98 lines
3.0 KiB
Python
98 lines
3.0 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(
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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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)
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).first()
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self.assertEqual(
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obj.json_object,
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{
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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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)
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def test_nested_json_object(self):
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obj = Author.objects.annotate(
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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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)
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).first()
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self.assertEqual(
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obj.json_object,
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{
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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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)
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def test_nested_empty_json_object(self):
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obj = Author.objects.annotate(
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json_object=JSONObject(
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name="name",
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nested_json_object=JSONObject(),
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)
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).first()
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self.assertEqual(
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obj.json_object,
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{
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"name": "Ivan Ivanov",
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"nested_json_object": {},
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},
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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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