Remove multi-db tests to make them more reliable

Fixes #213

src/auditlog_tests/models.py

@@ -172,7 +172,7 @@ class ChoicesFieldModel(models.Model):
 
     status = models.CharField(max_length=1, choices=STATUS_CHOICES)
     multiselect = MultiSelectField(max_length=3, choices=STATUS_CHOICES, max_choices=3)
-    multiplechoice = models.CharField(max_length=3, choices=STATUS_CHOICES)
+    multiplechoice = models.CharField(max_length=255, choices=STATUS_CHOICES)
 
     history = AuditlogHistoryField()
 

src/auditlog_tests/router.py

@@ -1,38 +0,0 @@
-class PostgresRouter(object):
-    """
-    A router to control all database operations on models for use with tests
-    pertaining to the postgres test database.
-    """
-    def db_for_read(self, model, **hints):
-        """
-        Attempts to read postgres models go to postgres db.
-        """
-        if model._meta.model_name.startswith('postgres'):
-            return 'postgres'
-        return None
-
-    def db_for_write(self, model, **hints):
-        """
-        Attempts to write postgres models go to postgres db.
-        """
-        if model._meta.model_name.startswith('postgres'):
-            return 'postgres'
-        return None
-
-    def allow_relation(self, obj1, obj2, **hints):
-        """
-        Allow relations if a model in the postgres app is involved.
-        """
-        if obj1._meta.model_name.startswith('postgres') or \
-           obj2._meta.model_name.startswith('postgres'):
-           return True
-        return None
-
-    def allow_migrate(self, db, app_label, model_name=None, **hints):
-        """
-        Make sure the postgres app only appears in the 'postgres db'
-        database.
-        """
-        if model_name and model_name.startswith('postgres'):
-            return db == 'postgres'
-        return None

src/auditlog_tests/test_settings.py

@@ -35,14 +35,8 @@ if django.VERSION <= (1, 9):
 else:
     POSTGRES_DRIVER = 'django.db.backends.postgresql'
 
-DATABASE_ROUTERS = ['auditlog_tests.router.PostgresRouter']
-
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': 'auditlog_tests.db',
-    },
-    'postgres': {
         'ENGINE': POSTGRES_DRIVER,
         'NAME': 'auditlog_tests_db',
         'USER': 'postgres',

src/auditlog_tests/tests.py

@@ -584,7 +584,7 @@ class PostgresArrayFieldModelTest(TestCase):
 
     @property
     def latest_array_change(self):
-        return self.obj.history.using("postgres").latest().changes_display_dict["arrayfield"][1]
+        return self.obj.history.latest().changes_display_dict["arrayfield"][1]
 
     def test_changes_display_dict_arrayfield(self):
         self.assertTrue(self.latest_array_change == "Red, Green",