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563a20a040
django-rest-framework/tests/test_fields.py
Krukov D 281fc074ba
improve performance for noncallble attributes (#8502) 
Co-authored-by: Dima Kryukov <dmitry.kryukov@pandadoc.com>
2022-06-06 12:54:57 +01:00

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import datetime
import os
import re
import uuid
from decimal import ROUND_DOWN, ROUND_UP, Decimal
import pytest
import pytz
from django.core.exceptions import ValidationError as DjangoValidationError
from django.http import QueryDict
from django.test import TestCase, override_settings
from django.utils.timezone import activate, deactivate, override
import rest_framework
from rest_framework import exceptions, serializers
from rest_framework.fields import (
BuiltinSignatureError, DjangoImageField, is_simple_callable
)
utc = datetime.timezone.utc
# Tests for helper functions.
# ---------------------------
class TestIsSimpleCallable:
def test_method(self):
class Foo:
@classmethod
def classmethod(cls):
pass
def valid(self):
pass
def valid_kwargs(self, param='value'):
pass
def valid_vargs_kwargs(self, *args, **kwargs):
pass
def invalid(self, param):
pass
assert is_simple_callable(Foo.classmethod)
# unbound methods
assert not is_simple_callable(Foo.valid)
assert not is_simple_callable(Foo.valid_kwargs)
assert not is_simple_callable(Foo.valid_vargs_kwargs)
assert not is_simple_callable(Foo.invalid)
# bound methods
assert is_simple_callable(Foo().valid)
assert is_simple_callable(Foo().valid_kwargs)
assert is_simple_callable(Foo().valid_vargs_kwargs)
assert not is_simple_callable(Foo().invalid)
def test_function(self):
def simple():
pass
def valid(param='value', param2='value'):
pass
def valid_vargs_kwargs(*args, **kwargs):
pass
def invalid(param, param2='value'):
pass
assert is_simple_callable(simple)
assert is_simple_callable(valid)
assert is_simple_callable(valid_vargs_kwargs)
assert not is_simple_callable(invalid)
@pytest.mark.parametrize('obj', (True, None, "str", b'bytes', 123, 1.23))
def test_not_callable(self, obj):
assert not is_simple_callable(obj)
def test_4602_regression(self):
from django.db import models
class ChoiceModel(models.Model):
choice_field = models.CharField(
max_length=1, default='a',
choices=(('a', 'A'), ('b', 'B')),
)
class Meta:
app_label = 'tests'
assert is_simple_callable(ChoiceModel().get_choice_field_display)
def test_builtin_function(self):
# Built-in function signatures are not easily inspectable, so the
# current expectation is to just raise a helpful error message.
timestamp = datetime.datetime.now()
with pytest.raises(BuiltinSignatureError) as exc_info:
is_simple_callable(timestamp.date)
assert str(exc_info.value) == (
'Built-in function signatures are not inspectable. Wrap the '
'function call in a simple, pure Python function.')
def test_type_annotation(self):
# The annotation will otherwise raise a syntax error in python < 3.5
locals = {}
exec("def valid(param: str='value'): pass", locals)
valid = locals['valid']
assert is_simple_callable(valid)
# Tests for field keyword arguments and core functionality.
# ---------------------------------------------------------
class TestEmpty:
"""
Tests for `required`, `allow_null`, `allow_blank`, `default`.
"""
def test_required(self):
"""
By default a field must be included in the input.
"""
field = serializers.IntegerField()
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation()
assert exc_info.value.detail == ['This field is required.']
def test_not_required(self):
"""
If `required=False` then a field may be omitted from the input.
"""
field = serializers.IntegerField(required=False)
with pytest.raises(serializers.SkipField):
field.run_validation()
def test_disallow_null(self):
"""
By default `None` is not a valid input.
"""
field = serializers.IntegerField()
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(None)
assert exc_info.value.detail == ['This field may not be null.']
def test_allow_null(self):
"""
If `allow_null=True` then `None` is a valid input.
"""
field = serializers.IntegerField(allow_null=True)
output = field.run_validation(None)
assert output is None
def test_disallow_blank(self):
"""
By default '' is not a valid input.
"""
field = serializers.CharField()
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation('')
assert exc_info.value.detail == ['This field may not be blank.']
def test_allow_blank(self):
"""
If `allow_blank=True` then '' is a valid input.
"""
field = serializers.CharField(allow_blank=True)
output = field.run_validation('')
assert output == ''
def test_default(self):
"""
If `default` is set, then omitted values get the default input.
"""
field = serializers.IntegerField(default=123)
output = field.run_validation()
assert output == 123
class TestSource:
def test_source(self):
class ExampleSerializer(serializers.Serializer):
example_field = serializers.CharField(source='other')
serializer = ExampleSerializer(data={'example_field': 'abc'})
assert serializer.is_valid()
assert serializer.validated_data == {'other': 'abc'}
def test_redundant_source(self):
class ExampleSerializer(serializers.Serializer):
example_field = serializers.CharField(source='example_field')
with pytest.raises(AssertionError) as exc_info:
ExampleSerializer().fields
assert str(exc_info.value) == (
"It is redundant to specify `source='example_field'` on field "
"'CharField' in serializer 'ExampleSerializer', because it is the "
"same as the field name. Remove the `source` keyword argument."
)
def test_callable_source(self):
class ExampleSerializer(serializers.Serializer):
example_field = serializers.CharField(source='example_callable')
class ExampleInstance:
def example_callable(self):
return 'example callable value'
serializer = ExampleSerializer(ExampleInstance())
assert serializer.data['example_field'] == 'example callable value'
def test_callable_source_raises(self):
class ExampleSerializer(serializers.Serializer):
example_field = serializers.CharField(source='example_callable', read_only=True)
class ExampleInstance:
def example_callable(self):
raise AttributeError('method call failed')
with pytest.raises(ValueError) as exc_info:
serializer = ExampleSerializer(ExampleInstance())
serializer.data.items()
assert 'method call failed' in str(exc_info.value)
def test_builtin_callable_source_raises(self):
class BuiltinSerializer(serializers.Serializer):
date = serializers.ReadOnlyField(source='timestamp.date')
with pytest.raises(BuiltinSignatureError) as exc_info:
BuiltinSerializer({'timestamp': datetime.datetime.now()}).data
assert str(exc_info.value) == (
'Field source for `BuiltinSerializer.date` maps to a built-in '
'function type and is invalid. Define a property or method on '
'the `dict` instance that wraps the call to the built-in function.')
class TestReadOnly:
def setup(self):
class TestSerializer(serializers.Serializer):
read_only = serializers.ReadOnlyField(default="789")
writable = serializers.IntegerField()
self.Serializer = TestSerializer
def test_writable_fields(self):
"""
Read-only fields should not be writable, even with default ()
"""
serializer = self.Serializer()
assert len(list(serializer._writable_fields)) == 1
def test_validate_read_only(self):
"""
Read-only serializers.should not be included in validation.
"""
data = {'read_only': 123, 'writable': 456}
serializer = self.Serializer(data=data)
assert serializer.is_valid()
assert serializer.validated_data == {'writable': 456}
def test_serialize_read_only(self):
"""
Read-only serializers.should be serialized.
"""
instance = {'read_only': 123, 'writable': 456}
serializer = self.Serializer(instance)
assert serializer.data == {'read_only': 123, 'writable': 456}
class TestWriteOnly:
def setup(self):
class TestSerializer(serializers.Serializer):
write_only = serializers.IntegerField(write_only=True)
readable = serializers.IntegerField()
self.Serializer = TestSerializer
def test_validate_write_only(self):
"""
Write-only serializers.should be included in validation.
"""
data = {'write_only': 123, 'readable': 456}
serializer = self.Serializer(data=data)
assert serializer.is_valid()
assert serializer.validated_data == {'write_only': 123, 'readable': 456}
def test_serialize_write_only(self):
"""
Write-only serializers.should not be serialized.
"""
instance = {'write_only': 123, 'readable': 456}
serializer = self.Serializer(instance)
assert serializer.data == {'readable': 456}
class TestInitial:
def setup(self):
class TestSerializer(serializers.Serializer):
initial_field = serializers.IntegerField(initial=123)
blank_field = serializers.IntegerField()
self.serializer = TestSerializer()
def test_initial(self):
"""
Initial values should be included when serializing a new representation.
"""
assert self.serializer.data == {
'initial_field': 123,
'blank_field': None
}
class TestInitialWithCallable:
def setup(self):
def initial_value():
return 123
class TestSerializer(serializers.Serializer):
initial_field = serializers.IntegerField(initial=initial_value)
self.serializer = TestSerializer()
def test_initial_should_accept_callable(self):
"""
Follows the default ``Field.initial`` behaviour where they accept a
callable to produce the initial value"""
assert self.serializer.data == {
'initial_field': 123,
}
class TestLabel:
def setup(self):
class TestSerializer(serializers.Serializer):
labeled = serializers.IntegerField(label='My label')
self.serializer = TestSerializer()
def test_label(self):
"""
A field's label may be set with the `label` argument.
"""
fields = self.serializer.fields
assert fields['labeled'].label == 'My label'
class TestInvalidErrorKey:
def setup(self):
class ExampleField(serializers.Field):
def to_native(self, data):
self.fail('incorrect')
self.field = ExampleField()
def test_invalid_error_key(self):
"""
If a field raises a validation error, but does not have a corresponding
error message, then raise an appropriate assertion error.
"""
with pytest.raises(AssertionError) as exc_info:
self.field.to_native(123)
expected = (
'ValidationError raised by `ExampleField`, but error key '
'`incorrect` does not exist in the `error_messages` dictionary.'
)
assert str(exc_info.value) == expected
class TestBooleanHTMLInput:
def test_empty_html_checkbox(self):
"""
HTML checkboxes do not send any value, but should be treated
as `False` by BooleanField.
"""
class TestSerializer(serializers.Serializer):
archived = serializers.BooleanField()
serializer = TestSerializer(data=QueryDict(''))
assert serializer.is_valid()
assert serializer.validated_data == {'archived': False}
def test_empty_html_checkbox_not_required(self):
"""
HTML checkboxes do not send any value, but should be treated
as `False` by BooleanField, even if the field is required=False.
"""
class TestSerializer(serializers.Serializer):
archived = serializers.BooleanField(required=False)
serializer = TestSerializer(data=QueryDict(''))
assert serializer.is_valid()
assert serializer.validated_data == {'archived': False}
class TestHTMLInput:
def test_empty_html_charfield_with_default(self):
class TestSerializer(serializers.Serializer):
message = serializers.CharField(default='happy')
serializer = TestSerializer(data=QueryDict(''))
assert serializer.is_valid()
assert serializer.validated_data == {'message': 'happy'}
def test_empty_html_charfield_without_default(self):
class TestSerializer(serializers.Serializer):
message = serializers.CharField(allow_blank=True)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert serializer.validated_data == {'message': ''}
def test_empty_html_charfield_without_default_not_required(self):
class TestSerializer(serializers.Serializer):
message = serializers.CharField(allow_blank=True, required=False)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert serializer.validated_data == {'message': ''}
def test_empty_html_integerfield(self):
class TestSerializer(serializers.Serializer):
message = serializers.IntegerField(default=123)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert serializer.validated_data == {'message': 123}
def test_empty_html_uuidfield_with_default(self):
class TestSerializer(serializers.Serializer):
message = serializers.UUIDField(default=uuid.uuid4)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert list(serializer.validated_data) == ['message']
def test_empty_html_uuidfield_with_optional(self):
class TestSerializer(serializers.Serializer):
message = serializers.UUIDField(required=False)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert list(serializer.validated_data) == []
def test_empty_html_charfield_allow_null(self):
class TestSerializer(serializers.Serializer):
message = serializers.CharField(allow_null=True)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert serializer.validated_data == {'message': None}
def test_empty_html_datefield_allow_null(self):
class TestSerializer(serializers.Serializer):
expiry = serializers.DateField(allow_null=True)
serializer = TestSerializer(data=QueryDict('expiry='))
assert serializer.is_valid()
assert serializer.validated_data == {'expiry': None}
def test_empty_html_charfield_allow_null_allow_blank(self):
class TestSerializer(serializers.Serializer):
message = serializers.CharField(allow_null=True, allow_blank=True)
serializer = TestSerializer(data=QueryDict('message='))
assert serializer.is_valid()
assert serializer.validated_data == {'message': ''}
def test_empty_html_charfield_required_false(self):
class TestSerializer(serializers.Serializer):
message = serializers.CharField(required=False)
serializer = TestSerializer(data=QueryDict(''))
assert serializer.is_valid()
assert serializer.validated_data == {}
def test_querydict_list_input(self):
class TestSerializer(serializers.Serializer):
scores = serializers.ListField(child=serializers.IntegerField())
serializer = TestSerializer(data=QueryDict('scores=1&scores=3'))
assert serializer.is_valid()
assert serializer.validated_data == {'scores': [1, 3]}
def test_querydict_list_input_only_one_input(self):
class TestSerializer(serializers.Serializer):
scores = serializers.ListField(child=serializers.IntegerField())
serializer = TestSerializer(data=QueryDict('scores=1&'))
assert serializer.is_valid()
assert serializer.validated_data == {'scores': [1]}
def test_querydict_list_input_no_values_uses_default(self):
"""
When there are no values passed in, and default is set
The field should return the default value
"""
class TestSerializer(serializers.Serializer):
a = serializers.IntegerField(required=True)
scores = serializers.ListField(default=lambda: [1, 3])
serializer = TestSerializer(data=QueryDict('a=1&'))
assert serializer.is_valid()
assert serializer.validated_data == {'a': 1, 'scores': [1, 3]}
def test_querydict_list_input_supports_indexed_keys(self):
"""
When data is passed in the format `scores[0]=1&scores[1]=3`
The field should return the correct list, ignoring the default
"""
class TestSerializer(serializers.Serializer):
scores = serializers.ListField(default=lambda: [1, 3])
serializer = TestSerializer(data=QueryDict("scores[0]=5&scores[1]=6"))
assert serializer.is_valid()
assert serializer.validated_data == {'scores': ['5', '6']}
def test_querydict_list_input_no_values_no_default_and_not_required(self):
"""
When there are no keys passed, there is no default, and required=False
The field should be skipped
"""
class TestSerializer(serializers.Serializer):
scores = serializers.ListField(required=False)
serializer = TestSerializer(data=QueryDict(''))
assert serializer.is_valid()
assert serializer.validated_data == {}
def test_querydict_list_input_posts_key_but_no_values(self):
"""
When there are no keys passed, there is no default, and required=False
The field should return an array of 1 item, blank
"""
class TestSerializer(serializers.Serializer):
scores = serializers.ListField(required=False)
serializer = TestSerializer(data=QueryDict('scores=&'))
assert serializer.is_valid()
assert serializer.validated_data == {'scores': ['']}
class TestCreateOnlyDefault:
def setup(self):
default = serializers.CreateOnlyDefault('2001-01-01')
class TestSerializer(serializers.Serializer):
published = serializers.HiddenField(default=default)
text = serializers.CharField()
self.Serializer = TestSerializer
def test_create_only_default_is_provided(self):
serializer = self.Serializer(data={'text': 'example'})
assert serializer.is_valid()
assert serializer.validated_data == {
'text': 'example', 'published': '2001-01-01'
}
def test_create_only_default_is_not_provided_on_update(self):
instance = {
'text': 'example', 'published': '2001-01-01'
}
serializer = self.Serializer(instance, data={'text': 'example'})
assert serializer.is_valid()
assert serializer.validated_data == {
'text': 'example',
}
def test_create_only_default_callable_sets_context(self):
"""
CreateOnlyDefault instances with a callable default should set_context
on the callable if possible
"""
class TestCallableDefault:
requires_context = True
def __call__(self, field=None):
return "success" if field is not None else "failure"
class TestSerializer(serializers.Serializer):
context_set = serializers.CharField(default=serializers.CreateOnlyDefault(TestCallableDefault()))
serializer = TestSerializer(data={})
assert serializer.is_valid()
assert serializer.validated_data['context_set'] == 'success'
class Test5087Regression:
def test_parent_binding(self):
parent = serializers.Serializer()
field = serializers.CharField()
assert field.root is field
field.bind('name', parent)
assert field.root is parent
# Tests for field input and output values.
# ----------------------------------------
def get_items(mapping_or_list_of_two_tuples):
# Tests accept either lists of two tuples, or dictionaries.
if isinstance(mapping_or_list_of_two_tuples, dict):
# {value: expected}
return mapping_or_list_of_two_tuples.items()
# [(value, expected), ...]
return mapping_or_list_of_two_tuples
class FieldValues:
"""
Base class for testing valid and invalid input values.
"""
def test_valid_inputs(self):
"""
Ensure that valid values return the expected validated data.
"""
for input_value, expected_output in get_items(self.valid_inputs):
assert self.field.run_validation(input_value) == expected_output, \
'input value: {}'.format(repr(input_value))
def test_invalid_inputs(self):
"""
Ensure that invalid values raise the expected validation error.
"""
for input_value, expected_failure in get_items(self.invalid_inputs):
with pytest.raises(serializers.ValidationError) as exc_info:
self.field.run_validation(input_value)
assert exc_info.value.detail == expected_failure, \
'input value: {}'.format(repr(input_value))
def test_outputs(self):
for output_value, expected_output in get_items(self.outputs):
assert self.field.to_representation(output_value) == expected_output, \
'output value: {}'.format(repr(output_value))
# Boolean types...
class TestBooleanField(FieldValues):
"""
Valid and invalid values for `BooleanField`.
"""
valid_inputs = {
'true': True,
'false': False,
'1': True,
'0': False,
1: True,
0: False,
True: True,
False: False,
}
invalid_inputs = {
'foo': ['Must be a valid boolean.'],
None: ['This field may not be null.']
}
outputs = {
'true': True,
'false': False,
'1': True,
'0': False,
1: True,
0: False,
True: True,
False: False,
'other': True
}
field = serializers.BooleanField()
def test_disallow_unhashable_collection_types(self):
inputs = (
[],
{},
)
field = self.field
for input_value in inputs:
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(input_value)
expected = ['Must be a valid boolean.']
assert exc_info.value.detail == expected
class TestNullBooleanField(TestBooleanField):
"""
Valid and invalid values for `NullBooleanField`.
"""
valid_inputs = {
'true': True,
'false': False,
'null': None,
True: True,
False: False,
None: None
}
invalid_inputs = {
'foo': ['Must be a valid boolean.'],
}
outputs = {
'true': True,
'false': False,
'null': None,
True: True,
False: False,
None: None,
'other': True
}
field = serializers.BooleanField(allow_null=True)
class TestNullableBooleanField(TestNullBooleanField):
"""
Valid and invalid values for `BooleanField` when `allow_null=True`.
"""
@property
def field(self):
return serializers.BooleanField(allow_null=True)
# String types...
class TestCharField(FieldValues):
"""
Valid and invalid values for `CharField`.
"""
valid_inputs = {
1: '1',
'abc': 'abc'
}
invalid_inputs = {
(): ['Not a valid string.'],
True: ['Not a valid string.'],
'': ['This field may not be blank.']
}
outputs = {
1: '1',
'abc': 'abc'
}
field = serializers.CharField()
def test_trim_whitespace_default(self):
field = serializers.CharField()
assert field.to_internal_value(' abc ') == 'abc'
def test_trim_whitespace_disabled(self):
field = serializers.CharField(trim_whitespace=False)
assert field.to_internal_value(' abc ') == ' abc '
def test_disallow_blank_with_trim_whitespace(self):
field = serializers.CharField(allow_blank=False, trim_whitespace=True)
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(' ')
assert exc_info.value.detail == ['This field may not be blank.']
def test_null_bytes(self):
field = serializers.CharField()
for value in ('\0', 'foo\0', '\0foo', 'foo\0foo'):
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(value)
assert exc_info.value.detail == [
'Null characters are not allowed.'
]
def test_surrogate_characters(self):
field = serializers.CharField()
for code_point, expected_message in (
(0xD800, 'Surrogate characters are not allowed: U+D800.'),
(0xDFFF, 'Surrogate characters are not allowed: U+DFFF.'),
):
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(chr(code_point))
assert exc_info.value.detail[0].code == 'surrogate_characters_not_allowed'
assert str(exc_info.value.detail[0]) == expected_message
for code_point in (0xD800 - 1, 0xDFFF + 1):
field.run_validation(chr(code_point))
def test_iterable_validators(self):
"""
Ensure `validators` parameter is compatible with reasonable iterables.
"""
value = 'example'
for validators in ([], (), set()):
field = serializers.CharField(validators=validators)
field.run_validation(value)
def raise_exception(value):
raise exceptions.ValidationError('Raised error')
for validators in ([raise_exception], (raise_exception,), {raise_exception}):
field = serializers.CharField(validators=validators)
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(value)
assert exc_info.value.detail == ['Raised error']
class TestEmailField(FieldValues):
"""
Valid and invalid values for `EmailField`.
"""
valid_inputs = {
'example@example.com': 'example@example.com',
' example@example.com ': 'example@example.com',
}
invalid_inputs = {
'examplecom': ['Enter a valid email address.']
}
outputs = {}
field = serializers.EmailField()
class TestRegexField(FieldValues):
"""
Valid and invalid values for `RegexField`.
"""
valid_inputs = {
'a9': 'a9',
}
invalid_inputs = {
'A9': ["This value does not match the required pattern."]
}
outputs = {}
field = serializers.RegexField(regex='[a-z][0-9]')
class TestiCompiledRegexField(FieldValues):
"""
Valid and invalid values for `RegexField`.
"""
valid_inputs = {
'a9': 'a9',
}
invalid_inputs = {
'A9': ["This value does not match the required pattern."]
}
outputs = {}
field = serializers.RegexField(regex=re.compile('[a-z][0-9]'))
class TestSlugField(FieldValues):
"""
Valid and invalid values for `SlugField`.
"""
valid_inputs = {
'slug-99': 'slug-99',
}
invalid_inputs = {
'slug 99': ['Enter a valid "slug" consisting of letters, numbers, underscores or hyphens.']
}
outputs = {}
field = serializers.SlugField()
def test_allow_unicode_true(self):
field = serializers.SlugField(allow_unicode=True)
validation_error = False
try:
field.run_validation('slug-99-\u0420')
except serializers.ValidationError:
validation_error = True
assert not validation_error
class TestURLField(FieldValues):
"""
Valid and invalid values for `URLField`.
"""
valid_inputs = {
'http://example.com': 'http://example.com',
}
invalid_inputs = {
'example.com': ['Enter a valid URL.']
}
outputs = {}
field = serializers.URLField()
class TestUUIDField(FieldValues):
"""
Valid and invalid values for `UUIDField`.
"""
valid_inputs = {
'825d7aeb-05a9-45b5-a5b7-05df87923cda': uuid.UUID('825d7aeb-05a9-45b5-a5b7-05df87923cda'),
'825d7aeb05a945b5a5b705df87923cda': uuid.UUID('825d7aeb-05a9-45b5-a5b7-05df87923cda'),
'urn:uuid:213b7d9b-244f-410d-828c-dabce7a2615d': uuid.UUID('213b7d9b-244f-410d-828c-dabce7a2615d'),
284758210125106368185219588917561929842: uuid.UUID('d63a6fb6-88d5-40c7-a91c-9edf73283072')
}
invalid_inputs = {
'825d7aeb-05a9-45b5-a5b7': ['Must be a valid UUID.'],
(1, 2, 3): ['Must be a valid UUID.']
}
outputs = {
uuid.UUID('825d7aeb-05a9-45b5-a5b7-05df87923cda'): '825d7aeb-05a9-45b5-a5b7-05df87923cda'
}
field = serializers.UUIDField()
def _test_format(self, uuid_format, formatted_uuid_0):
field = serializers.UUIDField(format=uuid_format)
assert field.to_representation(uuid.UUID(int=0)) == formatted_uuid_0
assert field.to_internal_value(formatted_uuid_0) == uuid.UUID(int=0)
def test_formats(self):
self._test_format('int', 0)
self._test_format('hex_verbose', '00000000-0000-0000-0000-000000000000')
self._test_format('urn', 'urn:uuid:00000000-0000-0000-0000-000000000000')
self._test_format('hex', '0' * 32)
class TestIPAddressField(FieldValues):
"""
Valid and invalid values for `IPAddressField`
"""
valid_inputs = {
'127.0.0.1': '127.0.0.1',
'192.168.33.255': '192.168.33.255',
'2001:0db8:85a3:0042:1000:8a2e:0370:7334': '2001:db8:85a3:42:1000:8a2e:370:7334',
'2001:cdba:0:0:0:0:3257:9652': '2001:cdba::3257:9652',
'2001:cdba::3257:9652': '2001:cdba::3257:9652'
}
invalid_inputs = {
'127001': ['Enter a valid IPv4 or IPv6 address.'],
'127.122.111.2231': ['Enter a valid IPv4 or IPv6 address.'],
'2001:::9652': ['Enter a valid IPv4 or IPv6 address.'],
'2001:0db8:85a3:0042:1000:8a2e:0370:73341': ['Enter a valid IPv4 or IPv6 address.'],
1000: ['Enter a valid IPv4 or IPv6 address.'],
}
outputs = {}
field = serializers.IPAddressField()
class TestIPv4AddressField(FieldValues):
"""
Valid and invalid values for `IPAddressField`
"""
valid_inputs = {
'127.0.0.1': '127.0.0.1',
'192.168.33.255': '192.168.33.255',
}
invalid_inputs = {
'127001': ['Enter a valid IPv4 address.'],
'127.122.111.2231': ['Enter a valid IPv4 address.'],
}
outputs = {}
field = serializers.IPAddressField(protocol='IPv4')
class TestIPv6AddressField(FieldValues):
"""
Valid and invalid values for `IPAddressField`
"""
valid_inputs = {
'2001:0db8:85a3:0042:1000:8a2e:0370:7334': '2001:db8:85a3:42:1000:8a2e:370:7334',
'2001:cdba:0:0:0:0:3257:9652': '2001:cdba::3257:9652',
'2001:cdba::3257:9652': '2001:cdba::3257:9652'
}
invalid_inputs = {
'2001:::9652': ['Enter a valid IPv4 or IPv6 address.'],
'2001:0db8:85a3:0042:1000:8a2e:0370:73341': ['Enter a valid IPv4 or IPv6 address.'],
}
outputs = {}
field = serializers.IPAddressField(protocol='IPv6')
class TestFilePathField(FieldValues):
"""
Valid and invalid values for `FilePathField`
"""
valid_inputs = {
__file__: __file__,
}
invalid_inputs = {
'wrong_path': ['"wrong_path" is not a valid path choice.']
}
outputs = {
}
field = serializers.FilePathField(
path=os.path.abspath(os.path.dirname(__file__))
)
# Number types...
class TestIntegerField(FieldValues):
"""
Valid and invalid values for `IntegerField`.
"""
valid_inputs = {
'1': 1,
'0': 0,
1: 1,
0: 0,
1.0: 1,
0.0: 0,
'1.0': 1
}
invalid_inputs = {
0.5: ['A valid integer is required.'],
'abc': ['A valid integer is required.'],
'0.5': ['A valid integer is required.']
}
outputs = {
'1': 1,
'0': 0,
1: 1,
0: 0,
1.0: 1,
0.0: 0
}
field = serializers.IntegerField()
class TestMinMaxIntegerField(FieldValues):
"""
Valid and invalid values for `IntegerField` with min and max limits.
"""
valid_inputs = {
'1': 1,
'3': 3,
1: 1,
3: 3,
}
invalid_inputs = {
0: ['Ensure this value is greater than or equal to 1.'],
4: ['Ensure this value is less than or equal to 3.'],
'0': ['Ensure this value is greater than or equal to 1.'],
'4': ['Ensure this value is less than or equal to 3.'],
}
outputs = {}
field = serializers.IntegerField(min_value=1, max_value=3)
class TestFloatField(FieldValues):
"""
Valid and invalid values for `FloatField`.
"""
valid_inputs = {
'1': 1.0,
'0': 0.0,
1: 1.0,
0: 0.0,
1.0: 1.0,
0.0: 0.0,
}
invalid_inputs = {
'abc': ["A valid number is required."]
}
outputs = {
'1': 1.0,
'0': 0.0,
1: 1.0,
0: 0.0,
1.0: 1.0,
0.0: 0.0,
}
field = serializers.FloatField()
class TestMinMaxFloatField(FieldValues):
"""
Valid and invalid values for `FloatField` with min and max limits.
"""
valid_inputs = {
'1': 1,
'3': 3,
1: 1,
3: 3,
1.0: 1.0,
3.0: 3.0,
}
invalid_inputs = {
0.9: ['Ensure this value is greater than or equal to 1.'],
3.1: ['Ensure this value is less than or equal to 3.'],
'0.0': ['Ensure this value is greater than or equal to 1.'],
'3.1': ['Ensure this value is less than or equal to 3.'],
}
outputs = {}
field = serializers.FloatField(min_value=1, max_value=3)
class TestDecimalField(FieldValues):
"""
Valid and invalid values for `DecimalField`.
"""
valid_inputs = {
'12.3': Decimal('12.3'),
'0.1': Decimal('0.1'),
10: Decimal('10'),
0: Decimal('0'),
12.3: Decimal('12.3'),
0.1: Decimal('0.1'),
'2E+1': Decimal('20'),
}
invalid_inputs = (
(None, ["This field may not be null."]),
('', ["A valid number is required."]),
(' ', ["A valid number is required."]),
('abc', ["A valid number is required."]),
(Decimal('Nan'), ["A valid number is required."]),
(Decimal('Snan'), ["A valid number is required."]),
(Decimal('Inf'), ["A valid number is required."]),
('12.345', ["Ensure that there are no more than 3 digits in total."]),
(200000000000.0, ["Ensure that there are no more than 3 digits in total."]),
('0.01', ["Ensure that there are no more than 1 decimal places."]),
(123, ["Ensure that there are no more than 2 digits before the decimal point."]),
('2E+2', ["Ensure that there are no more than 2 digits before the decimal point."])
)
outputs = {
'1': '1.0',
'0': '0.0',
'1.09': '1.1',
'0.04': '0.0',
1: '1.0',
0: '0.0',
Decimal('1.0'): '1.0',
Decimal('0.0'): '0.0',
Decimal('1.09'): '1.1',
Decimal('0.04'): '0.0'
}
field = serializers.DecimalField(max_digits=3, decimal_places=1)
class TestAllowNullDecimalField(FieldValues):
valid_inputs = {
None: None,
'': None,
' ': None,
}
invalid_inputs = {}
outputs = {
None: '',
}
field = serializers.DecimalField(max_digits=3, decimal_places=1, allow_null=True)
class TestAllowNullNoStringCoercionDecimalField(FieldValues):
valid_inputs = {
None: None,
'': None,
' ': None,
}
invalid_inputs = {}
outputs = {
None: None,
}
field = serializers.DecimalField(max_digits=3, decimal_places=1, allow_null=True, coerce_to_string=False)
class TestMinMaxDecimalField(FieldValues):
"""
Valid and invalid values for `DecimalField` with min and max limits.
"""
valid_inputs = {
'10.0': Decimal('10.0'),
'20.0': Decimal('20.0'),
}
invalid_inputs = {
'9.9': ['Ensure this value is greater than or equal to 10.'],
'20.1': ['Ensure this value is less than or equal to 20.'],
}
outputs = {}
field = serializers.DecimalField(
max_digits=3, decimal_places=1,
min_value=10, max_value=20
)
class TestAllowEmptyStrDecimalFieldWithValidators(FieldValues):
"""
Check that empty string ('', ' ') is acceptable value for the DecimalField
if allow_null=True and there are max/min validators
"""
valid_inputs = {
None: None,
'': None,
' ': None,
' ': None,
5: Decimal('5'),
'0': Decimal('0'),
'10': Decimal('10'),
}
invalid_inputs = {
-1: ['Ensure this value is greater than or equal to 0.'],
11: ['Ensure this value is less than or equal to 10.'],
}
outputs = {
None: '',
}
field = serializers.DecimalField(max_digits=3, decimal_places=1, allow_null=True, min_value=0, max_value=10)
class TestNoMaxDigitsDecimalField(FieldValues):
field = serializers.DecimalField(
max_value=100, min_value=0,
decimal_places=2, max_digits=None
)
valid_inputs = {
'10': Decimal('10.00')
}
invalid_inputs = {}
outputs = {}
class TestNoStringCoercionDecimalField(FieldValues):
"""
Output values for `DecimalField` with `coerce_to_string=False`.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
1.09: Decimal('1.1'),
0.04: Decimal('0.0'),
'1.09': Decimal('1.1'),
'0.04': Decimal('0.0'),
Decimal('1.09'): Decimal('1.1'),
Decimal('0.04'): Decimal('0.0'),
}
field = serializers.DecimalField(
max_digits=3, decimal_places=1,
coerce_to_string=False
)
class TestLocalizedDecimalField(TestCase):
@override_settings(LANGUAGE_CODE='pl')
def test_to_internal_value(self):
field = serializers.DecimalField(max_digits=2, decimal_places=1, localize=True)
assert field.to_internal_value('1,1') == Decimal('1.1')
@override_settings(LANGUAGE_CODE='pl')
def test_to_representation(self):
field = serializers.DecimalField(max_digits=2, decimal_places=1, localize=True)
assert field.to_representation(Decimal('1.1')) == '1,1'
def test_localize_forces_coerce_to_string(self):
field = serializers.DecimalField(max_digits=2, decimal_places=1, coerce_to_string=False, localize=True)
assert isinstance(field.to_representation(Decimal('1.1')), str)
class TestQuantizedValueForDecimal(TestCase):
def test_int_quantized_value_for_decimal(self):
field = serializers.DecimalField(max_digits=4, decimal_places=2)
value = field.to_internal_value(12).as_tuple()
expected_digit_tuple = (0, (1, 2, 0, 0), -2)
assert value == expected_digit_tuple
def test_string_quantized_value_for_decimal(self):
field = serializers.DecimalField(max_digits=4, decimal_places=2)
value = field.to_internal_value('12').as_tuple()
expected_digit_tuple = (0, (1, 2, 0, 0), -2)
assert value == expected_digit_tuple
def test_part_precision_string_quantized_value_for_decimal(self):
field = serializers.DecimalField(max_digits=4, decimal_places=2)
value = field.to_internal_value('12.0').as_tuple()
expected_digit_tuple = (0, (1, 2, 0, 0), -2)
assert value == expected_digit_tuple
class TestNoDecimalPlaces(FieldValues):
valid_inputs = {
'0.12345': Decimal('0.12345'),
}
invalid_inputs = {
'0.1234567': ['Ensure that there are no more than 6 digits in total.']
}
outputs = {
'1.2345': '1.2345',
'0': '0',
'1.1': '1.1',
}
field = serializers.DecimalField(max_digits=6, decimal_places=None)
class TestRoundingDecimalField(TestCase):
def test_valid_rounding(self):
field = serializers.DecimalField(max_digits=4, decimal_places=2, rounding=ROUND_UP)
assert field.to_representation(Decimal('1.234')) == '1.24'
field = serializers.DecimalField(max_digits=4, decimal_places=2, rounding=ROUND_DOWN)
assert field.to_representation(Decimal('1.234')) == '1.23'
def test_invalid_rounding(self):
with pytest.raises(AssertionError) as excinfo:
serializers.DecimalField(max_digits=1, decimal_places=1, rounding='ROUND_UNKNOWN')
assert 'Invalid rounding option' in str(excinfo.value)
# Date & time serializers...
class TestDateField(FieldValues):
"""
Valid and invalid values for `DateField`.
"""
valid_inputs = {
'2001-01-01': datetime.date(2001, 1, 1),
datetime.date(2001, 1, 1): datetime.date(2001, 1, 1),
}
invalid_inputs = {
'abc': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.'],
'2001-99-99': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.'],
'2001-01': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.'],
'2001': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.'],
datetime.datetime(2001, 1, 1, 12, 00): ['Expected a date but got a datetime.'],
}
outputs = {
datetime.date(2001, 1, 1): '2001-01-01',
'2001-01-01': '2001-01-01',
str('2016-01-10'): '2016-01-10',
None: None,
'': None,
}
field = serializers.DateField()
class TestCustomInputFormatDateField(FieldValues):
"""
Valid and invalid values for `DateField` with a custom input format.
"""
valid_inputs = {
'1 Jan 2001': datetime.date(2001, 1, 1),
}
invalid_inputs = {
'2001-01-01': ['Date has wrong format. Use one of these formats instead: DD [Jan-Dec] YYYY.']
}
outputs = {}
field = serializers.DateField(input_formats=['%d %b %Y'])
class TestCustomOutputFormatDateField(FieldValues):
"""
Values for `DateField` with a custom output format.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
datetime.date(2001, 1, 1): '01 Jan 2001'
}
field = serializers.DateField(format='%d %b %Y')
class TestNoOutputFormatDateField(FieldValues):
"""
Values for `DateField` with no output format.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
datetime.date(2001, 1, 1): datetime.date(2001, 1, 1)
}
field = serializers.DateField(format=None)
class TestDateTimeField(FieldValues):
"""
Valid and invalid values for `DateTimeField`.
"""
valid_inputs = {
'2001-01-01 13:00': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
'2001-01-01T13:00': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
'2001-01-01T13:00Z': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
datetime.datetime(2001, 1, 1, 13, 00): datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
}
invalid_inputs = {
'abc': ['Datetime has wrong format. Use one of these formats instead: YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].'],
'2001-99-99T99:00': ['Datetime has wrong format. Use one of these formats instead: YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].'],
'2018-08-16 22:00-24:00': ['Datetime has wrong format. Use one of these formats instead: YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].'],
datetime.date(2001, 1, 1): ['Expected a datetime but got a date.'],
'9999-12-31T21:59:59.99990-03:00': ['Datetime value out of range.'],
}
outputs = {
datetime.datetime(2001, 1, 1, 13, 00): '2001-01-01T13:00:00Z',
datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): '2001-01-01T13:00:00Z',
'2001-01-01T00:00:00': '2001-01-01T00:00:00',
str('2016-01-10T00:00:00'): '2016-01-10T00:00:00',
None: None,
'': None,
}
field = serializers.DateTimeField(default_timezone=utc)
class TestCustomInputFormatDateTimeField(FieldValues):
"""
Valid and invalid values for `DateTimeField` with a custom input format.
"""
valid_inputs = {
'1:35pm, 1 Jan 2001': datetime.datetime(2001, 1, 1, 13, 35, tzinfo=utc),
}
invalid_inputs = {
'2001-01-01T20:50': ['Datetime has wrong format. Use one of these formats instead: hh:mm[AM|PM], DD [Jan-Dec] YYYY.']
}
outputs = {}
field = serializers.DateTimeField(default_timezone=utc, input_formats=['%I:%M%p, %d %b %Y'])
class TestCustomOutputFormatDateTimeField(FieldValues):
"""
Values for `DateTimeField` with a custom output format.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
datetime.datetime(2001, 1, 1, 13, 00): '01:00PM, 01 Jan 2001',
}
field = serializers.DateTimeField(format='%I:%M%p, %d %b %Y')
class TestNoOutputFormatDateTimeField(FieldValues):
"""
Values for `DateTimeField` with no output format.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
datetime.datetime(2001, 1, 1, 13, 00): datetime.datetime(2001, 1, 1, 13, 00),
}
field = serializers.DateTimeField(format=None)
class TestNaiveDateTimeField(FieldValues):
"""
Valid and invalid values for `DateTimeField` with naive datetimes.
"""
valid_inputs = {
datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): datetime.datetime(2001, 1, 1, 13, 00),
'2001-01-01 13:00': datetime.datetime(2001, 1, 1, 13, 00),
}
invalid_inputs = {}
outputs = {
datetime.datetime(2001, 1, 1, 13, 00): '2001-01-01T13:00:00',
datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): '2001-01-01T13:00:00',
}
field = serializers.DateTimeField(default_timezone=None)
class TestTZWithDateTimeField(FieldValues):
"""
Valid and invalid values for `DateTimeField` when not using UTC as the timezone.
"""
@classmethod
def setup_class(cls):
# use class setup method, as class-level attribute will still be evaluated even if test is skipped
kolkata = pytz.timezone('Asia/Kolkata')
cls.valid_inputs = {
'2016-12-19T10:00:00': kolkata.localize(datetime.datetime(2016, 12, 19, 10)),
'2016-12-19T10:00:00+05:30': kolkata.localize(datetime.datetime(2016, 12, 19, 10)),
datetime.datetime(2016, 12, 19, 10): kolkata.localize(datetime.datetime(2016, 12, 19, 10)),
}
cls.invalid_inputs = {}
cls.outputs = {
datetime.datetime(2016, 12, 19, 10): '2016-12-19T10:00:00+05:30',
datetime.datetime(2016, 12, 19, 4, 30, tzinfo=utc): '2016-12-19T10:00:00+05:30',
}
cls.field = serializers.DateTimeField(default_timezone=kolkata)
@override_settings(TIME_ZONE='UTC', USE_TZ=True)
class TestDefaultTZDateTimeField(TestCase):
"""
Test the current/default timezone handling in `DateTimeField`.
"""
@classmethod
def setup_class(cls):
cls.field = serializers.DateTimeField()
cls.kolkata = pytz.timezone('Asia/Kolkata')
def assertUTC(self, tzinfo):
"""
Check UTC for datetime.timezone, ZoneInfo, and pytz tzinfo instances.
"""
assert (
tzinfo is utc or
(getattr(tzinfo, "key", None) or getattr(tzinfo, "zone", None)) == "UTC"
)
def test_default_timezone(self):
self.assertUTC(self.field.default_timezone())
def test_current_timezone(self):
self.assertUTC(self.field.default_timezone())
activate(self.kolkata)
assert self.field.default_timezone() == self.kolkata
deactivate()
self.assertUTC(self.field.default_timezone())
@pytest.mark.skipif(pytz is None, reason='pytz not installed')
@override_settings(TIME_ZONE='UTC', USE_TZ=True)
class TestCustomTimezoneForDateTimeField(TestCase):
@classmethod
def setup_class(cls):
cls.kolkata = pytz.timezone('Asia/Kolkata')
cls.date_format = '%d/%m/%Y %H:%M'
def test_should_render_date_time_in_default_timezone(self):
field = serializers.DateTimeField(default_timezone=self.kolkata, format=self.date_format)
dt = datetime.datetime(2018, 2, 8, 14, 15, 16, tzinfo=pytz.utc)
with override(self.kolkata):
rendered_date = field.to_representation(dt)
rendered_date_in_timezone = dt.astimezone(self.kolkata).strftime(self.date_format)
assert rendered_date == rendered_date_in_timezone
class TestNaiveDayLightSavingTimeTimeZoneDateTimeField(FieldValues):
"""
Invalid values for `DateTimeField` with datetime in DST shift (non-existing or ambiguous) and timezone with DST.
Timezone America/New_York has DST shift from 2017-03-12T02:00:00 to 2017-03-12T03:00:00 and
from 2017-11-05T02:00:00 to 2017-11-05T01:00:00 in 2017.
"""
valid_inputs = {}
invalid_inputs = {
'2017-03-12T02:30:00': ['Invalid datetime for the timezone "America/New_York".'],
'2017-11-05T01:30:00': ['Invalid datetime for the timezone "America/New_York".']
}
outputs = {}
class MockTimezone(pytz.BaseTzInfo):
@staticmethod
def localize(value, is_dst):
raise pytz.InvalidTimeError()
def __str__(self):
return 'America/New_York'
field = serializers.DateTimeField(default_timezone=MockTimezone())
class TestTimeField(FieldValues):
"""
Valid and invalid values for `TimeField`.
"""
valid_inputs = {
'13:00': datetime.time(13, 00),
datetime.time(13, 00): datetime.time(13, 00),
}
invalid_inputs = {
'abc': ['Time has wrong format. Use one of these formats instead: hh:mm[:ss[.uuuuuu]].'],
'99:99': ['Time has wrong format. Use one of these formats instead: hh:mm[:ss[.uuuuuu]].'],
}
outputs = {
datetime.time(13, 0): '13:00:00',
datetime.time(0, 0): '00:00:00',
'00:00:00': '00:00:00',
None: None,
'': None,
}
field = serializers.TimeField()
class TestCustomInputFormatTimeField(FieldValues):
"""
Valid and invalid values for `TimeField` with a custom input format.
"""
valid_inputs = {
'1:00pm': datetime.time(13, 00),
}
invalid_inputs = {
'13:00': ['Time has wrong format. Use one of these formats instead: hh:mm[AM|PM].'],
}
outputs = {}
field = serializers.TimeField(input_formats=['%I:%M%p'])
class TestCustomOutputFormatTimeField(FieldValues):
"""
Values for `TimeField` with a custom output format.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
datetime.time(13, 00): '01:00PM'
}
field = serializers.TimeField(format='%I:%M%p')
class TestNoOutputFormatTimeField(FieldValues):
"""
Values for `TimeField` with a no output format.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = {
datetime.time(13, 00): datetime.time(13, 00)
}
field = serializers.TimeField(format=None)
class TestMinMaxDurationField(FieldValues):
"""
Valid and invalid values for `DurationField` with min and max limits.
"""
valid_inputs = {
'3 08:32:01.000123': datetime.timedelta(days=3, hours=8, minutes=32, seconds=1, microseconds=123),
86401: datetime.timedelta(days=1, seconds=1),
}
invalid_inputs = {
3600: ['Ensure this value is greater than or equal to 1 day, 0:00:00.'],
'4 08:32:01.000123': ['Ensure this value is less than or equal to 4 days, 0:00:00.'],
'3600': ['Ensure this value is greater than or equal to 1 day, 0:00:00.'],
}
outputs = {}
field = serializers.DurationField(min_value=datetime.timedelta(days=1), max_value=datetime.timedelta(days=4))
class TestDurationField(FieldValues):
"""
Valid and invalid values for `DurationField`.
"""
valid_inputs = {
'13': datetime.timedelta(seconds=13),
'3 08:32:01.000123': datetime.timedelta(days=3, hours=8, minutes=32, seconds=1, microseconds=123),
'08:01': datetime.timedelta(minutes=8, seconds=1),
datetime.timedelta(days=3, hours=8, minutes=32, seconds=1, microseconds=123): datetime.timedelta(days=3, hours=8, minutes=32, seconds=1, microseconds=123),
3600: datetime.timedelta(hours=1),
}
invalid_inputs = {
'abc': ['Duration has wrong format. Use one of these formats instead: [DD] [HH:[MM:]]ss[.uuuuuu].'],
'3 08:32 01.123': ['Duration has wrong format. Use one of these formats instead: [DD] [HH:[MM:]]ss[.uuuuuu].'],
}
outputs = {
datetime.timedelta(days=3, hours=8, minutes=32, seconds=1, microseconds=123): '3 08:32:01.000123',
}
field = serializers.DurationField()
# Choice types...
class TestChoiceField(FieldValues):
"""
Valid and invalid values for `ChoiceField`.
"""
valid_inputs = {
'poor': 'poor',
'medium': 'medium',
'good': 'good',
}
invalid_inputs = {
'amazing': ['"amazing" is not a valid choice.']
}
outputs = {
'good': 'good',
'': '',
'amazing': 'amazing',
}
field = serializers.ChoiceField(
choices=[
('poor', 'Poor quality'),
('medium', 'Medium quality'),
('good', 'Good quality'),
]
)
def test_allow_blank(self):
"""
If `allow_blank=True` then '' is a valid input.
"""
field = serializers.ChoiceField(
allow_blank=True,
choices=[
('poor', 'Poor quality'),
('medium', 'Medium quality'),
('good', 'Good quality'),
]
)
output = field.run_validation('')
assert output == ''
def test_allow_null(self):
"""
If `allow_null=True` then '' on HTML forms is treated as None.
"""
field = serializers.ChoiceField(
allow_null=True,
choices=[
1, 2, 3
]
)
field.field_name = 'example'
value = field.get_value(QueryDict('example='))
assert value is None
output = field.run_validation(None)
assert output is None
def test_iter_options(self):
"""
iter_options() should return a list of options and option groups.
"""
field = serializers.ChoiceField(
choices=[
('Numbers', ['integer', 'float']),
('Strings', ['text', 'email', 'url']),
'boolean'
]
)
items = list(field.iter_options())
assert items[0].start_option_group
assert items[0].label == 'Numbers'
assert items[1].value == 'integer'
assert items[2].value == 'float'
assert items[3].end_option_group
assert items[4].start_option_group
assert items[4].label == 'Strings'
assert items[5].value == 'text'
assert items[6].value == 'email'
assert items[7].value == 'url'
assert items[8].end_option_group
assert items[9].value == 'boolean'
def test_edit_choices(self):
field = serializers.ChoiceField(
allow_null=True,
choices=[
1, 2,
]
)
field.choices = [1]
assert field.run_validation(1) == 1
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation(2)
assert exc_info.value.detail == ['"2" is not a valid choice.']
class TestChoiceFieldWithType(FieldValues):
"""
Valid and invalid values for a `Choice` field that uses an integer type,
instead of a char type.
"""
valid_inputs = {
'1': 1,
3: 3,
}
invalid_inputs = {
5: ['"5" is not a valid choice.'],
'abc': ['"abc" is not a valid choice.']
}
outputs = {
'1': 1,
1: 1
}
field = serializers.ChoiceField(
choices=[
(1, 'Poor quality'),
(2, 'Medium quality'),
(3, 'Good quality'),
]
)
class TestChoiceFieldWithListChoices(FieldValues):
"""
Valid and invalid values for a `Choice` field that uses a flat list for the
choices, rather than a list of pairs of (`value`, `description`).
"""
valid_inputs = {
'poor': 'poor',
'medium': 'medium',
'good': 'good',
}
invalid_inputs = {
'awful': ['"awful" is not a valid choice.']
}
outputs = {
'good': 'good'
}
field = serializers.ChoiceField(choices=('poor', 'medium', 'good'))
class TestChoiceFieldWithGroupedChoices(FieldValues):
"""
Valid and invalid values for a `Choice` field that uses a grouped list for the
choices, rather than a list of pairs of (`value`, `description`).
"""
valid_inputs = {
'poor': 'poor',
'medium': 'medium',
'good': 'good',
}
invalid_inputs = {
'awful': ['"awful" is not a valid choice.']
}
outputs = {
'good': 'good'
}
field = serializers.ChoiceField(
choices=[
(
'Category',
(
('poor', 'Poor quality'),
('medium', 'Medium quality'),
),
),
('good', 'Good quality'),
]
)
class TestChoiceFieldWithMixedChoices(FieldValues):
"""
Valid and invalid values for a `Choice` field that uses a single paired or
grouped.
"""
valid_inputs = {
'poor': 'poor',
'medium': 'medium',
'good': 'good',
}
invalid_inputs = {
'awful': ['"awful" is not a valid choice.']
}
outputs = {
'good': 'good'
}
field = serializers.ChoiceField(
choices=[
(
'Category',
(
('poor', 'Poor quality'),
),
),
'medium',
('good', 'Good quality'),
]
)
class TestMultipleChoiceField(FieldValues):
"""
Valid and invalid values for `MultipleChoiceField`.
"""
valid_inputs = {
(): set(),
('aircon',): {'aircon'},
('aircon', 'manual'): {'aircon', 'manual'},
}
invalid_inputs = {
'abc': ['Expected a list of items but got type "str".'],
('aircon', 'incorrect'): ['"incorrect" is not a valid choice.']
}
outputs = [
(['aircon', 'manual', 'incorrect'], {'aircon', 'manual', 'incorrect'})
]
field = serializers.MultipleChoiceField(
choices=[
('aircon', 'AirCon'),
('manual', 'Manual drive'),
('diesel', 'Diesel'),
]
)
def test_against_partial_and_full_updates(self):
field = serializers.MultipleChoiceField(choices=(('a', 'a'), ('b', 'b')))
field.partial = False
assert field.get_value(QueryDict({})) == []
field.partial = True
assert field.get_value(QueryDict({})) == rest_framework.fields.empty
class TestEmptyMultipleChoiceField(FieldValues):
"""
Invalid values for `MultipleChoiceField(allow_empty=False)`.
"""
valid_inputs = {
}
invalid_inputs = (
([], ['This selection may not be empty.']),
)
outputs = [
]
field = serializers.MultipleChoiceField(
choices=[
('consistency', 'Consistency'),
('availability', 'Availability'),
('partition', 'Partition tolerance'),
],
allow_empty=False
)
# File serializers...
class MockFile:
def __init__(self, name='', size=0, url=''):
self.name = name
self.size = size
self.url = url
def __eq__(self, other):
return (
isinstance(other, MockFile) and
self.name == other.name and
self.size == other.size and
self.url == other.url
)
class TestFileField(FieldValues):
"""
Values for `FileField`.
"""
valid_inputs = [
(MockFile(name='example', size=10), MockFile(name='example', size=10))
]
invalid_inputs = [
('invalid', ['The submitted data was not a file. Check the encoding type on the form.']),
(MockFile(name='example.txt', size=0), ['The submitted file is empty.']),
(MockFile(name='', size=10), ['No filename could be determined.']),
(MockFile(name='x' * 100, size=10), ['Ensure this filename has at most 10 characters (it has 100).'])
]
outputs = [
(MockFile(name='example.txt', url='/example.txt'), '/example.txt'),
('', None)
]
field = serializers.FileField(max_length=10)
class TestFieldFieldWithName(FieldValues):
"""
Values for `FileField` with a filename output instead of URLs.
"""
valid_inputs = {}
invalid_inputs = {}
outputs = [
(MockFile(name='example.txt', url='/example.txt'), 'example.txt')
]
field = serializers.FileField(use_url=False)
def ext_validator(value):
if not value.name.endswith('.png'):
raise serializers.ValidationError('File extension is not allowed. Allowed extensions is png.')
# Stub out mock Django `forms.ImageField` class so we don't *actually*
# call into it's regular validation, or require PIL for testing.
class PassImageValidation(DjangoImageField):
default_validators = [ext_validator]
def to_python(self, value):
return value
class FailImageValidation(PassImageValidation):
def to_python(self, value):
if value.name == 'badimage.png':
raise serializers.ValidationError(self.error_messages['invalid_image'])
return value
class TestInvalidImageField(FieldValues):
"""
Values for an invalid `ImageField`.
"""
valid_inputs = {}
invalid_inputs = [
(MockFile(name='badimage.png', size=10), ['Upload a valid image. The file you uploaded was either not an image or a corrupted image.']),
(MockFile(name='goodimage.html', size=10), ['File extension is not allowed. Allowed extensions is png.'])
]
outputs = {}
field = serializers.ImageField(_DjangoImageField=FailImageValidation)
class TestValidImageField(FieldValues):
"""
Values for an valid `ImageField`.
"""
valid_inputs = [
(MockFile(name='example.png', size=10), MockFile(name='example.png', size=10))
]
invalid_inputs = {}
outputs = {}
field = serializers.ImageField(_DjangoImageField=PassImageValidation)
# Composite serializers...
class TestListField(FieldValues):
"""
Values for `ListField` with IntegerField as child.
"""
valid_inputs = [
([1, 2, 3], [1, 2, 3]),
(['1', '2', '3'], [1, 2, 3]),
([], [])
]
invalid_inputs = [
('not a list', ['Expected a list of items but got type "str".']),
([1, 2, 'error', 'error'], {2: ['A valid integer is required.'], 3: ['A valid integer is required.']}),
({'one': 'two'}, ['Expected a list of items but got type "dict".'])
]
outputs = [
([1, 2, 3], [1, 2, 3]),
(['1', '2', '3'], [1, 2, 3])
]
field = serializers.ListField(child=serializers.IntegerField())
def test_no_source_on_child(self):
with pytest.raises(AssertionError) as exc_info:
serializers.ListField(child=serializers.IntegerField(source='other'))
assert str(exc_info.value) == (
"The `source` argument is not meaningful when applied to a `child=` field. "
"Remove `source=` from the field declaration."
)
def test_collection_types_are_invalid_input(self):
field = serializers.ListField(child=serializers.CharField())
input_value = ({'one': 'two'})
with pytest.raises(serializers.ValidationError) as exc_info:
field.to_internal_value(input_value)
assert exc_info.value.detail == ['Expected a list of items but got type "dict".']
def test_constructor_misuse_raises(self):
# Test that `ListField` can only be instantiated with keyword arguments
with pytest.raises(TypeError):
serializers.ListField(serializers.CharField())
class TestNestedListField(FieldValues):
"""
Values for nested `ListField` with IntegerField as child.
"""
valid_inputs = [
([[1, 2], [3]], [[1, 2], [3]]),
([[]], [[]])
]
invalid_inputs = [
(['not a list'], {0: ['Expected a list of items but got type "str".']}),
([[1, 2, 'error'], ['error']], {0: {2: ['A valid integer is required.']}, 1: {0: ['A valid integer is required.']}}),
([{'one': 'two'}], {0: ['Expected a list of items but got type "dict".']})
]
outputs = [
([[1, 2], [3]], [[1, 2], [3]]),
]
field = serializers.ListField(child=serializers.ListField(child=serializers.IntegerField()))
class TestEmptyListField(FieldValues):
"""
Values for `ListField` with allow_empty=False flag.
"""
valid_inputs = {}
invalid_inputs = [
([], ['This list may not be empty.'])
]
outputs = {}
field = serializers.ListField(child=serializers.IntegerField(), allow_empty=False)
class TestListFieldLengthLimit(FieldValues):
valid_inputs = ()
invalid_inputs = [
((0, 1), ['Ensure this field has at least 3 elements.']),
((0, 1, 2, 3, 4, 5), ['Ensure this field has no more than 4 elements.']),
]
outputs = ()
field = serializers.ListField(child=serializers.IntegerField(), min_length=3, max_length=4)
class TestUnvalidatedListField(FieldValues):
"""
Values for `ListField` with no `child` argument.
"""
valid_inputs = [
([1, '2', True, [4, 5, 6]], [1, '2', True, [4, 5, 6]]),
]
invalid_inputs = [
('not a list', ['Expected a list of items but got type "str".']),
]
outputs = [
([1, '2', True, [4, 5, 6]], [1, '2', True, [4, 5, 6]]),
]
field = serializers.ListField()
class TestDictField(FieldValues):
"""
Values for `DictField` with CharField as child.
"""
valid_inputs = [
({'a': 1, 'b': '2', 3: 3}, {'a': '1', 'b': '2', '3': '3'}),
({}, {}),
]
invalid_inputs = [
({'a': 1, 'b': None, 'c': None}, {'b': ['This field may not be null.'], 'c': ['This field may not be null.']}),
('not a dict', ['Expected a dictionary of items but got type "str".']),
]
outputs = [
({'a': 1, 'b': '2', 3: 3}, {'a': '1', 'b': '2', '3': '3'}),
]
field = serializers.DictField(child=serializers.CharField())
def test_no_source_on_child(self):
with pytest.raises(AssertionError) as exc_info:
serializers.DictField(child=serializers.CharField(source='other'))
assert str(exc_info.value) == (
"The `source` argument is not meaningful when applied to a `child=` field. "
"Remove `source=` from the field declaration."
)
def test_allow_null(self):
"""
If `allow_null=True` then `None` is a valid input.
"""
field = serializers.DictField(allow_null=True)
output = field.run_validation(None)
assert output is None
def test_allow_empty_disallowed(self):
"""
If allow_empty is False then an empty dict is not a valid input.
"""
field = serializers.DictField(allow_empty=False)
with pytest.raises(serializers.ValidationError) as exc_info:
field.run_validation({})
assert exc_info.value.detail == ['This dictionary may not be empty.']
class TestNestedDictField(FieldValues):
"""
Values for nested `DictField` with CharField as child.
"""
valid_inputs = [
({0: {'a': 1, 'b': '2'}, 1: {3: 3}}, {'0': {'a': '1', 'b': '2'}, '1': {'3': '3'}}),
]
invalid_inputs = [
({0: {'a': 1, 'b': None}, 1: {'c': None}}, {'0': {'b': ['This field may not be null.']}, '1': {'c': ['This field may not be null.']}}),
({0: 'not a dict'}, {'0': ['Expected a dictionary of items but got type "str".']}),
]
outputs = [
({0: {'a': 1, 'b': '2'}, 1: {3: 3}}, {'0': {'a': '1', 'b': '2'}, '1': {'3': '3'}}),
]
field = serializers.DictField(child=serializers.DictField(child=serializers.CharField()))
class TestDictFieldWithNullChild(FieldValues):
"""
Values for `DictField` with allow_null CharField as child.
"""
valid_inputs = [
({'a': None, 'b': '2', 3: 3}, {'a': None, 'b': '2', '3': '3'}),
]
invalid_inputs = [
]
outputs = [
({'a': None, 'b': '2', 3: 3}, {'a': None, 'b': '2', '3': '3'}),
]
field = serializers.DictField(child=serializers.CharField(allow_null=True))
class TestUnvalidatedDictField(FieldValues):
"""
Values for `DictField` with no `child` argument.
"""
valid_inputs = [
({'a': 1, 'b': [4, 5, 6], 1: 123}, {'a': 1, 'b': [4, 5, 6], '1': 123}),
]
invalid_inputs = [
('not a dict', ['Expected a dictionary of items but got type "str".']),
]
outputs = [
({'a': 1, 'b': [4, 5, 6]}, {'a': 1, 'b': [4, 5, 6]}),
]
field = serializers.DictField()
class TestHStoreField(FieldValues):
"""
Values for `ListField` with CharField as child.
"""
valid_inputs = [
({'a': 1, 'b': '2', 3: 3}, {'a': '1', 'b': '2', '3': '3'}),
({'a': 1, 'b': None}, {'a': '1', 'b': None}),
]
invalid_inputs = [
('not a dict', ['Expected a dictionary of items but got type "str".']),
]
outputs = [
({'a': 1, 'b': '2', 3: 3}, {'a': '1', 'b': '2', '3': '3'}),
]
field = serializers.HStoreField()
def test_child_is_charfield(self):
with pytest.raises(AssertionError) as exc_info:
serializers.HStoreField(child=serializers.IntegerField())
assert str(exc_info.value) == (
"The `child` argument must be an instance of `CharField`, "
"as the hstore extension stores values as strings."
)
def test_no_source_on_child(self):
with pytest.raises(AssertionError) as exc_info:
serializers.HStoreField(child=serializers.CharField(source='other'))
assert str(exc_info.value) == (
"The `source` argument is not meaningful when applied to a `child=` field. "
"Remove `source=` from the field declaration."
)
def test_allow_null(self):
"""
If `allow_null=True` then `None` is a valid input.
"""
field = serializers.HStoreField(allow_null=True)
output = field.run_validation(None)
assert output is None
class TestJSONField(FieldValues):
"""
Values for `JSONField`.
"""
valid_inputs = [
({
'a': 1,
'b': ['some', 'list', True, 1.23],
'3': None
}, {
'a': 1,
'b': ['some', 'list', True, 1.23],
'3': None
}),
]
invalid_inputs = [
({'a': set()}, ['Value must be valid JSON.']),
({'a': float('inf')}, ['Value must be valid JSON.']),
]
outputs = [
({
'a': 1,
'b': ['some', 'list', True, 1.23],
'3': 3
}, {
'a': 1,
'b': ['some', 'list', True, 1.23],
'3': 3
}),
]
field = serializers.JSONField()
def test_html_input_as_json_string(self):
"""
HTML inputs should be treated as a serialized JSON string.
"""
class TestSerializer(serializers.Serializer):
config = serializers.JSONField()
data = QueryDict(mutable=True)
data.update({'config': '{"a":1}'})
serializer = TestSerializer(data=data)
assert serializer.is_valid()
assert serializer.validated_data == {'config': {"a": 1}}
class TestBinaryJSONField(FieldValues):
"""
Values for `JSONField` with binary=True.
"""
valid_inputs = [
(b'{"a": 1, "3": null, "b": ["some", "list", true, 1.23]}', {
'a': 1,
'b': ['some', 'list', True, 1.23],
'3': None
}),
]
invalid_inputs = [
('{"a": "unterminated string}', ['Value must be valid JSON.']),
]
outputs = [
(['some', 'list', True, 1.23], b'["some", "list", true, 1.23]'),
]
field = serializers.JSONField(binary=True)
# Tests for FileField.
# --------------------
class MockRequest:
def build_absolute_uri(self, value):
return 'http://example.com' + value
class TestFileFieldContext:
def test_fully_qualified_when_request_in_context(self):
field = serializers.FileField(max_length=10)
field._context = {'request': MockRequest()}
obj = MockFile(name='example.txt', url='/example.txt')
value = field.to_representation(obj)
assert value == 'http://example.com/example.txt'
# Tests for SerializerMethodField.
# --------------------------------
class TestSerializerMethodField:
def test_serializer_method_field(self):
class ExampleSerializer(serializers.Serializer):
example_field = serializers.SerializerMethodField()
def get_example_field(self, obj):
return 'ran get_example_field(%d)' % obj['example_field']
serializer = ExampleSerializer({'example_field': 123})
assert serializer.data == {
'example_field': 'ran get_example_field(123)'
}
def test_redundant_method_name(self):
# Prior to v3.10, redundant method names were not allowed.
# This restriction has since been removed.
class ExampleSerializer(serializers.Serializer):
example_field = serializers.SerializerMethodField('get_example_field')
field = ExampleSerializer().fields['example_field']
assert field.method_name == 'get_example_field'
# Tests for ModelField.
# ---------------------
class TestModelField:
def test_max_length_init(self):
field = serializers.ModelField(None)
assert len(field.validators) == 0
field = serializers.ModelField(None, max_length=10)
assert len(field.validators) == 1
# Tests for validation errors
# ---------------------------
class TestValidationErrorCode:
@pytest.mark.parametrize('use_list', (False, True))
def test_validationerror_code_with_msg(self, use_list):
class ExampleSerializer(serializers.Serializer):
password = serializers.CharField()
def validate_password(self, obj):
err = DjangoValidationError(
'exc_msg %s', code='exc_code', params=('exc_param',),
)
if use_list:
err = DjangoValidationError([err])
raise err
serializer = ExampleSerializer(data={'password': 123})
serializer.is_valid()
assert serializer.errors == {'password': ['exc_msg exc_param']}
assert serializer.errors['password'][0].code == 'exc_code'
@pytest.mark.parametrize('use_list', (False, True))
def test_validationerror_code_with_msg_including_percent(self, use_list):
class ExampleSerializer(serializers.Serializer):
password = serializers.CharField()
def validate_password(self, obj):
err = DjangoValidationError('exc_msg with %', code='exc_code')
if use_list:
err = DjangoValidationError([err])
raise err
serializer = ExampleSerializer(data={'password': 123})
serializer.is_valid()
assert serializer.errors == {'password': ['exc_msg with %']}
assert serializer.errors['password'][0].code == 'exc_code'
@pytest.mark.parametrize('code', (None, 'exc_code',))
@pytest.mark.parametrize('use_list', (False, True))
def test_validationerror_code_with_dict(self, use_list, code):
class ExampleSerializer(serializers.Serializer):
def validate(self, obj):
if code is None:
err = DjangoValidationError({
'email': 'email error',
})
else:
err = DjangoValidationError({
'email': DjangoValidationError(
'email error',
code=code),
})
if use_list:
err = DjangoValidationError([err])
raise err
serializer = ExampleSerializer(data={})
serializer.is_valid()
expected_code = code if code else 'invalid'
if use_list:
assert serializer.errors == {
'non_field_errors': [
exceptions.ErrorDetail(
string='email error',
code=expected_code
)
]
}
else:
assert serializer.errors == {
'email': ['email error'],
}
assert serializer.errors['email'][0].code == expected_code
@pytest.mark.parametrize('code', (None, 'exc_code',))
def test_validationerror_code_with_dict_list_same_code(self, code):
class ExampleSerializer(serializers.Serializer):
def validate(self, obj):
if code is None:
raise DjangoValidationError({'email': ['email error 1',
'email error 2']})
raise DjangoValidationError({'email': [
DjangoValidationError('email error 1', code=code),
DjangoValidationError('email error 2', code=code),
]})
serializer = ExampleSerializer(data={})
serializer.is_valid()
expected_code = code if code else 'invalid'
assert serializer.errors == {
'email': [
exceptions.ErrorDetail(
string='email error 1',
code=expected_code
),
exceptions.ErrorDetail(
string='email error 2',
code=expected_code
),
]
}
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