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83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
from django.db import NotSupportedError
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from django.db.models import F, Value
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from django.db.models.functions import JSONObject, Lower
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from django.test import TestCase
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from django.test.testcases import skipIfDBFeature, skipUnlessDBFeature
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from django.utils import timezone
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from ..models import Article, Author
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@skipUnlessDBFeature('has_json_object_function')
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class JSONObjectTests(TestCase):
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@classmethod
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def setUpTestData(cls):
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Author.objects.create(name='Ivan Ivanov', alias='iivanov')
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def test_empty(self):
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obj = Author.objects.annotate(json_object=JSONObject()).first()
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self.assertEqual(obj.json_object, {})
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def test_basic(self):
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obj = Author.objects.annotate(json_object=JSONObject(name='name')).first()
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self.assertEqual(obj.json_object, {'name': 'Ivan Ivanov'})
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def test_expressions(self):
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obj = Author.objects.annotate(json_object=JSONObject(
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name=Lower('name'),
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alias='alias',
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goes_by='goes_by',
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salary=Value(30000.15),
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age=F('age') * 2,
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)).first()
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self.assertEqual(obj.json_object, {
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'name': 'ivan ivanov',
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'alias': 'iivanov',
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'goes_by': None,
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'salary': 30000.15,
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'age': 60,
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})
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def test_nested_json_object(self):
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obj = Author.objects.annotate(json_object=JSONObject(
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name='name',
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nested_json_object=JSONObject(
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alias='alias',
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age='age',
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),
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)).first()
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self.assertEqual(obj.json_object, {
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'name': 'Ivan Ivanov',
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'nested_json_object': {
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'alias': 'iivanov',
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'age': 30,
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},
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})
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def test_nested_empty_json_object(self):
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obj = Author.objects.annotate(json_object=JSONObject(
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name='name',
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nested_json_object=JSONObject(),
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)).first()
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self.assertEqual(obj.json_object, {
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'name': 'Ivan Ivanov',
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'nested_json_object': {},
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})
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def test_textfield(self):
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Article.objects.create(
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title='The Title',
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text='x' * 4000,
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written=timezone.now(),
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)
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obj = Article.objects.annotate(json_object=JSONObject(text=F('text'))).first()
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self.assertEqual(obj.json_object, {'text': 'x' * 4000})
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@skipIfDBFeature('has_json_object_function')
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class JSONObjectNotSupportedTests(TestCase):
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def test_not_supported(self):
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msg = 'JSONObject() is not supported on this database backend.'
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with self.assertRaisesMessage(NotSupportedError, msg):
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Author.objects.annotate(json_object=JSONObject()).get()
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