Tests do not run due to missing database relations

[mpeuss]

When the app is included in INSTALLED_APPS tests from rangefilter/tests.py are executed but fail due to missing model relations in the database.

  File "/home/testapp/lib/python2.7/site-packages/rangefilter/tests.py", line 96, in setUp
    self.django_book = MyModel.objects.create(created_at=timezone.now())
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/query.py", line 394, in create
    obj.save(force_insert=True, using=self.db)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/base.py", line 808, in save
    force_update=force_update, update_fields=update_fields)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/base.py", line 838, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/base.py", line 924, in _save_table
    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/base.py", line 963, in _do_insert
    using=using, raw=raw)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/query.py", line 1079, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "/home/testapp/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1112, in execute_sql
    cursor.execute(sql, params)
  File "/home/testapp/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "/home/testapp/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/testapp/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/testapp/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
ProgrammingError: relation "rangefilter_mymodel" does not exist
LINE 1: INSERT INTO "rangefilter_mymodel" ("created_at") VALUES ('20..```

[silentsokolov]

How do you run tests?

For example, there is simple project with rangefilter in INSTALLED_APPS. Tests from rangefilter/tests.py are not executed.

$ python manage.py test                                                                                                                                           
System check identified no issues (0 silenced).

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK

[mpeuss]

Thank you for your quick response. In our projects tests are executed with py.test which finds all "test" packages. However, how are these tests supposed to be working? Migrations are missing in every case.

[silentsokolov]

It is django magic ))

Ok, later I will see how to fix the tests in your case

[silentsokolov]

@mpeuss Could you test the master branch in your system?

[mpeuss]

It works! The tests do not run anymore since you extracted them to a new app. The final package will only include the rangefilter app and not the tests app, correct?

[silentsokolov]

No, the final package will include the tests app. It is common for packages of python and sometime the tests are answer for many questions

[mpeuss]

Ok, but nonetheless it should be working. When will you release a new version? Thanks so far for your help.

[silentsokolov]

Today or tomorrow.