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test_filterset.py
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test_filterset.py
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import unittest
from unittest import mock
from django.db import models
from django.test import TestCase, override_settings
from django.utils.datastructures import MultiValueDict
from django_filters.exceptions import FieldLookupError
from django_filters.filters import (
BaseInFilter,
BaseRangeFilter,
BooleanFilter,
CharFilter,
ChoiceFilter,
DateRangeFilter,
Filter,
FilterMethod,
ModelChoiceFilter,
ModelMultipleChoiceFilter,
NumberFilter,
UUIDFilter,
)
from django_filters.filterset import (
FILTER_FOR_DBFIELD_DEFAULTS,
FilterSet,
filterset_factory,
)
from django_filters.widgets import BooleanWidget
from .models import (
Account,
AdminUser,
Article,
BankAccount,
Book,
Business,
Comment,
DirectedNode,
NetworkSetting,
Node,
Profile,
Restaurant,
SubnetMaskField,
User,
UUIDTestModel,
Worker,
)
from .utils import MockQuerySet
class HelperMethodsTests(TestCase):
@unittest.skip("todo")
def test_get_declared_filters(self):
pass
@unittest.skip("todo")
def test_filters_for_model(self):
pass
class DbFieldDefaultFiltersTests(TestCase):
def test_expected_db_fields_get_filters(self):
to_check = [
models.BooleanField,
models.CharField,
models.CommaSeparatedIntegerField,
models.DateField,
models.DateTimeField,
models.DecimalField,
models.EmailField,
models.FilePathField,
models.FloatField,
models.IntegerField,
models.GenericIPAddressField,
models.NullBooleanField,
models.PositiveIntegerField,
models.PositiveSmallIntegerField,
models.SlugField,
models.SmallIntegerField,
models.TextField,
models.TimeField,
models.DurationField,
models.URLField,
models.ForeignKey,
models.OneToOneField,
models.ManyToManyField,
models.UUIDField,
]
msg = "%s expected to be found in FILTER_FOR_DBFIELD_DEFAULTS"
for m in to_check:
self.assertIn(m, FILTER_FOR_DBFIELD_DEFAULTS, msg % m.__name__)
def test_expected_db_fields_do_not_get_filters(self):
to_check = [
models.Field,
models.BigIntegerField,
models.FileField,
models.ImageField,
]
msg = "%s expected to not be found in FILTER_FOR_DBFIELD_DEFAULTS"
for m in to_check:
self.assertNotIn(m, FILTER_FOR_DBFIELD_DEFAULTS, msg % m.__name__)
class FilterSetFilterForFieldTests(TestCase):
def test_filter_found_for_field(self):
f = User._meta.get_field("username")
result = FilterSet.filter_for_field(f, "username")
self.assertIsInstance(result, CharFilter)
self.assertEqual(result.field_name, "username")
def test_filter_found_for_uuidfield(self):
f = UUIDTestModel._meta.get_field("uuid")
result = FilterSet.filter_for_field(f, "uuid")
self.assertIsInstance(result, UUIDFilter)
self.assertEqual(result.field_name, "uuid")
def test_filter_found_for_autofield(self):
f = User._meta.get_field("id")
result = FilterSet.filter_for_field(f, "id")
self.assertIsInstance(result, NumberFilter)
self.assertEqual(result.field_name, "id")
def test_field_with_extras(self):
f = User._meta.get_field("favorite_books")
result = FilterSet.filter_for_field(f, "favorite_books")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "favorite_books")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, Book)
def test_field_with_choices(self):
f = User._meta.get_field("status")
result = FilterSet.filter_for_field(f, "status")
self.assertIsInstance(result, ChoiceFilter)
self.assertEqual(result.field_name, "status")
self.assertTrue("choices" in result.extra)
self.assertIsNotNone(result.extra["choices"])
def test_field_that_is_subclassed(self):
f = User._meta.get_field("first_name")
result = FilterSet.filter_for_field(f, "first_name")
self.assertIsInstance(result, CharFilter)
def test_unknown_field_type_error(self):
f = NetworkSetting._meta.get_field("mask")
with self.assertRaises(AssertionError) as excinfo:
FilterSet.filter_for_field(f, "mask")
self.assertIn(
"FilterSet resolved field 'mask' with 'exact' lookup "
"to an unrecognized field type SubnetMaskField",
excinfo.exception.args[0],
)
def test_symmetrical_selfref_m2m_field(self):
f = Node._meta.get_field("adjacents")
result = FilterSet.filter_for_field(f, "adjacents")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "adjacents")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, Node)
def test_non_symmetrical_selfref_m2m_field(self):
f = DirectedNode._meta.get_field("outbound_nodes")
result = FilterSet.filter_for_field(f, "outbound_nodes")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "outbound_nodes")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, DirectedNode)
def test_m2m_field_with_through_model(self):
f = Business._meta.get_field("employees")
result = FilterSet.filter_for_field(f, "employees")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "employees")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, Worker)
def test_transformed_lookup_expr(self):
f = Comment._meta.get_field("date")
result = FilterSet.filter_for_field(f, "date", "year__gte")
self.assertIsInstance(result, NumberFilter)
self.assertEqual(result.field_name, "date")
@override_settings(FILTERS_DEFAULT_LOOKUP_EXPR="icontains")
def test_modified_default_lookup(self):
f = User._meta.get_field("username")
result = FilterSet.filter_for_field(f, "username")
self.assertIsInstance(result, CharFilter)
self.assertEqual(result.lookup_expr, "icontains")
@unittest.skip("todo")
def test_filter_overrides(self):
pass
class FilterSetFilterForLookupTests(TestCase):
def test_filter_for_ISNULL_lookup(self):
f = Article._meta.get_field("author")
result, params = FilterSet.filter_for_lookup(f, "isnull")
self.assertEqual(result, BooleanFilter)
self.assertDictEqual(params, {})
def test_filter_for_IN_lookup(self):
f = Article._meta.get_field("author")
result, params = FilterSet.filter_for_lookup(f, "in")
self.assertTrue(issubclass(result, ModelChoiceFilter))
self.assertTrue(issubclass(result, BaseInFilter))
self.assertEqual(params["to_field_name"], "id")
def test_filter_for_RANGE_lookup(self):
f = Article._meta.get_field("author")
result, params = FilterSet.filter_for_lookup(f, "range")
self.assertTrue(issubclass(result, ModelChoiceFilter))
self.assertTrue(issubclass(result, BaseRangeFilter))
self.assertEqual(params["to_field_name"], "id")
def test_isnull_with_filter_overrides(self):
class OFilterSet(FilterSet):
class Meta:
filter_overrides = {
models.BooleanField: {
"filter_class": BooleanFilter,
"extra": lambda f: {
"widget": BooleanWidget,
},
},
}
f = Article._meta.get_field("author")
result, params = OFilterSet.filter_for_lookup(f, "isnull")
self.assertEqual(result, BooleanFilter)
self.assertEqual(params["widget"], BooleanWidget)
class ReverseFilterSetFilterForFieldTests(TestCase):
# Test reverse relationships for `filter_for_field`
def test_reverse_o2o_relationship(self):
f = Account._meta.get_field("profile")
result = FilterSet.filter_for_field(f, "profile")
self.assertIsInstance(result, ModelChoiceFilter)
self.assertEqual(result.field_name, "profile")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, Profile)
def test_reverse_fk_relationship(self):
f = User._meta.get_field("comments")
result = FilterSet.filter_for_field(f, "comments")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "comments")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, Comment)
def test_reverse_m2m_relationship(self):
f = Book._meta.get_field("lovers")
result = FilterSet.filter_for_field(f, "lovers")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "lovers")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, User)
def test_reverse_non_symmetrical_selfref_m2m_field(self):
f = DirectedNode._meta.get_field("inbound_nodes")
result = FilterSet.filter_for_field(f, "inbound_nodes")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "inbound_nodes")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, DirectedNode)
def test_reverse_m2m_field_with_through_model(self):
f = Worker._meta.get_field("employers")
result = FilterSet.filter_for_field(f, "employers")
self.assertIsInstance(result, ModelMultipleChoiceFilter)
self.assertEqual(result.field_name, "employers")
self.assertTrue("queryset" in result.extra)
self.assertIsNotNone(result.extra["queryset"])
self.assertEqual(result.extra["queryset"].model, Business)
def test_reverse_relationship_lookup_expr(self):
f = Book._meta.get_field("lovers")
result = FilterSet.filter_for_field(f, "lovers", "isnull")
self.assertIsInstance(result, BooleanFilter)
self.assertEqual(result.field_name, "lovers")
self.assertEqual(result.lookup_expr, "isnull")
class FilterSetClassCreationTests(TestCase):
def test_no_filters(self):
class F(FilterSet):
pass
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 0)
def test_declaring_filter(self):
class F(FilterSet):
username = CharFilter()
self.assertEqual(len(F.declared_filters), 1)
self.assertListEqual(list(F.declared_filters), ["username"])
self.assertEqual(len(F.base_filters), 1)
self.assertListEqual(list(F.base_filters), ["username"])
@override_settings(FILTERS_DEFAULT_LOOKUP_EXPR="icontains")
def test_declaring_filter_other_default_lookup(self):
class F(FilterSet):
username = CharFilter()
self.assertEqual(F.base_filters["username"].lookup_expr, "icontains")
def test_model_derived(self):
class F(FilterSet):
class Meta:
model = Book
fields = "__all__"
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 3)
self.assertListEqual(list(F.base_filters), ["title", "price", "average_rating"])
@override_settings(FILTERS_DEFAULT_LOOKUP_EXPR="icontains")
def test_model_derived_other_default_lookup(self):
class F(FilterSet):
class Meta:
model = Book
fields = "__all__"
for filter_ in F.base_filters.values():
self.assertEqual(filter_.lookup_expr, "icontains")
def test_model_no_fields_or_exclude(self):
with self.assertRaises(AssertionError) as excinfo:
class F(FilterSet):
class Meta:
model = Book
self.assertIn(
"Setting 'Meta.model' without either 'Meta.fields' or 'Meta.exclude'",
str(excinfo.exception),
)
def test_model_fields_empty(self):
class F(FilterSet):
class Meta:
model = Book
fields = []
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 0)
self.assertListEqual(list(F.base_filters), [])
def test_model_exclude_empty(self):
# equivalent to fields = '__all__'
class F(FilterSet):
class Meta:
model = Book
exclude = []
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 3)
self.assertListEqual(list(F.base_filters), ["title", "price", "average_rating"])
def test_declared_and_model_derived(self):
class F(FilterSet):
username = CharFilter()
class Meta:
model = Book
fields = "__all__"
self.assertEqual(len(F.declared_filters), 1)
self.assertEqual(len(F.base_filters), 4)
self.assertListEqual(
list(F.base_filters), ["title", "price", "average_rating", "username"]
)
def test_meta_fields_with_declared_and_model_derived(self):
class F(FilterSet):
username = CharFilter()
class Meta:
model = Book
fields = ("username", "price")
self.assertEqual(len(F.declared_filters), 1)
self.assertEqual(len(F.base_filters), 2)
self.assertListEqual(list(F.base_filters), ["username", "price"])
def test_meta_fields_dictionary_derived(self):
class F(FilterSet):
class Meta:
model = Book
fields = {
"price": ["exact", "gte", "lte"],
}
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 3)
expected_list = [
"price",
"price__gte",
"price__lte",
]
self.assertCountEqual(list(F.base_filters), expected_list)
@override_settings(FILTERS_DEFAULT_LOOKUP_EXPR="lte")
def test_meta_fields_dictionary_derived_other_default_lookup(self):
class F(FilterSet):
class Meta:
model = Book
fields = {
"price": ["exact", "gte", "lte"],
}
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 3)
expected_list = [
"price__exact",
"price__gte",
"price",
]
self.assertCountEqual(list(F.base_filters), expected_list)
def test_meta_fields_containing_autofield(self):
class F(FilterSet):
username = CharFilter()
class Meta:
model = Book
fields = ("id", "username", "price")
self.assertEqual(len(F.declared_filters), 1)
self.assertEqual(len(F.base_filters), 3)
self.assertListEqual(list(F.base_filters), ["id", "username", "price"])
def test_meta_fields_dictionary_autofield(self):
class F(FilterSet):
username = CharFilter()
class Meta:
model = User
fields = {
"id": ["exact"],
"username": ["exact"],
}
self.assertEqual(len(F.declared_filters), 1)
self.assertEqual(len(F.base_filters), 2)
expected_list = ["id", "username"]
self.assertCountEqual(list(F.base_filters), expected_list)
def test_meta_fields_list_containing_unknown_fields(self):
msg = "'Meta.fields' must not contain non-model field names: " "other, another"
with self.assertRaisesMessage(TypeError, msg):
class F(FilterSet):
username = CharFilter()
class Meta:
model = Book
fields = ("username", "price", "other", "another")
def test_meta_fields_dict_containing_unknown_fields(self):
msg = "'Meta.fields' must not contain non-model field names: other"
with self.assertRaisesMessage(TypeError, msg):
class F(FilterSet):
class Meta:
model = Book
fields = {
"id": ["exact"],
"title": ["exact"],
"other": ["exact"],
}
def test_meta_fields_dict_containing_declarative_alias(self):
# Meta.fields dict cannot generate lookups for an *aliased* field
msg = "'Meta.fields' must not contain non-model field names: other"
with self.assertRaisesMessage(TypeError, msg):
class F(FilterSet):
other = CharFilter()
class Meta:
model = Book
fields = {
"id": ["exact"],
"title": ["exact"],
"other": ["exact"],
}
def test_meta_fields_invalid_lookup(self):
# We want to ensure that non existent lookups (or just simple misspellings)
# throw a useful exception containing the field and lookup expr.
msg = "Unsupported lookup 'flub' for field 'tests.User.username'."
with self.assertRaisesMessage(FieldLookupError, msg):
class F(FilterSet):
class Meta:
model = User
fields = {"username": ["flub"]}
def test_meta_exclude_with_declared_and_declared_wins(self):
class F(FilterSet):
username = CharFilter()
class Meta:
model = Book
exclude = ("username", "price")
self.assertEqual(len(F.declared_filters), 1)
self.assertEqual(len(F.base_filters), 3)
self.assertListEqual(
list(F.base_filters), ["title", "average_rating", "username"]
)
def test_meta_fields_and_exclude_and_exclude_wins(self):
class F(FilterSet):
username = CharFilter()
class Meta:
model = Book
fields = ("username", "title", "price")
exclude = ("title",)
self.assertEqual(len(F.declared_filters), 1)
self.assertEqual(len(F.base_filters), 2)
self.assertListEqual(list(F.base_filters), ["username", "price"])
def test_meta_exclude_with_no_fields(self):
class F(FilterSet):
class Meta:
model = Book
exclude = ("price",)
self.assertEqual(len(F.declared_filters), 0)
self.assertEqual(len(F.base_filters), 2)
self.assertListEqual(list(F.base_filters), ["title", "average_rating"])
def test_filterset_class_inheritance(self):
class F(FilterSet):
class Meta:
model = Book
fields = "__all__"
class G(F):
pass
self.assertEqual(set(F.base_filters), set(G.base_filters))
class F(FilterSet):
other = CharFilter
class Meta:
model = Book
fields = "__all__"
class G(F):
pass
self.assertEqual(set(F.base_filters), set(G.base_filters))
def test_abstract_model_inheritance(self):
class F(FilterSet):
class Meta:
model = Restaurant
fields = "__all__"
self.assertEqual(set(F.base_filters), set(["name", "serves_pizza"]))
class F(FilterSet):
class Meta:
model = Restaurant
fields = ["name", "serves_pizza"]
self.assertEqual(set(F.base_filters), set(["name", "serves_pizza"]))
def test_custom_field_gets_filter_from_override(self):
class F(FilterSet):
class Meta:
model = NetworkSetting
fields = "__all__"
filter_overrides = {SubnetMaskField: {"filter_class": CharFilter}}
self.assertEqual(list(F.base_filters.keys()), ["ip", "mask", "cidr"])
def test_custom_declared_field_no_warning(self):
class F(FilterSet):
mask = CharFilter()
class Meta:
model = NetworkSetting
fields = ["mask"]
self.assertEqual(list(F.base_filters.keys()), ["mask"])
def test_filterset_for_proxy_model(self):
class F(FilterSet):
class Meta:
model = User
fields = "__all__"
class ProxyF(FilterSet):
class Meta:
model = AdminUser
fields = "__all__"
self.assertEqual(list(F.base_filters), list(ProxyF.base_filters))
def test_filterset_for_mti_model(self):
class F(FilterSet):
class Meta:
model = Account
fields = "__all__"
class FtiF(FilterSet):
class Meta:
model = BankAccount
fields = "__all__"
# fails due to 'account_ptr' getting picked up
self.assertEqual(
list(F.base_filters) + ["amount_saved"], list(FtiF.base_filters)
)
def test_declared_filter_disabling(self):
class Parent(FilterSet):
f1 = CharFilter()
f2 = CharFilter()
class Child(Parent):
f1 = None
class Grandchild(Child):
pass
self.assertEqual(len(Parent.base_filters), 2)
self.assertEqual(len(Child.base_filters), 1)
self.assertEqual(len(Grandchild.base_filters), 1)
@override_settings(FILTERS_DEFAULT_LOOKUP_EXPR="lt")
def test_transforms_other_default_lookup(self):
class F(FilterSet):
class Meta:
model = Article
fields = {
"published": ["lt", "year__lt"],
}
self.assertEqual(len(F.base_filters), 2)
expected_list = ["published", "published__year"]
self.assertCountEqual(list(F.base_filters), expected_list)
def test_declared_filter_multiple_inheritance(self):
class A(FilterSet):
f = CharFilter()
class B(FilterSet):
f = NumberFilter()
class F(A, B):
pass
filters = {name: type(f) for name, f in F.declared_filters.items()}
self.assertEqual(filters, {"f": CharFilter})
def test_declared_filter_multiple_inheritance_field_ordering(self):
class Base(FilterSet):
f1 = CharFilter()
f2 = CharFilter()
class A(Base):
f3 = NumberFilter()
class B(FilterSet):
f3 = CharFilter()
f4 = CharFilter()
class F(A, B):
f2 = NumberFilter()
f5 = CharFilter()
fields = {name: type(f) for name, f in F.declared_filters.items()}
# `NumberFilter`s should be the 'winners' in filter name conflicts
# - `F.f2` should override `Base.F2`
# - `A.f3` should override `B.f3`
assert fields == {
"f1": CharFilter,
"f2": NumberFilter,
"f3": NumberFilter,
"f4": CharFilter,
"f5": CharFilter,
}
def test_filterset_factory(self):
filterset = filterset_factory(Article)
self.assertEqual(list(filterset.base_filters), ["name", "published", "author"])
def test_filterset_factory_fields(self):
filterset = filterset_factory(Article, fields=["name"])
self.assertEqual(list(filterset.base_filters), ["name"])
def test_filterset_factory_base_filter(self):
class FilterSetBase(FilterSet):
f1 = CharFilter()
f2 = CharFilter()
filterset = filterset_factory(Article, filterset=FilterSetBase)
self.assertEqual(list(filterset.base_filters), ["name", "published", "author", "f1", "f2"])
def test_filterset_factory_base_filter_fields(self):
class FilterSetBase(FilterSet):
f1 = CharFilter()
f2 = CharFilter()
filterset = filterset_factory(Article, filterset=FilterSetBase, fields=["name"])
self.assertEqual(list(filterset.base_filters), ["name", "f1", "f2"])
def test_filterset_factory_base_filter_meta_fields(self):
class FilterSetBase(FilterSet):
class Meta:
fields = ["name"]
f1 = CharFilter()
f2 = CharFilter()
filterset = filterset_factory(Article, filterset=FilterSetBase)
self.assertEqual(list(filterset.base_filters), ["name", "f1", "f2"])
def test_filterset_factory_base_filter_fields_and_meta_fields(self):
class FilterSetBase(FilterSet):
class Meta:
fields = ["name"]
f1 = CharFilter()
f2 = CharFilter()
filterset = filterset_factory(Article, filterset=FilterSetBase, fields=["author"])
self.assertEqual(list(filterset.base_filters), ["author", "f1", "f2"])
def test_filterset_factory_base_filter_meta_inheritance_filter_overrides(self):
class FilterSetBase(FilterSet):
class Meta:
filter_overrides = {
models.CharField: {
"filter_class": BooleanFilter,
},
}
filterset = filterset_factory(Article, FilterSetBase)
f = Article._meta.get_field("author")
result, params = filterset.filter_for_lookup(f, "isnull")
self.assertEqual(result, BooleanFilter)
def test_filterset_factory_base_filter_meta_inheritance_exclude(self):
class FilterSetBase(FilterSet):
class Meta:
exclude = ["published"]
filterset = filterset_factory(Article, FilterSetBase)
self.assertEqual(list(filterset.base_filters), ["name", "author"])
class FilterSetInstantiationTests(TestCase):
class F(FilterSet):
class Meta:
model = User
fields = ["username"]
def test_creating_instance(self):
f = self.F()
self.assertFalse(f.is_bound)
self.assertIsNotNone(f.queryset)
self.assertEqual(len(f.filters), len(self.F.base_filters))
for name, filter_ in f.filters.items():
self.assertEqual(
filter_.model, User, "%s does not have model set correctly" % name
)
def test_creating_bound_instance(self):
f = self.F({"username": "username"})
self.assertTrue(f.is_bound)
def test_creating_with_queryset(self):
m = mock.Mock()
f = self.F(queryset=m)
self.assertEqual(f.queryset, m)
def test_creating_with_request(self):
m = mock.Mock()
f = self.F(request=m)
self.assertEqual(f.request, m)
def test_creating_with_no_data_default(self):
f = self.F()
self.assertIsInstance(f.data, MultiValueDict)
class FilterSetQuerysetTests(TestCase):
class F(FilterSet):
invalid = CharFilter(method=lambda *args: None)
class Meta:
model = User
fields = ["username", "invalid"]
def test_filter_queryset_called_once(self):
m = MockQuerySet()
f = self.F({"username": "bob"}, queryset=m)
with mock.patch.object(f, "filter_queryset", wraps=f.filter_queryset) as fn:
f.qs
fn.assert_called_once_with(m.all())
f.qs
fn.assert_called_once_with(m.all())
def test_get_form_class_called_once(self):
f = self.F()
with mock.patch.object(f, "get_form_class", wraps=f.get_form_class) as fn:
f.form
fn.assert_called_once()
f.form
fn.assert_called_once()
def test_qs_caching(self):
m = mock.Mock()
f = self.F(queryset=m)
self.assertIs(f.qs, m.all())
self.assertIs(f.qs, f.qs)
def test_form_caching(self):
f = self.F()
self.assertIs(f.form, f.form)
def test_qs_triggers_form_validation(self):
m = MockQuerySet()
f = self.F({"username": "bob"}, queryset=m)
with mock.patch.object(f.form, "full_clean", wraps=f.form.full_clean) as fn:
fn.assert_not_called()
f.qs
fn.assert_called()
def test_filters_must_return_queryset(self):
m = MockQuerySet()
f = self.F({"invalid": "result"}, queryset=m)
msg = "Expected 'F.invalid' to return a QuerySet, but got a NoneType instead."
with self.assertRaisesMessage(AssertionError, msg):
f.qs
# test filter.method here, as it depends on its parent FilterSet
class FilterMethodTests(TestCase):
def test_none(self):
# use a mock to bypass bound/unbound method equality
class TestFilter(Filter):
filter = mock.Mock()
f = TestFilter(method=None)
self.assertIsNone(f.method)
# passing method=None should not modify filter function
self.assertIs(f.filter, TestFilter.filter)
def test_method_name(self):
class F(FilterSet):
f = Filter(method="filter_f")
def filter_f(self, qs, name, value):
pass
f = F({}, queryset=User.objects.all())
self.assertEqual(f.filters["f"].method, "filter_f")
self.assertEqual(f.filters["f"].filter.method, f.filter_f)
self.assertIsInstance(f.filters["f"].filter, FilterMethod)
def test_method_callable(self):
def filter_f(qs, name, value):
pass
class F(FilterSet):
f = Filter(method=filter_f)
f = F({}, queryset=User.objects.all())
self.assertEqual(f.filters["f"].method, filter_f)
self.assertEqual(f.filters["f"].filter.method, filter_f)
self.assertIsInstance(f.filters["f"].filter, FilterMethod)
def test_request_available_during_method_called(self):
class F(FilterSet):
f = Filter(method="filter_f")
def filter_f(self, qs, name, value):
# call mock request object to prove self.request can be accessed
self.request()
m = mock.Mock()
f = F({}, queryset=User.objects.all(), request=m)
# call the filter
f.filters["f"].filter.method(User.objects.all(), "f", "")
m.assert_called_once_with()
def test_method_with_overridden_filter(self):
# Some filter classes override the base filter() method. We need
# to ensure that passing a method argument still works correctly
class F(FilterSet):
f = DateRangeFilter(method="filter_f")
def filter_f(self, qs, name, value):
pass
f = F({}, queryset=User.objects.all())
self.assertEqual(f.filters["f"].method, "filter_f")
self.assertEqual(f.filters["f"].filter.method, f.filter_f)
def test_parent_unresolvable(self):
f = Filter(method="filter_f")
with self.assertRaises(AssertionError) as w:
f.filter(User.objects.all(), 0)
self.assertIn("'None'", str(w.exception))
self.assertIn("parent", str(w.exception))
self.assertIn("filter_f", str(w.exception))
def test_method_self_is_parent(self):
# Ensure the method isn't 're-parented' on the `FilterMethod` helper class.
# Filter methods should have access to the filterset's properties.
request = MockQuerySet()
class F(FilterSet):
f = CharFilter(method="filter_f")
class Meta:
model = User
fields = []
def filter_f(inner_self, qs, name, value):
self.assertIsInstance(inner_self, F)
self.assertIs(inner_self.request, request)
return qs
F({"f": "foo"}, request=request, queryset=User.objects.all()).qs
def test_method_unresolvable(self):
class F(FilterSet):
f = Filter(method="filter_f")
f = F({}, queryset=User.objects.all())
with self.assertRaises(AssertionError) as w:
f.filters["f"].filter(User.objects.all(), 0)
self.assertIn("%s.%s" % (F.__module__, F.__name__), str(w.exception))
self.assertIn(".filter_f()", str(w.exception))
def test_method_uncallable(self):
class F(FilterSet):
f = Filter(method="filter_f")
filter_f = 4
f = F({}, queryset=User.objects.all())
with self.assertRaises(AssertionError) as w:
f.filters["f"].filter(User.objects.all(), 0)
self.assertIn("%s.%s" % (F.__module__, F.__name__), str(w.exception))
self.assertIn(".filter_f()", str(w.exception))
def test_method_set_unset(self):
# use a mock to bypass bound/unbound method equality
class TestFilter(Filter):
filter = mock.Mock()