|
| 1 | +from django.core.exceptions import FieldError, ValidationError |
| 2 | +from django.db import models |
| 3 | +from django.test import SimpleTestCase, TestCase |
| 4 | +from django.test.utils import isolate_apps |
| 5 | + |
| 6 | +from django_mongodb_backend.fields import EmbeddedModelArrayField |
| 7 | +from django_mongodb_backend.models import EmbeddedModel |
| 8 | + |
| 9 | +from .models import ( |
| 10 | + Data, |
| 11 | + Holder, |
| 12 | + Movie, |
| 13 | + Review, |
| 14 | +) |
| 15 | + |
| 16 | + |
| 17 | +class MethodTests(SimpleTestCase): |
| 18 | + def test_deconstruct(self): |
| 19 | + field = EmbeddedModelArrayField("Data", null=True) |
| 20 | + name, path, args, kwargs = field.deconstruct() |
| 21 | + self.assertEqual(path, "django_mongodb_backend.fields.EmbeddedModelArrayField") |
| 22 | + self.assertEqual(args, []) |
| 23 | + self.assertEqual(kwargs, {"embedded_model": "Data", "null": True}) |
| 24 | + |
| 25 | + def test_get_db_prep_save_invalid(self): |
| 26 | + msg = "Expected instance of type <class 'model_fields_.models.Data'>, " "not <class 'int'>." |
| 27 | + with self.assertRaisesMessage(TypeError, msg): |
| 28 | + Holder(data=42).save() |
| 29 | + |
| 30 | + def test_validate(self): |
| 31 | + obj = Holder(data=Data(integer=None)) |
| 32 | + # This isn't quite right because "integer" is the subfield of data |
| 33 | + # that's non-null. |
| 34 | + msg = "{'data': ['This field cannot be null.']}" |
| 35 | + with self.assertRaisesMessage(ValidationError, msg): |
| 36 | + obj.full_clean() |
| 37 | + |
| 38 | + |
| 39 | +class ModelTests(TestCase): |
| 40 | + def test_save_load(self): |
| 41 | + reviews = [ |
| 42 | + Review(title="The best", rating=10), |
| 43 | + Review(title="Mediocre", rating=5), |
| 44 | + Review(title="Horrible", rating=1), |
| 45 | + ] |
| 46 | + Movie.objects.create(title="Lion King", reviews=reviews) |
| 47 | + movie = Movie.objects.get(title="Lion King") |
| 48 | + self.assertEqual(movie.reviews[0].title, "The best") |
| 49 | + self.assertEqual(movie.reviews[0].rating, 10) |
| 50 | + self.assertEqual(movie.reviews[1].title, "Mediocre") |
| 51 | + self.assertEqual(movie.reviews[1].rating, 5) |
| 52 | + self.assertEqual(movie.reviews[2].title, "Horrible") |
| 53 | + self.assertEqual(movie.reviews[2].rating, 1) |
| 54 | + self.assertEqual(len(movie.reviews), 3) |
| 55 | + |
| 56 | + def test_save_load_null(self): |
| 57 | + movie = Movie.objects.create(title="Lion King") |
| 58 | + movie = Movie.objects.get(title="Lion King") |
| 59 | + self.assertIsNone(movie.reviews) |
| 60 | + |
| 61 | + |
| 62 | +class QueryingTests(TestCase): |
| 63 | + @classmethod |
| 64 | + def setUpTestData(cls): |
| 65 | + reviews = [ |
| 66 | + Review(title="The best", rating=10), |
| 67 | + Review(title="Mediocre", rating=5), |
| 68 | + Review(title="Horrible", rating=1), |
| 69 | + ] |
| 70 | + cls.clouds = Movie.objects.create(title="Clouds", reviews=reviews) |
| 71 | + reviews = [ |
| 72 | + Review(title="Super", rating=9), |
| 73 | + Review(title="Meh", rating=5), |
| 74 | + Review(title="Horrible", rating=2), |
| 75 | + ] |
| 76 | + cls.frozen = Movie.objects.create(title="Frozen", reviews=reviews) |
| 77 | + reviews = [ |
| 78 | + Review(title="Excellent", rating=9), |
| 79 | + Review(title="Wow", rating=8), |
| 80 | + Review(title="Classic", rating=7), |
| 81 | + ] |
| 82 | + cls.bears = Movie.objects.create(title="Bears", reviews=reviews) |
| 83 | + |
| 84 | + def test_filter_with_field(self): |
| 85 | + msg = ( |
| 86 | + "Unsupported lookup 'title' for EmbeddedModelArrayField or join " |
| 87 | + "on the field not permitted." |
| 88 | + ) |
| 89 | + with self.assertRaisesMessage(FieldError, msg): |
| 90 | + Movie.objects.filter(reviews__title="Horrible") |
| 91 | + |
| 92 | + |
| 93 | +@isolate_apps("model_fields_") |
| 94 | +class CheckTests(SimpleTestCase): |
| 95 | + def test_no_relational_fields(self): |
| 96 | + class Target(EmbeddedModel): |
| 97 | + key = models.ForeignKey("MyModel", models.CASCADE) |
| 98 | + |
| 99 | + class MyModel(models.Model): |
| 100 | + field = EmbeddedModelArrayField(Target) |
| 101 | + |
| 102 | + errors = MyModel().check() |
| 103 | + self.assertEqual(len(errors), 1) |
| 104 | + self.assertEqual(errors[0].id, "django_mongodb_backend.array.E001") |
| 105 | + msg = errors[0].msg |
| 106 | + self.assertEqual( |
| 107 | + msg, |
| 108 | + "Base field for array has errors:\n " |
| 109 | + "Embedded models cannot have relational fields (Target.key is a ForeignKey). " |
| 110 | + "(django_mongodb_backend.embedded_model.E001)", |
| 111 | + ) |
| 112 | + |
| 113 | + def test_embedded_model_subclass(self): |
| 114 | + class Target(models.Model): |
| 115 | + pass |
| 116 | + |
| 117 | + class MyModel(models.Model): |
| 118 | + field = EmbeddedModelArrayField(Target) |
| 119 | + |
| 120 | + errors = MyModel().check() |
| 121 | + self.assertEqual(len(errors), 1) |
| 122 | + self.assertEqual(errors[0].id, "django_mongodb_backend.array.E001") |
| 123 | + msg = errors[0].msg |
| 124 | + self.assertEqual( |
| 125 | + msg, |
| 126 | + "Base field for array has errors:\n " |
| 127 | + "Embedded models must be a subclass of " |
| 128 | + "django_mongodb_backend.models.EmbeddedModel. " |
| 129 | + "(django_mongodb_backend.embedded_model.E002)", |
| 130 | + ) |
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