Deprecated load_app().

Adjusted several tests that used it to add apps to the app cache and
then attempted to remove them by manipulating attributes directly.

Also renamed invalid_models to invalid_models_tests to avoid clashing
application labels between the outer and the inner invalid_models
applications.

4 files changed, 0 insertions, 590 deletions

diff --git a/tests/invalid_models/__init__.py b/tests/invalid_models/__init__.py
deleted file mode 100644
index e69de29bb2..0000000000
--- a/tests/invalid_models/__init__.py
+++ /dev/null
diff --git a/tests/invalid_models/invalid_models/__init__.py b/tests/invalid_models/invalid_models/__init__.py
deleted file mode 100644
index e69de29bb2..0000000000
--- a/tests/invalid_models/invalid_models/__init__.py
+++ /dev/null
diff --git a/tests/invalid_models/invalid_models/models.py b/tests/invalid_models/invalid_models/models.py
deleted file mode 100644
index 0c991dcf13..0000000000
--- a/tests/invalid_models/invalid_models/models.py
+++ /dev/null
@@ -1,535 +0,0 @@
-# encoding=utf-8
-"""
-26. Invalid models
-
-This example exists purely to point out errors in models.
-"""
-
-from __future__ import unicode_literals
-
-from django.db import connection, models
-
-
-class FieldErrors(models.Model):
-    charfield = models.CharField()
-    charfield2 = models.CharField(max_length=-1)
-    charfield3 = models.CharField(max_length="bad")
-    decimalfield = models.DecimalField()
-    decimalfield2 = models.DecimalField(max_digits=-1, decimal_places=-1)
-    decimalfield3 = models.DecimalField(max_digits="bad", decimal_places="bad")
-    decimalfield4 = models.DecimalField(max_digits=9, decimal_places=10)
-    decimalfield5 = models.DecimalField(max_digits=10, decimal_places=10)
-    choices = models.CharField(max_length=10, choices='bad')
-    choices2 = models.CharField(max_length=10, choices=[(1, 2, 3), (1, 2, 3)])
-    index = models.CharField(max_length=10, db_index='bad')
-    field_ = models.CharField(max_length=10)
-    nullbool = models.BooleanField(null=True)
-    generic_ip_notnull_blank = models.GenericIPAddressField(null=False, blank=True)
-
-
-class Target(models.Model):
-    tgt_safe = models.CharField(max_length=10)
-    clash1 = models.CharField(max_length=10)
-    clash2 = models.CharField(max_length=10)
-
-    clash1_set = models.CharField(max_length=10)
-
-
-class Clash1(models.Model):
-    src_safe = models.CharField(max_length=10)
-
-    foreign = models.ForeignKey(Target)
-    m2m = models.ManyToManyField(Target)
-
-
-class Clash2(models.Model):
-    src_safe = models.CharField(max_length=10)
-
-    foreign_1 = models.ForeignKey(Target, related_name='id')
-    foreign_2 = models.ForeignKey(Target, related_name='src_safe')
-
-    m2m_1 = models.ManyToManyField(Target, related_name='id')
-    m2m_2 = models.ManyToManyField(Target, related_name='src_safe')
-
-
-class Target2(models.Model):
-    clash3 = models.CharField(max_length=10)
-    foreign_tgt = models.ForeignKey(Target)
-    clashforeign_set = models.ForeignKey(Target)
-
-    m2m_tgt = models.ManyToManyField(Target)
-    clashm2m_set = models.ManyToManyField(Target)
-
-
-class Clash3(models.Model):
-    src_safe = models.CharField(max_length=10)
-
-    foreign_1 = models.ForeignKey(Target2, related_name='foreign_tgt')
-    foreign_2 = models.ForeignKey(Target2, related_name='m2m_tgt')
-
-    m2m_1 = models.ManyToManyField(Target2, related_name='foreign_tgt')
-    m2m_2 = models.ManyToManyField(Target2, related_name='m2m_tgt')
-
-
-class ClashForeign(models.Model):
-    foreign = models.ForeignKey(Target2)
-
-
-class ClashM2M(models.Model):
-    m2m = models.ManyToManyField(Target2)
-
-
-class SelfClashForeign(models.Model):
-    src_safe = models.CharField(max_length=10)
-    selfclashforeign = models.CharField(max_length=10)
-
-    selfclashforeign_set = models.ForeignKey("SelfClashForeign")
-    foreign_1 = models.ForeignKey("SelfClashForeign", related_name='id')
-    foreign_2 = models.ForeignKey("SelfClashForeign", related_name='src_safe')
-
-
-class ValidM2M(models.Model):
-    src_safe = models.CharField(max_length=10)
-    validm2m = models.CharField(max_length=10)
-
-    # M2M fields are symmetrical by default. Symmetrical M2M fields
-    # on self don't require a related accessor, so many potential
-    # clashes are avoided.
-    validm2m_set = models.ManyToManyField("self")
-
-    m2m_1 = models.ManyToManyField("self", related_name='id')
-    m2m_2 = models.ManyToManyField("self", related_name='src_safe')
-
-    m2m_3 = models.ManyToManyField('self')
-    m2m_4 = models.ManyToManyField('self')
-
-
-class SelfClashM2M(models.Model):
-    src_safe = models.CharField(max_length=10)
-    selfclashm2m = models.CharField(max_length=10)
-
-    # Non-symmetrical M2M fields _do_ have related accessors, so
-    # there is potential for clashes.
-    selfclashm2m_set = models.ManyToManyField("self", symmetrical=False)
-
-    m2m_1 = models.ManyToManyField("self", related_name='id', symmetrical=False)
-    m2m_2 = models.ManyToManyField("self", related_name='src_safe', symmetrical=False)
-
-    m2m_3 = models.ManyToManyField('self', symmetrical=False)
-    m2m_4 = models.ManyToManyField('self', symmetrical=False)
-
-
-class Model(models.Model):
-    "But it's valid to call a model Model."
-    year = models.PositiveIntegerField()  # 1960
-    make = models.CharField(max_length=10)  # Aston Martin
-    name = models.CharField(max_length=10)  # DB 4 GT
-
-
-class Car(models.Model):
-    colour = models.CharField(max_length=5)
-    model = models.ForeignKey(Model)
-
-
-class MissingRelations(models.Model):
-    rel1 = models.ForeignKey("Rel1")
-    rel2 = models.ManyToManyField("Rel2")
-
-
-class MissingManualM2MModel(models.Model):
-    name = models.CharField(max_length=5)
-    missing_m2m = models.ManyToManyField(Model, through="MissingM2MModel")
-
-
-class Person(models.Model):
-    name = models.CharField(max_length=5)
-
-
-class Group(models.Model):
-    name = models.CharField(max_length=5)
-    primary = models.ManyToManyField(Person, through="Membership", related_name="primary")
-    secondary = models.ManyToManyField(Person, through="Membership", related_name="secondary")
-    tertiary = models.ManyToManyField(Person, through="RelationshipDoubleFK", related_name="tertiary")
-
-
-class GroupTwo(models.Model):
-    name = models.CharField(max_length=5)
-    primary = models.ManyToManyField(Person, through="Membership")
-    secondary = models.ManyToManyField(Group, through="MembershipMissingFK")
-
-
-class Membership(models.Model):
-    person = models.ForeignKey(Person)
-    group = models.ForeignKey(Group)
-    not_default_or_null = models.CharField(max_length=5)
-
-
-class MembershipMissingFK(models.Model):
-    person = models.ForeignKey(Person)
-
-
-class PersonSelfRefM2M(models.Model):
-    name = models.CharField(max_length=5)
-    friends = models.ManyToManyField('self', through="Relationship")
-    too_many_friends = models.ManyToManyField('self', through="RelationshipTripleFK")
-
-
-class PersonSelfRefM2MExplicit(models.Model):
-    name = models.CharField(max_length=5)
-    friends = models.ManyToManyField('self', through="ExplicitRelationship", symmetrical=True)
-
-
-class Relationship(models.Model):
-    first = models.ForeignKey(PersonSelfRefM2M, related_name="rel_from_set")
-    second = models.ForeignKey(PersonSelfRefM2M, related_name="rel_to_set")
-    date_added = models.DateTimeField()
-
-
-class ExplicitRelationship(models.Model):
-    first = models.ForeignKey(PersonSelfRefM2MExplicit, related_name="rel_from_set")
-    second = models.ForeignKey(PersonSelfRefM2MExplicit, related_name="rel_to_set")
-    date_added = models.DateTimeField()
-
-
-class RelationshipTripleFK(models.Model):
-    first = models.ForeignKey(PersonSelfRefM2M, related_name="rel_from_set_2")
-    second = models.ForeignKey(PersonSelfRefM2M, related_name="rel_to_set_2")
-    third = models.ForeignKey(PersonSelfRefM2M, related_name="too_many_by_far")
-    date_added = models.DateTimeField()
-
-
-class RelationshipDoubleFK(models.Model):
-    first = models.ForeignKey(Person, related_name="first_related_name")
-    second = models.ForeignKey(Person, related_name="second_related_name")
-    third = models.ForeignKey(Group, related_name="rel_to_set")
-    date_added = models.DateTimeField()
-
-
-class AbstractModel(models.Model):
-    name = models.CharField(max_length=10)
-
-    class Meta:
-        abstract = True
-
-
-class AbstractRelationModel(models.Model):
-    fk1 = models.ForeignKey('AbstractModel')
-    fk2 = models.ManyToManyField('AbstractModel')
-
-
-class UniqueM2M(models.Model):
-    """ Model to test for unique ManyToManyFields, which are invalid. """
-    unique_people = models.ManyToManyField(Person, unique=True)
-
-
-class NonUniqueFKTarget1(models.Model):
-    """ Model to test for non-unique FK target in yet-to-be-defined model: expect an error """
-    tgt = models.ForeignKey('FKTarget', to_field='bad')
-
-
-class UniqueFKTarget1(models.Model):
-    """ Model to test for unique FK target in yet-to-be-defined model: expect no error """
-    tgt = models.ForeignKey('FKTarget', to_field='good')
-
-
-class FKTarget(models.Model):
-    bad = models.IntegerField()
-    good = models.IntegerField(unique=True)
-
-
-class NonUniqueFKTarget2(models.Model):
-    """ Model to test for non-unique FK target in previously seen model: expect an error """
-    tgt = models.ForeignKey(FKTarget, to_field='bad')
-
-
-class UniqueFKTarget2(models.Model):
-    """ Model to test for unique FK target in previously seen model: expect no error """
-    tgt = models.ForeignKey(FKTarget, to_field='good')
-
-
-class NonExistingOrderingWithSingleUnderscore(models.Model):
-    class Meta:
-        ordering = ("does_not_exist",)
-
-
-class InvalidSetNull(models.Model):
-    fk = models.ForeignKey('self', on_delete=models.SET_NULL)
-
-
-class InvalidSetDefault(models.Model):
-    fk = models.ForeignKey('self', on_delete=models.SET_DEFAULT)
-
-
-class UnicodeForeignKeys(models.Model):
-    """Foreign keys which can translate to ascii should be OK, but fail if
-    they're not."""
-    good = models.ForeignKey('FKTarget')
-    also_good = models.ManyToManyField('FKTarget', related_name='unicode2')
-
-    # In Python 3 this should become legal, but currently causes unicode errors
-    # when adding the errors in core/management/validation.py
-    #bad = models.ForeignKey('★')
-
-
-class PrimaryKeyNull(models.Model):
-    my_pk_field = models.IntegerField(primary_key=True, null=True)
-
-
-class OrderByPKModel(models.Model):
-    """
-    Model to test that ordering by pk passes validation.
-    Refs #8291
-    """
-    name = models.CharField(max_length=100, blank=True)
-
-    class Meta:
-        ordering = ('pk',)
-
-
-class SwappableModel(models.Model):
-    """A model that can be, but isn't swapped out.
-
-    References to this model *shoudln't* raise any validation error.
-    """
-    name = models.CharField(max_length=100)
-
-    class Meta:
-        swappable = 'TEST_SWAPPABLE_MODEL'
-
-
-class SwappedModel(models.Model):
-    """A model that is swapped out.
-
-    References to this model *should* raise a validation error.
-    Requires TEST_SWAPPED_MODEL to be defined in the test environment;
-    this is guaranteed by the test runner using @override_settings.
-
-    The foreign keys and m2m relations on this model *shouldn't*
-    install related accessors, so there shouldn't be clashes with
-    the equivalent names on the replacement.
-    """
-    name = models.CharField(max_length=100)
-
-    foreign = models.ForeignKey(Target, related_name='swappable_fk_set')
-    m2m = models.ManyToManyField(Target, related_name='swappable_m2m_set')
-
-    class Meta:
-        swappable = 'TEST_SWAPPED_MODEL'
-
-
-class ReplacementModel(models.Model):
-    """A replacement model for swapping purposes."""
-    name = models.CharField(max_length=100)
-
-    foreign = models.ForeignKey(Target, related_name='swappable_fk_set')
-    m2m = models.ManyToManyField(Target, related_name='swappable_m2m_set')
-
-
-class BadSwappableValue(models.Model):
-    """A model that can be swapped out; during testing, the swappable
-    value is not of the format app.model
-    """
-    name = models.CharField(max_length=100)
-
-    class Meta:
-        swappable = 'TEST_SWAPPED_MODEL_BAD_VALUE'
-
-
-class BadSwappableModel(models.Model):
-    """A model that can be swapped out; during testing, the swappable
-    value references an unknown model.
-    """
-    name = models.CharField(max_length=100)
-
-    class Meta:
-        swappable = 'TEST_SWAPPED_MODEL_BAD_MODEL'
-
-
-class HardReferenceModel(models.Model):
-    fk_1 = models.ForeignKey(SwappableModel, related_name='fk_hardref1')
-    fk_2 = models.ForeignKey('invalid_models.SwappableModel', related_name='fk_hardref2')
-    fk_3 = models.ForeignKey(SwappedModel, related_name='fk_hardref3')
-    fk_4 = models.ForeignKey('invalid_models.SwappedModel', related_name='fk_hardref4')
-    m2m_1 = models.ManyToManyField(SwappableModel, related_name='m2m_hardref1')
-    m2m_2 = models.ManyToManyField('invalid_models.SwappableModel', related_name='m2m_hardref2')
-    m2m_3 = models.ManyToManyField(SwappedModel, related_name='m2m_hardref3')
-    m2m_4 = models.ManyToManyField('invalid_models.SwappedModel', related_name='m2m_hardref4')
-
-
-class BadIndexTogether1(models.Model):
-    class Meta:
-        index_together = [
-            ["field_that_does_not_exist"],
-        ]
-
-
-class DuplicateColumnNameModel1(models.Model):
-    """
-    A field (bar) attempts to use a column name which is already auto-assigned
-    earlier in the class. This should raise a validation error.
-    """
-    foo = models.IntegerField()
-    bar = models.IntegerField(db_column='foo')
-
-    class Meta:
-        db_table = 'foobar'
-
-
-class DuplicateColumnNameModel2(models.Model):
-    """
-    A field (foo) attempts to use a column name which is already auto-assigned
-    later in the class. This should raise a validation error.
-    """
-    foo = models.IntegerField(db_column='bar')
-    bar = models.IntegerField()
-
-    class Meta:
-        db_table = 'foobar'
-
-
-class DuplicateColumnNameModel3(models.Model):
-    """Two fields attempt to use each others' names.
-
-    This is not a desirable scenario but valid nonetheless.
-
-    It should not raise a validation error.
-    """
-    foo = models.IntegerField(db_column='bar')
-    bar = models.IntegerField(db_column='foo')
-
-    class Meta:
-        db_table = 'foobar3'
-
-
-class DuplicateColumnNameModel4(models.Model):
-    """Two fields attempt to use the same db_column value.
-
-    This should raise a validation error.
-    """
-    foo = models.IntegerField(db_column='baz')
-    bar = models.IntegerField(db_column='baz')
-
-    class Meta:
-        db_table = 'foobar'
-
-
-model_errors = """invalid_models.fielderrors: "charfield": CharFields require a "max_length" attribute that is a positive integer.
-invalid_models.fielderrors: "charfield2": CharFields require a "max_length" attribute that is a positive integer.
-invalid_models.fielderrors: "charfield3": CharFields require a "max_length" attribute that is a positive integer.
-invalid_models.fielderrors: "decimalfield": DecimalFields require a "decimal_places" attribute that is a non-negative integer.
-invalid_models.fielderrors: "decimalfield": DecimalFields require a "max_digits" attribute that is a positive integer.
-invalid_models.fielderrors: "decimalfield2": DecimalFields require a "decimal_places" attribute that is a non-negative integer.
-invalid_models.fielderrors: "decimalfield2": DecimalFields require a "max_digits" attribute that is a positive integer.
-invalid_models.fielderrors: "decimalfield3": DecimalFields require a "decimal_places" attribute that is a non-negative integer.
-invalid_models.fielderrors: "decimalfield3": DecimalFields require a "max_digits" attribute that is a positive integer.
-invalid_models.fielderrors: "decimalfield4": DecimalFields require a "max_digits" attribute value that is greater than or equal to the value of the "decimal_places" attribute.
-invalid_models.fielderrors: "choices": "choices" should be iterable (e.g., a tuple or list).
-invalid_models.fielderrors: "choices2": "choices" should be a sequence of two-item iterables (e.g. list of 2 item tuples).
-invalid_models.fielderrors: "choices2": "choices" should be a sequence of two-item iterables (e.g. list of 2 item tuples).
-invalid_models.fielderrors: "index": "db_index" should be either None, True or False.
-invalid_models.fielderrors: "field_": Field names cannot end with underscores, because this would lead to ambiguous queryset filters.
-invalid_models.fielderrors: "nullbool": BooleanFields do not accept null values. Use a NullBooleanField instead.
-invalid_models.fielderrors: "generic_ip_notnull_blank": GenericIPAddressField can not accept blank values if null values are not allowed, as blank values are stored as null.
-invalid_models.clash1: Accessor for field 'foreign' clashes with field 'Target.clash1_set'. Add a related_name argument to the definition for 'foreign'.
-invalid_models.clash1: Accessor for field 'foreign' clashes with accessor for field 'Clash1.m2m'. Add a related_name argument to the definition for 'foreign'.
-invalid_models.clash1: Reverse query name for field 'foreign' clashes with field 'Target.clash1'. Add a related_name argument to the definition for 'foreign'.
-invalid_models.clash1: Accessor for m2m field 'm2m' clashes with field 'Target.clash1_set'. Add a related_name argument to the definition for 'm2m'.
-invalid_models.clash1: Accessor for m2m field 'm2m' clashes with accessor for field 'Clash1.foreign'. Add a related_name argument to the definition for 'm2m'.
-invalid_models.clash1: Reverse query name for m2m field 'm2m' clashes with field 'Target.clash1'. Add a related_name argument to the definition for 'm2m'.
-invalid_models.clash2: Accessor for field 'foreign_1' clashes with field 'Target.id'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash2: Accessor for field 'foreign_1' clashes with accessor for field 'Clash2.m2m_1'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash2: Reverse query name for field 'foreign_1' clashes with field 'Target.id'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash2: Reverse query name for field 'foreign_1' clashes with accessor for field 'Clash2.m2m_1'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash2: Accessor for field 'foreign_2' clashes with accessor for field 'Clash2.m2m_2'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.clash2: Reverse query name for field 'foreign_2' clashes with accessor for field 'Clash2.m2m_2'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.clash2: Accessor for m2m field 'm2m_1' clashes with field 'Target.id'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash2: Accessor for m2m field 'm2m_1' clashes with accessor for field 'Clash2.foreign_1'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash2: Reverse query name for m2m field 'm2m_1' clashes with field 'Target.id'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash2: Reverse query name for m2m field 'm2m_1' clashes with accessor for field 'Clash2.foreign_1'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash2: Accessor for m2m field 'm2m_2' clashes with accessor for field 'Clash2.foreign_2'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.clash2: Reverse query name for m2m field 'm2m_2' clashes with accessor for field 'Clash2.foreign_2'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.clash3: Accessor for field 'foreign_1' clashes with field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash3: Accessor for field 'foreign_1' clashes with accessor for field 'Clash3.m2m_1'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash3: Reverse query name for field 'foreign_1' clashes with field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash3: Reverse query name for field 'foreign_1' clashes with accessor for field 'Clash3.m2m_1'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.clash3: Accessor for field 'foreign_2' clashes with m2m field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.clash3: Accessor for field 'foreign_2' clashes with accessor for field 'Clash3.m2m_2'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.clash3: Reverse query name for field 'foreign_2' clashes with m2m field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.clash3: Reverse query name for field 'foreign_2' clashes with accessor for field 'Clash3.m2m_2'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.clash3: Accessor for m2m field 'm2m_1' clashes with field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash3: Accessor for m2m field 'm2m_1' clashes with accessor for field 'Clash3.foreign_1'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash3: Reverse query name for m2m field 'm2m_1' clashes with field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash3: Reverse query name for m2m field 'm2m_1' clashes with accessor for field 'Clash3.foreign_1'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.clash3: Accessor for m2m field 'm2m_2' clashes with m2m field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.clash3: Accessor for m2m field 'm2m_2' clashes with accessor for field 'Clash3.foreign_2'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.clash3: Reverse query name for m2m field 'm2m_2' clashes with m2m field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.clash3: Reverse query name for m2m field 'm2m_2' clashes with accessor for field 'Clash3.foreign_2'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.clashforeign: Accessor for field 'foreign' clashes with field 'Target2.clashforeign_set'. Add a related_name argument to the definition for 'foreign'.
-invalid_models.clashm2m: Accessor for m2m field 'm2m' clashes with m2m field 'Target2.clashm2m_set'. Add a related_name argument to the definition for 'm2m'.
-invalid_models.target2: Accessor for field 'foreign_tgt' clashes with accessor for field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'foreign_tgt'.
-invalid_models.target2: Accessor for field 'foreign_tgt' clashes with accessor for field 'Target2.clashm2m_set'. Add a related_name argument to the definition for 'foreign_tgt'.
-invalid_models.target2: Accessor for field 'foreign_tgt' clashes with accessor for field 'Target2.clashforeign_set'. Add a related_name argument to the definition for 'foreign_tgt'.
-invalid_models.target2: Accessor for field 'clashforeign_set' clashes with accessor for field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'clashforeign_set'.
-invalid_models.target2: Accessor for field 'clashforeign_set' clashes with accessor for field 'Target2.clashm2m_set'. Add a related_name argument to the definition for 'clashforeign_set'.
-invalid_models.target2: Accessor for field 'clashforeign_set' clashes with accessor for field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'clashforeign_set'.
-invalid_models.target2: Accessor for m2m field 'm2m_tgt' clashes with accessor for m2m field 'Target2.clashm2m_set'. Add a related_name argument to the definition for 'm2m_tgt'.
-invalid_models.target2: Accessor for m2m field 'm2m_tgt' clashes with accessor for field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'm2m_tgt'.
-invalid_models.target2: Accessor for m2m field 'm2m_tgt' clashes with accessor for field 'Target2.clashforeign_set'. Add a related_name argument to the definition for 'm2m_tgt'.
-invalid_models.target2: Accessor for m2m field 'clashm2m_set' clashes with accessor for m2m field 'Target2.m2m_tgt'. Add a related_name argument to the definition for 'clashm2m_set'.
-invalid_models.target2: Accessor for m2m field 'clashm2m_set' clashes with accessor for field 'Target2.foreign_tgt'. Add a related_name argument to the definition for 'clashm2m_set'.
-invalid_models.target2: Accessor for m2m field 'clashm2m_set' clashes with accessor for field 'Target2.clashforeign_set'. Add a related_name argument to the definition for 'clashm2m_set'.
-invalid_models.selfclashforeign: Accessor for field 'selfclashforeign_set' clashes with field 'SelfClashForeign.selfclashforeign_set'. Add a related_name argument to the definition for 'selfclashforeign_set'.
-invalid_models.selfclashforeign: Reverse query name for field 'selfclashforeign_set' clashes with field 'SelfClashForeign.selfclashforeign'. Add a related_name argument to the definition for 'selfclashforeign_set'.
-invalid_models.selfclashforeign: Accessor for field 'foreign_1' clashes with field 'SelfClashForeign.id'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.selfclashforeign: Reverse query name for field 'foreign_1' clashes with field 'SelfClashForeign.id'. Add a related_name argument to the definition for 'foreign_1'.
-invalid_models.selfclashforeign: Accessor for field 'foreign_2' clashes with field 'SelfClashForeign.src_safe'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.selfclashforeign: Reverse query name for field 'foreign_2' clashes with field 'SelfClashForeign.src_safe'. Add a related_name argument to the definition for 'foreign_2'.
-invalid_models.selfclashm2m: Accessor for m2m field 'selfclashm2m_set' clashes with m2m field 'SelfClashM2M.selfclashm2m_set'. Add a related_name argument to the definition for 'selfclashm2m_set'.
-invalid_models.selfclashm2m: Reverse query name for m2m field 'selfclashm2m_set' clashes with field 'SelfClashM2M.selfclashm2m'. Add a related_name argument to the definition for 'selfclashm2m_set'.
-invalid_models.selfclashm2m: Accessor for m2m field 'selfclashm2m_set' clashes with accessor for m2m field 'SelfClashM2M.m2m_3'. Add a related_name argument to the definition for 'selfclashm2m_set'.
-invalid_models.selfclashm2m: Accessor for m2m field 'selfclashm2m_set' clashes with accessor for m2m field 'SelfClashM2M.m2m_4'. Add a related_name argument to the definition for 'selfclashm2m_set'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_1' clashes with field 'SelfClashM2M.id'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_2' clashes with field 'SelfClashM2M.src_safe'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.selfclashm2m: Reverse query name for m2m field 'm2m_1' clashes with field 'SelfClashM2M.id'. Add a related_name argument to the definition for 'm2m_1'.
-invalid_models.selfclashm2m: Reverse query name for m2m field 'm2m_2' clashes with field 'SelfClashM2M.src_safe'. Add a related_name argument to the definition for 'm2m_2'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_3' clashes with m2m field 'SelfClashM2M.selfclashm2m_set'. Add a related_name argument to the definition for 'm2m_3'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_3' clashes with accessor for m2m field 'SelfClashM2M.selfclashm2m_set'. Add a related_name argument to the definition for 'm2m_3'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_3' clashes with accessor for m2m field 'SelfClashM2M.m2m_4'. Add a related_name argument to the definition for 'm2m_3'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_4' clashes with m2m field 'SelfClashM2M.selfclashm2m_set'. Add a related_name argument to the definition for 'm2m_4'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_4' clashes with accessor for m2m field 'SelfClashM2M.selfclashm2m_set'. Add a related_name argument to the definition for 'm2m_4'.
-invalid_models.selfclashm2m: Accessor for m2m field 'm2m_4' clashes with accessor for m2m field 'SelfClashM2M.m2m_3'. Add a related_name argument to the definition for 'm2m_4'.
-invalid_models.selfclashm2m: Reverse query name for m2m field 'm2m_3' clashes with field 'SelfClashM2M.selfclashm2m'. Add a related_name argument to the definition for 'm2m_3'.
-invalid_models.selfclashm2m: Reverse query name for m2m field 'm2m_4' clashes with field 'SelfClashM2M.selfclashm2m'. Add a related_name argument to the definition for 'm2m_4'.
-invalid_models.missingrelations: 'rel1' has a relation with model Rel1, which has either not been installed or is abstract.
-invalid_models.missingrelations: 'rel2' has an m2m relation with model Rel2, which has either not been installed or is abstract.
-invalid_models.grouptwo: 'primary' is a manually-defined m2m relation through model Membership, which does not have foreign keys to Person and GroupTwo
-invalid_models.grouptwo: 'secondary' is a manually-defined m2m relation through model MembershipMissingFK, which does not have foreign keys to Group and GroupTwo
-invalid_models.missingmanualm2mmodel: 'missing_m2m' specifies an m2m relation through model MissingM2MModel, which has not been installed
-invalid_models.group: The model Group has two manually-defined m2m relations through the model Membership, which is not permitted. Please consider using an extra field on your intermediary model instead.
-invalid_models.group: Intermediary model RelationshipDoubleFK has more than one foreign key to Person, which is ambiguous and is not permitted.
-invalid_models.personselfrefm2m: Many-to-many fields with intermediate tables cannot be symmetrical.
-invalid_models.personselfrefm2m: Intermediary model RelationshipTripleFK has more than two foreign keys to PersonSelfRefM2M, which is ambiguous and is not permitted.
-invalid_models.personselfrefm2mexplicit: Many-to-many fields with intermediate tables cannot be symmetrical.
-invalid_models.abstractrelationmodel: 'fk1' has a relation with model AbstractModel, which has either not been installed or is abstract.
-invalid_models.abstractrelationmodel: 'fk2' has an m2m relation with model AbstractModel, which has either not been installed or is abstract.
-invalid_models.uniquem2m: ManyToManyFields cannot be unique.  Remove the unique argument on 'unique_people'.
-invalid_models.nonuniquefktarget1: Field 'bad' under model 'FKTarget' must have a unique=True constraint.
-invalid_models.nonuniquefktarget2: Field 'bad' under model 'FKTarget' must have a unique=True constraint.
-invalid_models.nonexistingorderingwithsingleunderscore: "ordering" refers to "does_not_exist", a field that doesn't exist.
-invalid_models.invalidsetnull: 'fk' specifies on_delete=SET_NULL, but cannot be null.
-invalid_models.invalidsetdefault: 'fk' specifies on_delete=SET_DEFAULT, but has no default value.
-invalid_models.hardreferencemodel: 'fk_3' defines a relation with the model 'invalid_models.SwappedModel', which has been swapped out. Update the relation to point at settings.TEST_SWAPPED_MODEL.
-invalid_models.hardreferencemodel: 'fk_4' defines a relation with the model 'invalid_models.SwappedModel', which has been swapped out. Update the relation to point at settings.TEST_SWAPPED_MODEL.
-invalid_models.hardreferencemodel: 'm2m_3' defines a relation with the model 'invalid_models.SwappedModel', which has been swapped out. Update the relation to point at settings.TEST_SWAPPED_MODEL.
-invalid_models.hardreferencemodel: 'm2m_4' defines a relation with the model 'invalid_models.SwappedModel', which has been swapped out. Update the relation to point at settings.TEST_SWAPPED_MODEL.
-invalid_models.badswappablevalue: TEST_SWAPPED_MODEL_BAD_VALUE is not of the form 'app_label.app_name'.
-invalid_models.badswappablemodel: Model has been swapped out for 'not_an_app.Target' which has not been installed or is abstract.
-invalid_models.badindextogether1: "index_together" refers to field_that_does_not_exist, a field that doesn't exist.
-invalid_models.duplicatecolumnnamemodel1: Field 'bar' has column name 'foo' that is already used.
-invalid_models.duplicatecolumnnamemodel2: Field 'bar' has column name 'bar' that is already used.
-invalid_models.duplicatecolumnnamemodel4: Field 'bar' has column name 'baz' that is already used.
-"""
-
-if not connection.features.interprets_empty_strings_as_nulls:
-    model_errors += """invalid_models.primarykeynull: "my_pk_field": Primary key fields cannot have null=True.
-"""
diff --git a/tests/invalid_models/tests.py b/tests/invalid_models/tests.py
deleted file mode 100644
index 10d8fa47a7..0000000000
--- a/tests/invalid_models/tests.py
+++ /dev/null
@@ -1,55 +0,0 @@
-import sys
-import unittest
-
-from django.core.apps import app_cache
-from django.core.management.validation import get_validation_errors
-from django.test.utils import override_settings
-from django.utils.six import StringIO
-
-
-class InvalidModelTestCase(unittest.TestCase):
-    """Import an appliation with invalid models and test the exceptions."""
-
-    def setUp(self):
-        # Make sure sys.stdout is not a tty so that we get errors without
-        # coloring attached (makes matching the results easier). We restore
-        # sys.stderr afterwards.
-        self.old_stdout = sys.stdout
-        self.stdout = StringIO()
-        sys.stdout = self.stdout
-
-        # The models need to be removed after the test in order to prevent bad
-        # interactions with the flush operation in other tests.
-        self._old_models = app_cache.app_configs['invalid_models'].models.copy()
-
-    def tearDown(self):
-        app_cache.app_configs['invalid_models'].models = self._old_models
-        app_cache.all_models['invalid_models'] = self._old_models
-        app_cache._get_models_cache = {}
-        sys.stdout = self.old_stdout
-
-    # Technically, this isn't an override -- TEST_SWAPPED_MODEL must be
-    # set to *something* in order for the test to work. However, it's
-    # easier to set this up as an override than to require every developer
-    # to specify a value in their test settings.
-    @override_settings(
-        TEST_SWAPPED_MODEL='invalid_models.ReplacementModel',
-        TEST_SWAPPED_MODEL_BAD_VALUE='not-a-model',
-        TEST_SWAPPED_MODEL_BAD_MODEL='not_an_app.Target',
-    )
-    def test_invalid_models(self):
-        try:
-            module = app_cache.load_app("invalid_models.invalid_models")
-        except Exception:
-            self.fail('Unable to load invalid model module')
-
-        get_validation_errors(self.stdout, module)
-        self.stdout.seek(0)
-        error_log = self.stdout.read()
-        actual = error_log.split('\n')
-        expected = module.model_errors.split('\n')
-
-        unexpected = [err for err in actual if err not in expected]
-        missing = [err for err in expected if err not in actual]
-        self.assertFalse(unexpected, "Unexpected Errors: " + '\n'.join(unexpected))
-        self.assertFalse(missing, "Missing Errors: " + '\n'.join(missing))