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395 lines
18 KiB
Python
395 lines
18 KiB
Python
from django.apps import apps
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from django.db import models
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from django.test import SimpleTestCase, override_settings
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from django.test.utils import isolate_lru_cache
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from django.utils import six
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class FieldDeconstructionTests(SimpleTestCase):
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"""
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Tests the deconstruct() method on all core fields.
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"""
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def test_name(self):
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"""
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Tests the outputting of the correct name if assigned one.
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"""
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# First try using a "normal" field
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field = models.CharField(max_length=65)
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name, path, args, kwargs = field.deconstruct()
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self.assertIsNone(name)
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field.set_attributes_from_name("is_awesome_test")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(name, "is_awesome_test")
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self.assertIsInstance(name, six.text_type)
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# Now try with a ForeignKey
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field = models.ForeignKey("some_fake.ModelName", models.CASCADE)
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name, path, args, kwargs = field.deconstruct()
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self.assertIsNone(name)
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field.set_attributes_from_name("author")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(name, "author")
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def test_auto_field(self):
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field = models.AutoField(primary_key=True)
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field.set_attributes_from_name("id")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.AutoField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"primary_key": True})
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def test_big_integer_field(self):
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field = models.BigIntegerField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.BigIntegerField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_boolean_field(self):
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field = models.BooleanField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.BooleanField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.BooleanField(default=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.BooleanField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"default": True})
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def test_char_field(self):
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field = models.CharField(max_length=65)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.CharField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_length": 65})
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field = models.CharField(max_length=65, null=True, blank=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.CharField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_length": 65, "null": True, "blank": True})
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def test_char_field_choices(self):
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field = models.CharField(max_length=1, choices=(("A", "One"), ("B", "Two")))
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.CharField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"choices": [("A", "One"), ("B", "Two")], "max_length": 1})
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def test_csi_field(self):
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field = models.CommaSeparatedIntegerField(max_length=100)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.CommaSeparatedIntegerField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_length": 100})
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def test_date_field(self):
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field = models.DateField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DateField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.DateField(auto_now=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DateField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"auto_now": True})
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def test_datetime_field(self):
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field = models.DateTimeField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DateTimeField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.DateTimeField(auto_now_add=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DateTimeField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"auto_now_add": True})
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# Bug #21785
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field = models.DateTimeField(auto_now=True, auto_now_add=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DateTimeField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"auto_now_add": True, "auto_now": True})
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def test_decimal_field(self):
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field = models.DecimalField(max_digits=5, decimal_places=2)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DecimalField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_digits": 5, "decimal_places": 2})
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def test_decimal_field_0_decimal_places(self):
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"""
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A DecimalField with decimal_places=0 should work (#22272).
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"""
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field = models.DecimalField(max_digits=5, decimal_places=0)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.DecimalField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_digits": 5, "decimal_places": 0})
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def test_email_field(self):
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field = models.EmailField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.EmailField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_length": 254})
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field = models.EmailField(max_length=255)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.EmailField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_length": 255})
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def test_file_field(self):
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field = models.FileField(upload_to="foo/bar")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.FileField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"upload_to": "foo/bar"})
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# Test max_length
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field = models.FileField(upload_to="foo/bar", max_length=200)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.FileField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"upload_to": "foo/bar", "max_length": 200})
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def test_file_path_field(self):
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field = models.FilePathField(match=r".*\.txt$")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.FilePathField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"match": r".*\.txt$"})
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field = models.FilePathField(recursive=True, allow_folders=True, max_length=123)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.FilePathField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"recursive": True, "allow_folders": True, "max_length": 123})
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def test_float_field(self):
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field = models.FloatField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.FloatField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_foreign_key(self):
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# Test basic pointing
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from django.contrib.auth.models import Permission
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field = models.ForeignKey("auth.Permission", models.CASCADE)
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field.remote_field.model = Permission
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field.remote_field.field_name = "id"
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "on_delete": models.CASCADE})
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self.assertFalse(hasattr(kwargs['to'], "setting_name"))
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# Test swap detection for swappable model
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field = models.ForeignKey("auth.User", models.CASCADE)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.User", "on_delete": models.CASCADE})
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self.assertEqual(kwargs['to'].setting_name, "AUTH_USER_MODEL")
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# Test nonexistent (for now) model
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field = models.ForeignKey("something.Else", models.CASCADE)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "something.Else", "on_delete": models.CASCADE})
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# Test on_delete
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field = models.ForeignKey("auth.User", models.SET_NULL)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.User", "on_delete": models.SET_NULL})
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# Test to_field preservation
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field = models.ForeignKey("auth.Permission", models.CASCADE, to_field="foobar")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "to_field": "foobar", "on_delete": models.CASCADE})
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# Test related_name preservation
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field = models.ForeignKey("auth.Permission", models.CASCADE, related_name="foobar")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "related_name": "foobar", "on_delete": models.CASCADE})
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@override_settings(AUTH_USER_MODEL="auth.Permission")
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def test_foreign_key_swapped(self):
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with isolate_lru_cache(apps.get_swappable_settings_name):
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# It doesn't matter that we swapped out user for permission;
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# there's no validation. We just want to check the setting stuff works.
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field = models.ForeignKey("auth.Permission", models.CASCADE)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ForeignKey")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "on_delete": models.CASCADE})
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self.assertEqual(kwargs['to'].setting_name, "AUTH_USER_MODEL")
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def test_image_field(self):
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field = models.ImageField(upload_to="foo/barness", width_field="width", height_field="height")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ImageField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"upload_to": "foo/barness", "width_field": "width", "height_field": "height"})
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def test_integer_field(self):
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field = models.IntegerField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.IntegerField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_ip_address_field(self):
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field = models.IPAddressField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.IPAddressField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_generic_ip_address_field(self):
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field = models.GenericIPAddressField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.GenericIPAddressField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.GenericIPAddressField(protocol="IPv6")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.GenericIPAddressField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"protocol": "IPv6"})
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def test_many_to_many_field(self):
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# Test normal
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field = models.ManyToManyField("auth.Permission")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ManyToManyField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission"})
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self.assertFalse(hasattr(kwargs['to'], "setting_name"))
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# Test swappable
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field = models.ManyToManyField("auth.User")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ManyToManyField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.User"})
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self.assertEqual(kwargs['to'].setting_name, "AUTH_USER_MODEL")
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# Test through
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field = models.ManyToManyField("auth.Permission", through="auth.Group")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ManyToManyField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "through": "auth.Group"})
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# Test custom db_table
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field = models.ManyToManyField("auth.Permission", db_table="custom_table")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ManyToManyField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "db_table": "custom_table"})
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# Test related_name
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field = models.ManyToManyField("auth.Permission", related_name="custom_table")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ManyToManyField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission", "related_name": "custom_table"})
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@override_settings(AUTH_USER_MODEL="auth.Permission")
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def test_many_to_many_field_swapped(self):
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with isolate_lru_cache(apps.get_swappable_settings_name):
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# It doesn't matter that we swapped out user for permission;
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# there's no validation. We just want to check the setting stuff works.
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field = models.ManyToManyField("auth.Permission")
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.ManyToManyField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"to": "auth.Permission"})
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self.assertEqual(kwargs['to'].setting_name, "AUTH_USER_MODEL")
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def test_null_boolean_field(self):
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field = models.NullBooleanField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.NullBooleanField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_positive_integer_field(self):
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field = models.PositiveIntegerField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.PositiveIntegerField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_positive_small_integer_field(self):
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field = models.PositiveSmallIntegerField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.PositiveSmallIntegerField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_slug_field(self):
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field = models.SlugField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.SlugField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.SlugField(db_index=False, max_length=231)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.SlugField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"db_index": False, "max_length": 231})
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def test_small_integer_field(self):
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field = models.SmallIntegerField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.SmallIntegerField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_text_field(self):
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field = models.TextField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.TextField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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def test_time_field(self):
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field = models.TimeField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.TimeField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.TimeField(auto_now=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {'auto_now': True})
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field = models.TimeField(auto_now_add=True)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {'auto_now_add': True})
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def test_url_field(self):
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field = models.URLField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.URLField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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field = models.URLField(max_length=231)
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.URLField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {"max_length": 231})
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def test_binary_field(self):
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field = models.BinaryField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(path, "django.db.models.BinaryField")
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self.assertEqual(args, [])
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self.assertEqual(kwargs, {})
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