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468 lines
16 KiB
Python
468 lines
16 KiB
Python
import datetime
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import uuid
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from decimal import Decimal
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from django.core import checks, exceptions, serializers
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from django.core.serializers.json import DjangoJSONEncoder
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from django.db.models import Q
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from django.forms import CharField, Form, widgets
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from django.test.utils import isolate_apps
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from django.utils.html import escape
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from . import PostgreSQLSimpleTestCase, PostgreSQLTestCase
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from .models import JSONModel, PostgreSQLModel
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try:
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from django.contrib.postgres import forms
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from django.contrib.postgres.fields import JSONField
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except ImportError:
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pass
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class TestSaveLoad(PostgreSQLTestCase):
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def test_null(self):
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instance = JSONModel()
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertIsNone(loaded.field)
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def test_empty_object(self):
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instance = JSONModel(field={})
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertEqual(loaded.field, {})
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def test_empty_list(self):
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instance = JSONModel(field=[])
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertEqual(loaded.field, [])
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def test_boolean(self):
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instance = JSONModel(field=True)
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertIs(loaded.field, True)
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def test_string(self):
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instance = JSONModel(field='why?')
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertEqual(loaded.field, 'why?')
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def test_number(self):
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instance = JSONModel(field=1)
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertEqual(loaded.field, 1)
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def test_realistic_object(self):
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obj = {
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'a': 'b',
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'c': 1,
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'd': ['e', {'f': 'g'}],
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'h': True,
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'i': False,
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'j': None,
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}
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instance = JSONModel(field=obj)
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instance.save()
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loaded = JSONModel.objects.get()
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self.assertEqual(loaded.field, obj)
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def test_custom_encoding(self):
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"""
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JSONModel.field_custom has a custom DjangoJSONEncoder.
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"""
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some_uuid = uuid.uuid4()
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obj_before = {
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'date': datetime.date(2016, 8, 12),
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'datetime': datetime.datetime(2016, 8, 12, 13, 44, 47, 575981),
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'decimal': Decimal('10.54'),
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'uuid': some_uuid,
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}
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obj_after = {
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'date': '2016-08-12',
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'datetime': '2016-08-12T13:44:47.575',
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'decimal': '10.54',
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'uuid': str(some_uuid),
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}
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JSONModel.objects.create(field_custom=obj_before)
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loaded = JSONModel.objects.get()
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self.assertEqual(loaded.field_custom, obj_after)
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class TestQuerying(PostgreSQLTestCase):
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@classmethod
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def setUpTestData(cls):
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cls.objs = [
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JSONModel.objects.create(field=None),
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JSONModel.objects.create(field=True),
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JSONModel.objects.create(field=False),
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JSONModel.objects.create(field='yes'),
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JSONModel.objects.create(field=7),
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JSONModel.objects.create(field=[]),
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JSONModel.objects.create(field={}),
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JSONModel.objects.create(field={
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'a': 'b',
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'c': 1,
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}),
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JSONModel.objects.create(field={
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'a': 'b',
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'c': 1,
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'd': ['e', {'f': 'g'}],
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'h': True,
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'i': False,
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'j': None,
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'k': {'l': 'm'},
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}),
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JSONModel.objects.create(field=[1, [2]]),
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JSONModel.objects.create(field={
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'k': True,
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'l': False,
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}),
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JSONModel.objects.create(field={'foo': 'bar'}),
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]
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def test_exact(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__exact={}),
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[self.objs[6]]
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)
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def test_exact_complex(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__exact={'a': 'b', 'c': 1}),
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[self.objs[7]]
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)
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def test_isnull(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__isnull=True),
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[self.objs[0]]
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)
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def test_ordering_by_transform(self):
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objs = [
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JSONModel.objects.create(field={'ord': 93, 'name': 'bar'}),
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JSONModel.objects.create(field={'ord': 22.1, 'name': 'foo'}),
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JSONModel.objects.create(field={'ord': -1, 'name': 'baz'}),
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JSONModel.objects.create(field={'ord': 21.931902, 'name': 'spam'}),
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JSONModel.objects.create(field={'ord': -100291029, 'name': 'eggs'}),
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]
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query = JSONModel.objects.filter(field__name__isnull=False).order_by('field__ord')
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self.assertSequenceEqual(query, [objs[4], objs[2], objs[3], objs[1], objs[0]])
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def test_deep_values(self):
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query = JSONModel.objects.values_list('field__k__l')
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self.assertSequenceEqual(
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query,
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[
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(None,), (None,), (None,), (None,), (None,), (None,),
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(None,), (None,), ('m',), (None,), (None,), (None,),
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]
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)
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def test_deep_distinct(self):
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query = JSONModel.objects.distinct('field__k__l').values_list('field__k__l')
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self.assertSequenceEqual(query, [('m',), (None,)])
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def test_isnull_key(self):
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# key__isnull works the same as has_key='key'.
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__a__isnull=True),
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self.objs[:7] + self.objs[9:]
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)
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__a__isnull=False),
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[self.objs[7], self.objs[8]]
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)
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def test_none_key(self):
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self.assertSequenceEqual(JSONModel.objects.filter(field__j=None), [self.objs[8]])
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def test_none_key_exclude(self):
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obj = JSONModel.objects.create(field={'j': 1})
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self.assertSequenceEqual(JSONModel.objects.exclude(field__j=None), [obj])
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def test_isnull_key_or_none(self):
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obj = JSONModel.objects.create(field={'a': None})
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self.assertSequenceEqual(
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JSONModel.objects.filter(Q(field__a__isnull=True) | Q(field__a=None)),
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self.objs[:7] + self.objs[9:] + [obj]
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)
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def test_contains(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__contains={'a': 'b'}),
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[self.objs[7], self.objs[8]]
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)
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def test_contained_by(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__contained_by={'a': 'b', 'c': 1, 'h': True}),
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[self.objs[6], self.objs[7]]
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)
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def test_has_key(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__has_key='a'),
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[self.objs[7], self.objs[8]]
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)
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def test_has_keys(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__has_keys=['a', 'c', 'h']),
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[self.objs[8]]
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)
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def test_has_any_keys(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__has_any_keys=['c', 'l']),
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[self.objs[7], self.objs[8], self.objs[10]]
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)
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def test_shallow_list_lookup(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__0=1),
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[self.objs[9]]
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)
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def test_shallow_obj_lookup(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__a='b'),
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[self.objs[7], self.objs[8]]
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)
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def test_deep_lookup_objs(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__k__l='m'),
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[self.objs[8]]
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)
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def test_shallow_lookup_obj_target(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__k={'l': 'm'}),
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[self.objs[8]]
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)
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def test_deep_lookup_array(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__1__0=2),
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[self.objs[9]]
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)
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def test_deep_lookup_mixed(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__d__1__f='g'),
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[self.objs[8]]
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)
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def test_deep_lookup_transform(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__c__gt=1),
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[]
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)
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self.assertSequenceEqual(
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JSONModel.objects.filter(field__c__lt=5),
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[self.objs[7], self.objs[8]]
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)
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def test_usage_in_subquery(self):
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self.assertSequenceEqual(
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JSONModel.objects.filter(id__in=JSONModel.objects.filter(field__c=1)),
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self.objs[7:9]
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)
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def test_iexact(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__iexact='BaR').exists())
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self.assertFalse(JSONModel.objects.filter(field__foo__iexact='"BaR"').exists())
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def test_icontains(self):
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self.assertFalse(JSONModel.objects.filter(field__foo__icontains='"bar"').exists())
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def test_startswith(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__startswith='b').exists())
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def test_istartswith(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__istartswith='B').exists())
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def test_endswith(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__endswith='r').exists())
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def test_iendswith(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__iendswith='R').exists())
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def test_regex(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__regex=r'^bar$').exists())
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def test_iregex(self):
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self.assertTrue(JSONModel.objects.filter(field__foo__iregex=r'^bAr$').exists())
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@isolate_apps('postgres_tests')
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class TestChecks(PostgreSQLSimpleTestCase):
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def test_invalid_default(self):
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class MyModel(PostgreSQLModel):
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field = JSONField(default={})
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model = MyModel()
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self.assertEqual(model.check(), [
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checks.Warning(
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msg=(
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"JSONField default should be a callable instead of an "
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"instance so that it's not shared between all field "
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"instances."
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),
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hint='Use a callable instead, e.g., use `dict` instead of `{}`.',
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obj=MyModel._meta.get_field('field'),
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id='postgres.E003',
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)
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])
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def test_valid_default(self):
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class MyModel(PostgreSQLModel):
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field = JSONField(default=dict)
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model = MyModel()
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self.assertEqual(model.check(), [])
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def test_valid_default_none(self):
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class MyModel(PostgreSQLModel):
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field = JSONField(default=None)
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model = MyModel()
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self.assertEqual(model.check(), [])
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class TestSerialization(PostgreSQLSimpleTestCase):
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test_data = (
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'[{"fields": {"field": %s, "field_custom": null}, '
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'"model": "postgres_tests.jsonmodel", "pk": null}]'
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)
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test_values = (
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# (Python value, serialized value),
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({'a': 'b', 'c': None}, '{"a": "b", "c": null}'),
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('abc', '"abc"'),
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('{"a": "a"}', '"{\\"a\\": \\"a\\"}"'),
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)
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def test_dumping(self):
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for value, serialized in self.test_values:
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with self.subTest(value=value):
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instance = JSONModel(field=value)
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data = serializers.serialize('json', [instance])
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self.assertJSONEqual(data, self.test_data % serialized)
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def test_loading(self):
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for value, serialized in self.test_values:
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with self.subTest(value=value):
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instance = list(serializers.deserialize('json', self.test_data % serialized))[0].object
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self.assertEqual(instance.field, value)
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class TestValidation(PostgreSQLSimpleTestCase):
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def test_not_serializable(self):
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field = JSONField()
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with self.assertRaises(exceptions.ValidationError) as cm:
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field.clean(datetime.timedelta(days=1), None)
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self.assertEqual(cm.exception.code, 'invalid')
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self.assertEqual(cm.exception.message % cm.exception.params, "Value must be valid JSON.")
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def test_custom_encoder(self):
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with self.assertRaisesMessage(ValueError, "The encoder parameter must be a callable object."):
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field = JSONField(encoder=DjangoJSONEncoder())
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field = JSONField(encoder=DjangoJSONEncoder)
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self.assertEqual(field.clean(datetime.timedelta(days=1), None), datetime.timedelta(days=1))
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class TestFormField(PostgreSQLSimpleTestCase):
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def test_valid(self):
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field = forms.JSONField()
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value = field.clean('{"a": "b"}')
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self.assertEqual(value, {'a': 'b'})
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def test_valid_empty(self):
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field = forms.JSONField(required=False)
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value = field.clean('')
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self.assertIsNone(value)
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def test_invalid(self):
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field = forms.JSONField()
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with self.assertRaises(exceptions.ValidationError) as cm:
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field.clean('{some badly formed: json}')
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self.assertEqual(cm.exception.messages[0], "'{some badly formed: json}' value must be valid JSON.")
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def test_formfield(self):
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model_field = JSONField()
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form_field = model_field.formfield()
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self.assertIsInstance(form_field, forms.JSONField)
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def test_formfield_disabled(self):
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class JsonForm(Form):
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name = CharField()
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jfield = forms.JSONField(disabled=True)
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form = JsonForm({'name': 'xyz', 'jfield': '["bar"]'}, initial={'jfield': ['foo']})
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self.assertIn('["foo"]</textarea>', form.as_p())
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def test_prepare_value(self):
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field = forms.JSONField()
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self.assertEqual(field.prepare_value({'a': 'b'}), '{"a": "b"}')
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self.assertEqual(field.prepare_value(None), 'null')
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self.assertEqual(field.prepare_value('foo'), '"foo"')
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def test_redisplay_wrong_input(self):
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"""
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When displaying a bound form (typically due to invalid input), the form
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should not overquote JSONField inputs.
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"""
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class JsonForm(Form):
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name = CharField(max_length=2)
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jfield = forms.JSONField()
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# JSONField input is fine, name is too long
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form = JsonForm({'name': 'xyz', 'jfield': '["foo"]'})
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self.assertIn('["foo"]</textarea>', form.as_p())
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# This time, the JSONField input is wrong
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form = JsonForm({'name': 'xy', 'jfield': '{"foo"}'})
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# Appears once in the textarea and once in the error message
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self.assertEqual(form.as_p().count(escape('{"foo"}')), 2)
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def test_widget(self):
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"""The default widget of a JSONField is a Textarea."""
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field = forms.JSONField()
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self.assertIsInstance(field.widget, widgets.Textarea)
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def test_custom_widget_kwarg(self):
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"""The widget can be overridden with a kwarg."""
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field = forms.JSONField(widget=widgets.Input)
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self.assertIsInstance(field.widget, widgets.Input)
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def test_custom_widget_attribute(self):
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"""The widget can be overridden with an attribute."""
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class CustomJSONField(forms.JSONField):
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widget = widgets.Input
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field = CustomJSONField()
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self.assertIsInstance(field.widget, widgets.Input)
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def test_already_converted_value(self):
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field = forms.JSONField(required=False)
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tests = [
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'["a", "b", "c"]', '{"a": 1, "b": 2}', '1', '1.5', '"foo"',
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'true', 'false', 'null',
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]
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for json_string in tests:
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val = field.clean(json_string)
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self.assertEqual(field.clean(val), val)
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def test_has_changed(self):
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field = forms.JSONField()
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self.assertIs(field.has_changed({'a': True}, '{"a": 1}'), True)
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self.assertIs(field.has_changed({'a': 1, 'b': 2}, '{"b": 2, "a": 1}'), False)
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