input_formats=['%Y -- %H:%M'])
-
-        try:
-            f.from_native('1984-07-31 04:31:59')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: YYYY -- hh:mm"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_empty(self):
-        """
-        Make sure from_native() returns None on empty param.
-        """
-        f = serializers.DateTimeField()
-        result = f.from_native('')
-
-        self.assertEqual(result, None)
-
-    def test_from_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.DateTimeField()
-        result = f.from_native(None)
-
-        self.assertEqual(result, None)
-
-    def test_from_native_invalid_datetime(self):
-        """
-        Make sure from_native() raises a ValidationError on passing an invalid datetime.
-        """
-        f = serializers.DateTimeField()
-
-        try:
-            f.from_native('04:61:59')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: "
-                                          "YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HHMM|-HHMM|Z]"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_invalid_format(self):
-        """
-        Make sure from_native() raises a ValidationError on passing an invalid format.
-        """
-        f = serializers.DateTimeField()
-
-        try:
-            f.from_native('04 -- 31')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: "
-                                          "YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HHMM|-HHMM|Z]"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_to_native(self):
-        """
-        Make sure to_native() returns isoformat as default.
-        """
-        f = serializers.DateTimeField()
-
-        result_1 = f.to_native(datetime.datetime(1984, 7, 31))
-        result_2 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31))
-        result_3 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31, 59))
-        result_4 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31, 59, 200))
-
-        self.assertEqual(datetime.datetime(1984, 7, 31), result_1)
-        self.assertEqual(datetime.datetime(1984, 7, 31, 4, 31), result_2)
-        self.assertEqual(datetime.datetime(1984, 7, 31, 4, 31, 59), result_3)
-        self.assertEqual(datetime.datetime(1984, 7, 31, 4, 31, 59, 200), result_4)
-
-    def test_to_native_iso(self):
-        """
-        Make sure to_native() with format=iso-8601 returns iso formatted datetime.
-        """
-        f = serializers.DateTimeField(format='iso-8601')
-
-        result_1 = f.to_native(datetime.datetime(1984, 7, 31))
-        result_2 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31))
-        result_3 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31, 59))
-        result_4 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31, 59, 200))
-
-        self.assertEqual('1984-07-31T00:00:00', result_1)
-        self.assertEqual('1984-07-31T04:31:00', result_2)
-        self.assertEqual('1984-07-31T04:31:59', result_3)
-        self.assertEqual('1984-07-31T04:31:59.000200', result_4)
-
-    def test_to_native_custom_format(self):
-        """
-        Make sure to_native() returns correct custom format.
-        """
-        f = serializers.DateTimeField(format="%Y - %H:%M")
-
-        result_1 = f.to_native(datetime.datetime(1984, 7, 31))
-        result_2 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31))
-        result_3 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31, 59))
-        result_4 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31, 59, 200))
-
-        self.assertEqual('1984 - 00:00', result_1)
-        self.assertEqual('1984 - 04:31', result_2)
-        self.assertEqual('1984 - 04:31', result_3)
-        self.assertEqual('1984 - 04:31', result_4)
-
-    def test_to_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.DateTimeField(required=False)
-        self.assertEqual(None, f.to_native(None))
-
-
-class TimeFieldTest(TestCase):
-    """
-    Tests for the TimeField from_native() and to_native() behavior
-    """
-
-    def test_from_native_string(self):
-        """
-        Make sure from_native() accepts default iso input formats.
-        """
-        f = serializers.TimeField()
-        result_1 = f.from_native('04:31')
-        result_2 = f.from_native('04:31:59')
-        result_3 = f.from_native('04:31:59.000200')
-
-        self.assertEqual(datetime.time(4, 31), result_1)
-        self.assertEqual(datetime.time(4, 31, 59), result_2)
-        self.assertEqual(datetime.time(4, 31, 59, 200), result_3)
-
-    def test_from_native_datetime_time(self):
-        """
-        Make sure from_native() accepts a datetime.time instance.
-        """
-        f = serializers.TimeField()
-        result_1 = f.from_native(datetime.time(4, 31))
-        result_2 = f.from_native(datetime.time(4, 31, 59))
-        result_3 = f.from_native(datetime.time(4, 31, 59, 200))
-
-        self.assertEqual(result_1, datetime.time(4, 31))
-        self.assertEqual(result_2, datetime.time(4, 31, 59))
-        self.assertEqual(result_3, datetime.time(4, 31, 59, 200))
-
-    def test_from_native_custom_format(self):
-        """
-        Make sure from_native() accepts custom input formats.
-        """
-        f = serializers.TimeField(input_formats=['%H -- %M'])
-        result = f.from_native('04 -- 31')
-
-        self.assertEqual(datetime.time(4, 31), result)
-
-    def test_from_native_invalid_default_on_custom_format(self):
-        """
-        Make sure from_native() don't accept default formats if custom format is preset
-        """
-        f = serializers.TimeField(input_formats=['%H -- %M'])
-
-        try:
-            f.from_native('04:31:59')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: hh -- mm"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_empty(self):
-        """
-        Make sure from_native() returns None on empty param.
-        """
-        f = serializers.TimeField()
-        result = f.from_native('')
-
-        self.assertEqual(result, None)
-
-    def test_from_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.TimeField()
-        result = f.from_native(None)
-
-        self.assertEqual(result, None)
-
-    def test_from_native_invalid_time(self):
-        """
-        Make sure from_native() raises a ValidationError on passing an invalid time.
-        """
-        f = serializers.TimeField()
-
-        try:
-            f.from_native('04:61:59')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: "
-                                          "hh:mm[:ss[.uuuuuu]]"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_invalid_format(self):
-        """
-        Make sure from_native() raises a ValidationError on passing an invalid format.
-        """
-        f = serializers.TimeField()
-
-        try:
-            f.from_native('04 -- 31')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: "
-                                          "hh:mm[:ss[.uuuuuu]]"])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_to_native(self):
-        """
-        Make sure to_native() returns time object as default.
-        """
-        f = serializers.TimeField()
-        result_1 = f.to_native(datetime.time(4, 31))
-        result_2 = f.to_native(datetime.time(4, 31, 59))
-        result_3 = f.to_native(datetime.time(4, 31, 59, 200))
-
-        self.assertEqual(datetime.time(4, 31), result_1)
-        self.assertEqual(datetime.time(4, 31, 59), result_2)
-        self.assertEqual(datetime.time(4, 31, 59, 200), result_3)
-
-    def test_to_native_iso(self):
-        """
-        Make sure to_native() with format='iso-8601' returns iso formatted time.
-        """
-        f = serializers.TimeField(format='iso-8601')
-        result_1 = f.to_native(datetime.time(4, 31))
-        result_2 = f.to_native(datetime.time(4, 31, 59))
-        result_3 = f.to_native(datetime.time(4, 31, 59, 200))
-
-        self.assertEqual('04:31:00', result_1)
-        self.assertEqual('04:31:59', result_2)
-        self.assertEqual('04:31:59.000200', result_3)
-
-    def test_to_native_custom_format(self):
-        """
-        Make sure to_native() returns correct custom format.
-        """
-        f = serializers.TimeField(format="%H - %S [%f]")
-        result_1 = f.to_native(datetime.time(4, 31))
-        result_2 = f.to_native(datetime.time(4, 31, 59))
-        result_3 = f.to_native(datetime.time(4, 31, 59, 200))
-
-        self.assertEqual('04 - 00 [000000]', result_1)
-        self.assertEqual('04 - 59 [000000]', result_2)
-        self.assertEqual('04 - 59 [000200]', result_3)
-
-
-class DecimalFieldTest(TestCase):
-    """
-    Tests for the DecimalField from_native() and to_native() behavior
-    """
-
-    def test_from_native_string(self):
-        """
-        Make sure from_native() accepts string values
-        """
-        f = serializers.DecimalField()
-        result_1 = f.from_native('9000')
-        result_2 = f.from_native('1.00000001')
-
-        self.assertEqual(Decimal('9000'), result_1)
-        self.assertEqual(Decimal('1.00000001'), result_2)
-
-    def test_from_native_invalid_string(self):
-        """
-        Make sure from_native() raises ValidationError on passing invalid string
-        """
-        f = serializers.DecimalField()
-
-        try:
-            f.from_native('123.45.6')
-        except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Enter a number."])
-        else:
-            self.fail("ValidationError was not properly raised")
-
-    def test_from_native_integer(self):
-        """
-        Make sure from_native() accepts integer values
-        """
-        f = serializers.DecimalField()
-        result = f.from_native(9000)
-
-        self.assertEqual(Decimal('9000'), result)
-
-    def test_from_native_float(self):
-        """
-        Make sure from_native() accepts float values
-        """
-        f = serializers.DecimalField()
-        result = f.from_native(1.00000001)
-
-        self.assertEqual(Decimal('1.00000001'), result)
-
-    def test_from_native_empty(self):
-        """
-        Make sure from_native() returns None on empty param.
-        """
-        f = serializers.DecimalField()
-        result = f.from_native('')
-
-        self.assertEqual(result, None)
-
-    def test_from_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.DecimalField()
-        result = f.from_native(None)
-
-        self.assertEqual(result, None)
-
-    def test_to_native(self):
-        """
-        Make sure to_native() returns Decimal as string.
-        """
-        f = serializers.DecimalField()
-
-        result_1 = f.to_native(Decimal('9000'))
-        result_2 = f.to_native(Decimal('1.00000001'))
-
-        self.assertEqual(Decimal('9000'), result_1)
-        self.assertEqual(Decimal('1.00000001'), result_2)
-
-    def test_to_native_none(self):
-        """
-        Make sure from_native() returns None on None param.
-        """
-        f = serializers.DecimalField(required=False)
-        self.assertEqual(None, f.to_native(None))
-
-    def test_valid_serialization(self):
-        """
-        Make sure the serializer works correctly
-        """
-        class DecimalSerializer(serializers.Serializer):
-            decimal_field = serializers.DecimalField(max_value=9010,
-                                                     min_value=9000,
-                                                     max_digits=6,
-                                                     decimal_places=2)
-
-        self.assertTrue(DecimalSerializer(data={'decimal_field': '9001'}).is_valid())
-        self.assertTrue(DecimalSerializer(data={'decimal_field': '9001.2'}).is_valid())
-        self.assertTrue(DecimalSerializer(data={'decimal_field': '9001.23'}).is_valid())
-
-        self.assertFalse(DecimalSerializer(data={'decimal_field': '8000'}).is_valid())
-        self.assertFalse(DecimalSerializer(data={'decimal_field': '9900'}).is_valid())
-        self.assertFalse(DecimalSerializer(data={'decimal_field': '9001.234'}).is_valid())
-
-    def test_raise_max_value(self):
-        """
-        Make sure max_value violations raises ValidationError
-        """
-        class DecimalSerializer(serializers.Serializer):
-            decimal_field = serializers.DecimalField(max_value=100)
-
-        s = DecimalSerializer(data={'decimal_field': '123'})
-
-        self.assertFalse(s.is_valid())
-        self.assertEqual(s.errors,  {'decimal_field': ['Ensure this value is less than or equal to 100.']})
-
-    def test_raise_min_value(self):
-        """
-        Make sure min_value violations raises ValidationError
-        """
-        class DecimalSerializer(serializers.Serializer):
-            decimal_field = serializers.DecimalField(min_value=100)
-
-        s = DecimalSerializer(data={'decimal_field': '99'})
-
-        self.assertFalse(s.is_valid())
-        self.assertEqual(s.errors,  {'decimal_field': ['Ensure this value is greater than or equal to 100.']})
-
-    def test_raise_max_digits(self):
-        """
-        Make sure max_digits violations raises ValidationError
-        """
-        class DecimalSerializer(serializers.Serializer):
-            decimal_field = serializers.DecimalField(max_digits=5)
-
-        s = DecimalSerializer(data={'decimal_field': '123.456'})
-
-        self.assertFalse(s.is_valid())
-        self.assertEqual(s.errors,  {'decimal_field': ['Ensure that there are no more than 5 digits in total.']})
-
-    def test_raise_max_decimal_places(self):
-        """
-        Make sure max_decimal_places violations raises ValidationError
-        """
-        class DecimalSerializer(serializers.Serializer):
-            decimal_field = serializers.DecimalField(decimal_places=3)
-
-        s = DecimalSerializer(data={'decimal_field': '123.4567'})
-
-        self.assertFalse(s.is_valid())
-        self.assertEqual(s.errors,  {'decimal_field': ['Ensure that there are no more than 3 decimal places.']})
-
-    def test_raise_max_whole_digits(self):
-        """
-        Make sure max_whole_digits violations raises ValidationError
-        """
-        class DecimalSerializer(serializers.Serializer):
-            decimal_field = serializers.DecimalField(max_digits=4, decimal_places=3)
-
-        s = DecimalSerializer(data={'decimal_field': '12345.6'})
-
-        self.assertFalse(s.is_valid())
-        self.assertEqual(s.errors,  {'decimal_field': ['Ensure that there are no more than 4 digits in total.']})
-
-
-class ChoiceFieldTests(TestCase):
-    """
-    Tests for the ChoiceField options generator
-    """
-    def test_choices_required(self):
-        """
-        Make sure proper choices are rendered if field is required
-        """
-        f = serializers.ChoiceField(required=True, choices=SAMPLE_CHOICES)
-        self.assertEqual(f.choices, SAMPLE_CHOICES)
-
-    def test_choices_not_required(self):
-        """
-        Make sure proper choices (plus blank) are rendered if the field isn't required
-        """
-        f = serializers.ChoiceField(required=False, choices=SAMPLE_CHOICES)
-        self.assertEqual(f.choices, models.fields.BLANK_CHOICE_DASH + SAMPLE_CHOICES)
-
-    def test_invalid_choice_model(self):
-        s = ChoiceFieldModelSerializer(data={'choice': 'wrong_value'})
-        self.assertFalse(s.is_valid())
-        self.assertEqual(s.errors,  {'choice': ['Select a valid choice. wrong_value is not one of the available choices.']})
-        self.assertEqual(s.data['choice'], '')
-
-    def test_empty_choice_model(self):
-        """
-        Test that the 'empty' value is correctly passed and used depending on
-        the 'null' property on the model field.
-        """
-        s = ChoiceFieldModelSerializer(data={'choice': ''})
-        self.assertTrue(s.is_valid())
-        self.assertEqual(s.data['choice'], '')
-
-        s = ChoiceFieldModelWithNullSerializer(data={'choice': ''})
-        self.assertTrue(s.is_valid())
-        self.assertEqual(s.data['choice'], None)
-
-    def test_from_native_empty(self):
-        """
-        Make sure from_native() returns an empty string on empty param by default.
-        """
-        f = serializers.ChoiceField(choices=SAMPLE_CHOICES)
-        self.assertEqual(f.from_native(''), '')
-        self.assertEqual(f.from_native(None), '')
-
-    def test_from_native_empty_override(self):
-        """
-        Make sure you can override from_native() behavior regarding empty values.
-        """
-        f = serializers.ChoiceField(choices=SAMPLE_CHOICES, empty=None)
-        self.assertEqual(f.from_native(''), None)
-        self.assertEqual(f.from_native(None), None)
-
-    def test_metadata_choices(self):
-        """
-        Make sure proper choices are included in the field's metadata.
-        """
-        choices = [{'value': v, 'display_name': n} for v, n in SAMPLE_CHOICES]
-        f = serializers.ChoiceField(choices=SAMPLE_CHOICES)
-        self.assertEqual(f.metadata()['choices'], choices)
-
-    def test_metadata_choices_not_required(self):
-        """
-        Make sure proper choices are included in the field's metadata.
-        """
-        choices = [{'value': v, 'display_name': n}
-                   for v, n in models.fields.BLANK_CHOICE_DASH + SAMPLE_CHOICES]
-        f = serializers.ChoiceField(required=False, choices=SAMPLE_CHOICES)
-        self.assertEqual(f.metadata()['choices'], choices)
-
-
-class EmailFieldTests(TestCase):
-    """
-    Tests for EmailField attribute values
-    """
-
-    class EmailFieldModel(RESTFrameworkModel):
-        email_field = models.EmailField(blank=True)
-
-    class EmailFieldWithGivenMaxLengthModel(RESTFrameworkModel):
-        email_field = models.EmailField(max_length=150, blank=True)
-
-    def test_default_model_value(self):
-        class EmailFieldSerializer(serializers.ModelSerializer):
-            class Meta:
-                model = self.EmailFieldModel
-
-        serializer = EmailFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['email_field'], 'max_length'), 75)
-
-    def test_given_model_value(self):
-        class EmailFieldSerializer(serializers.ModelSerializer):
-            class Meta:
-                model = self.EmailFieldWithGivenMaxLengthModel
-
-        serializer = EmailFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['email_field'], 'max_length'), 150)
-
-    def test_given_serializer_value(self):
-        class EmailFieldSerializer(serializers.ModelSerializer):
-            email_field = serializers.EmailField(source='email_field', max_length=20, required=False)
-
-            class Meta:
-                model = self.EmailFieldModel
-
-        serializer = EmailFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['email_field'], 'max_length'), 20)
-
-
-class SlugFieldTests(TestCase):
-    """
-    Tests for SlugField attribute values
-    """
-
-    class SlugFieldModel(RESTFrameworkModel):
-        slug_field = models.SlugField(blank=True)
-
-    class SlugFieldWithGivenMaxLengthModel(RESTFrameworkModel):
-        slug_field = models.SlugField(max_length=84, blank=True)
-
-    def test_default_model_value(self):
-        class SlugFieldSerializer(serializers.ModelSerializer):
-            class Meta:
-                model = self.SlugFieldModel
-
-        serializer = SlugFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['slug_field'], 'max_length'), 50)
-
-    def test_given_model_value(self):
-        class SlugFieldSerializer(serializers.ModelSerializer):
-            class Meta:
-                model = self.SlugFieldWithGivenMaxLengthModel
-
-        serializer = SlugFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['slug_field'], 'max_length'), 84)
-
-    def test_given_serializer_value(self):
-        class SlugFieldSerializer(serializers.ModelSerializer):
-            slug_field = serializers.SlugField(source='slug_field',
-                                               max_length=20, required=False)
-
-            class Meta:
-                model = self.SlugFieldModel
-
-        serializer = SlugFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['slug_field'],
-                                 'max_length'), 20)
-
-    def test_invalid_slug(self):
-        """
-        Make sure an invalid slug raises ValidationError
-        """
-        class SlugFieldSerializer(serializers.ModelSerializer):
-            slug_field = serializers.SlugField(source='slug_field', max_length=20, required=True)
-
-            class Meta:
-                model = self.SlugFieldModel
-
-        s = SlugFieldSerializer(data={'slug_field': 'a b'})
-
-        self.assertEqual(s.is_valid(), False)
-        self.assertEqual(s.errors,  {'slug_field': ["Enter a valid 'slug' consisting of letters, numbers, underscores or hyphens."]})
-
-
-class URLFieldTests(TestCase):
-    """
-    Tests for URLField attribute values.
-
-    (Includes test for #1210, checking that validators can be overridden.)
-    """
-
-    class URLFieldModel(RESTFrameworkModel):
-        url_field = models.URLField(blank=True)
-
-    class URLFieldWithGivenMaxLengthModel(RESTFrameworkModel):
-        url_field = models.URLField(max_length=128, blank=True)
-
-    def test_default_model_value(self):
-        class URLFieldSerializer(serializers.ModelSerializer):
-            class Meta:
-                model = self.URLFieldModel
-
-        serializer = URLFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['url_field'],
-                                 'max_length'), 200)
-
-    def test_given_model_value(self):
-        class URLFieldSerializer(serializers.ModelSerializer):
-            class Meta:
-                model = self.URLFieldWithGivenMaxLengthModel
-
-        serializer = URLFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['url_field'],
-                                 'max_length'), 128)
-
-    def test_given_serializer_value(self):
-        class URLFieldSerializer(serializers.ModelSerializer):
-            url_field = serializers.URLField(source='url_field',
-                                             max_length=20, required=False)
-
-            class Meta:
-                model = self.URLFieldWithGivenMaxLengthModel
-
-        serializer = URLFieldSerializer(data={})
-        self.assertEqual(serializer.is_valid(), True)
-        self.assertEqual(getattr(serializer.fields['url_field'],
-                         'max_length'), 20)
-
-    def test_validators_can_be_overridden(self):
-        url_field = serializers.URLField(validators=[])
-        validators = url_field.validators
-        self.assertEqual([], validators, 'Passing `validators` kwarg should have overridden default validators')
-
-
-class FieldMetadata(TestCase):
-    def setUp(self):
-        self.required_field = serializers.Field()
-        self.required_field.label = uuid4().hex
-        self.required_field.required = True
-
-        self.optional_field = serializers.Field()
-        self.optional_field.label = uuid4().hex
-        self.optional_field.required = False
-
-    def test_required(self):
-        self.assertEqual(self.required_field.metadata()['required'], True)
-
-    def test_optional(self):
-        self.assertEqual(self.optional_field.metadata()['required'], False)
-
-    def test_label(self):
-        for field in (self.required_field, self.optional_field):
-            self.assertEqual(field.metadata()['label'], field.label)
-
-
-class FieldCallableDefault(TestCase):
-    def setUp(self):
-        self.simple_callable = lambda: 'foo bar'
-
-    def test_default_can_be_simple_callable(self):
-        """
-        Ensure that the 'default' argument can also be a simple callable.
-        """
-        field = serializers.WritableField(default=self.simple_callable)
-        into = {}
-        field.field_from_native({}, {}, 'field', into)
-        self.assertEqual(into, {'field': 'foo bar'})
-
-
-class CustomIntegerField(TestCase):
-    """
-        Test that custom fields apply min_value and max_value constraints
-    """
-    def test_custom_fields_can_be_validated_for_value(self):
-
-        class MoneyField(models.PositiveIntegerField):
-            pass
-
-        class EntryModel(models.Model):
-            bank = MoneyField(validators=[validators.MaxValueValidator(100)])
-
-        class EntrySerializer(serializers.ModelSerializer):
-            class Meta:
-                model = EntryModel
-
-        entry = EntryModel(bank=1)
-
-        serializer = EntrySerializer(entry, data={"bank": 11})
-        self.assertTrue(serializer.is_valid())
-
-        serializer = EntrySerializer(entry, data={"bank": -1})
-        self.assertFalse(serializer.is_valid())
-
-        serializer = EntrySerializer(entry, data={"bank": 101})
-        self.assertFalse(serializer.is_valid())
-
-
-class BooleanField(TestCase):
-    """
-        Tests for BooleanField
-    """
-    def test_boolean_required(self):
-        class BooleanRequiredSerializer(serializers.Serializer):
-            bool_field = serializers.BooleanField(required=True)
-
-        self.assertFalse(BooleanRequiredSerializer(data={}).is_valid())