/
test_serializer_form.py
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test_serializer_form.py
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from __future__ import print_function, unicode_literals
import unittest
from datetime import datetime
import mock
import six
from django import forms
from rest_framework import serializers
from drf_braces.forms.serializer_form import (
SERIALIZER_FORM_FIELD_MAPPING,
SerializerForm,
SerializerFormBase,
SerializerFormMeta,
SerializerFormOptions,
form_from_serializer,
)
TESTING_MODULE = 'drf_braces.forms.serializer_form'
class TestSerializer(serializers.Serializer):
foo = serializers.CharField(read_only=True)
bar = serializers.IntegerField(min_value=0)
exclude = serializers.DateTimeField()
def validate_bar(self, value):
if value >= 1000:
raise serializers.ValidationError('Serializer failure')
return value
class TestForm(SerializerForm):
class Meta(object):
serializer = TestSerializer
fields = ['bar', 'foo']
exclude = ['exclude']
class TestSerializerFormOptions(unittest.TestCase):
def test_init(self):
_options = mock.Mock(serializer=serializers.Serializer)
options = SerializerFormOptions(_options)
self.assertEqual(options.serializer, _options.serializer)
self.assertEqual(options.fields, _options.fields)
self.assertEqual(options.exclude, _options.exclude)
self.assertEqual(options.field_mapping, _options.field_mapping)
def test_init_no_serializer(self):
with self.assertRaises(AssertionError):
SerializerFormOptions(None)
def test_init_not_drf_serializer(self):
with self.assertRaises(AssertionError):
SerializerFormOptions(mock.Mock(serializer=int))
class TestSerializerFormMeta(unittest.TestCase):
@mock.patch.dict(SERIALIZER_FORM_FIELD_MAPPING, {'base': 'mapping'}, clear=True)
def test_get_field_mapping(self):
class Base1B(object):
class _meta(object):
field_mapping = {
'hello': 'mars',
'hi': 'there',
'foo': 'bar',
}
class Base1A(Base1B):
class _meta(object):
field_mapping = {
'hello': 'world',
}
class Base2(object):
class _meta(object):
field_mapping = {
'hello': 'sun',
'something': 'here',
}
class Options(object):
field_mapping = {
'foo': 'baar',
'happy': 'rainbows',
}
mapping = SerializerFormMeta.get_field_mapping((Base1A, Base2), Options)
self.assertDictEqual(mapping, {
'hi': 'there',
'hello': 'world',
'something': 'here',
'base': 'mapping',
'foo': 'baar',
'happy': 'rainbows',
})
def test_get_form_fields_from_serializer(self):
fields = SerializerFormMeta.get_form_fields_from_serializer(
(object,), mock.Mock(serializer=TestSerializer,
fields=['foo', 'bar'],
exclude=['exclude'],
field_mapping={})
)
self.assertSetEqual(set(fields.keys()), {'bar'})
self.assertIsInstance(fields['bar'], forms.IntegerField)
def test_get_form_fields_from_serializer_unmapped_field(self):
class CustomField(serializers.Field):
pass
class MySerializer(serializers.Serializer):
foo = serializers.CharField(read_only=True)
bar = CustomField()
with self.assertRaises(TypeError):
SerializerFormMeta.get_form_fields_from_serializer(
(object,), mock.Mock(serializer=MySerializer,
fields=['foo', 'bar'],
exclude=[],
field_mapping={})
)
@mock.patch(TESTING_MODULE + '.SerializerFormOptions')
def test_new_no_parents(self, mock_serializer_form_options):
class TestForm(six.with_metaclass(SerializerFormMeta, forms.Form)):
pass
self.assertFalse(mock_serializer_form_options.called)
def test_new(self):
class TestForm(six.with_metaclass(SerializerFormMeta, SerializerForm)):
class Meta(object):
serializer = TestSerializer
fields = ['bar', 'foo']
exclude = ['exclude']
self.assertIsInstance(TestForm._meta, SerializerFormOptions)
self.assertSetEqual(set(TestForm.base_fields.keys()), {'bar'})
class TestSerializerFormBase(unittest.TestCase):
def test_init(self):
self.assertIsNone(SerializerFormBase().serializer)
def test_get_serializer_context(self):
self.assertDictEqual(SerializerFormBase().get_serializer_context(), {})
def test_get_serializer_data(self):
form = SerializerFormBase()
form.cleaned_data = {'hello': 'world'}
form.initial = {'stuff': 'here', 'hello': 'mars'}
self.assertDictEqual(form.get_serializer_data(), {
'hello': 'world',
'stuff': 'here',
})
@mock.patch.object(SerializerFormBase, 'get_serializer_data')
@mock.patch.object(SerializerFormBase, 'get_serializer_context')
def test_get_serializer(self, mock_get_serializer_context, mock_get_serializer_data):
form = SerializerFormBase()
mock_serializer = mock.Mock()
form._meta = mock.Mock(serializer=mock_serializer)
actual = form.get_serializer()
self.assertEqual(actual, mock_serializer.return_value)
mock_serializer.assert_called_once_with(
data=mock_get_serializer_data.return_value,
context=mock_get_serializer_context.return_value,
)
@mock.patch.object(SerializerFormBase, 'get_serializer')
def test_clean_form_valid(self, mock_get_serializer):
class TestForm(SerializerFormBase):
hello = forms.CharField()
form = TestForm(data={'hello': 'world'})
mock_get_serializer.return_value.is_valid.return_value = True
mock_get_serializer.return_value.validated_data = {
'and': 'mars'
}
self.assertTrue(form.is_valid(), form.errors)
self.assertEqual(form.cleaned_data, {
'hello': 'world',
'and': 'mars',
})
@mock.patch.object(SerializerFormBase, 'get_serializer')
def test_clean_form_invalid(self, mock_get_serializer):
form = SerializerFormBase(data={})
mock_get_serializer.return_value.is_valid.return_value = False
mock_get_serializer.return_value.errors = {
'field': ['error'],
}
self.assertFalse(form.is_valid(), form.errors)
self.assertEqual(form.errors, {'field': ['error']})
class TestSerializerForm(unittest.TestCase):
def test_full_clean_valid(self):
data = {
'foo': 'anything',
'bar': '500',
'exclude': '2015-01-01T12:00'
}
initial = {
'exclude': datetime(2016, 1, 1, 16, 30)
}
form = TestForm(data=data, initial=initial)
self.assertTrue(form.is_valid(), dict(form.errors))
self.assertDictEqual(form.cleaned_data, {
'bar': 500,
'exclude': datetime(2016, 1, 1, 16, 30)
})
def test_full_clean_invalid(self):
data = {
'foo': 'anything',
'bar': '1000',
'exclude': '2015-01-01T12:00'
}
initial = {
'exclude': datetime(2016, 1, 1, 16, 30)
}
form = TestForm(data=data, initial=initial)
self.assertFalse(form.is_valid())
self.assertIn('bar', form.errors)
class TestUtils(unittest.TestCase):
def test_form_from_serializer_not_serializer(self):
with self.assertRaises(AssertionError):
form_from_serializer(None)
def test_form_from_serializer(self):
form = form_from_serializer(TestSerializer, fields=['foo', 'bar'], exclude=['exclude'])
self.assertTrue(issubclass(form, SerializerForm))
self.assertIsInstance(form._meta, SerializerFormOptions)
self.assertListEqual(form._meta.fields, ['foo', 'bar'])
self.assertListEqual(form._meta.exclude, ['exclude'])
self.assertIs(form._meta.serializer, TestSerializer)