#31299: DB not flushed between TestCases
-------------------------------------+-------------------------------------
               Reporter:  Lokesh     |          Owner:  nobody
  Gurram                             |
                   Type:  Bug        |         Status:  new
              Component:  Testing    |        Version:  2.2
  framework                          |
               Severity:  Normal     |       Keywords:  TestCases, Fixtures
           Triage Stage:             |      Has patch:  0
  Unreviewed                         |
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  0
                  UI/UX:  0          |
-------------------------------------+-------------------------------------
 Consider the case where I have two fixtures and two different TestCase
 classes that use them.

 **fixture1.json**

 {{{
 [
 {
     "model": "app1.user",
     "pk": 1,
     "fields": {
         "password": "",
         "last_login": null,
         "is_superuser": false,
         "username": "tesuser1",
         "first_name": "",
         "last_name": "",
         "is_staff": false,
         "is_active": true,
         "date_joined": "2020-02-21T12:59:17.302Z",
         "email": null,
         "groups": [],
         "user_permissions": []
     }
 }
 ]
 }}}

 **fixture2.json**

 {{{
 [
 {
     "model": "app1.user",
     "pk": 2,
     "fields": {
         "password": "",
         "last_login": null,
         "is_superuser": false,
         "username": "testuser2",
         "first_name": "",
         "last_name": "",
         "is_staff": false,
         "is_active": true,
         "date_joined": "2020-02-21T12:59:17.302Z",
         "email": null,
         "groups": [],
         "user_permissions": []
     }
 }
 ]
 }}}


 **Here are my test cases**
 {{{
 class Test1(TestCase):
     fixtures = ['fixture1.json']

     @classmethod
     def tearDownClass(cls):
         super(TestCase, cls).tearDownClass()

     def test_demo(self):
         u = User.objects.get(username='testuser1')
         #some testing

 class Test2(TestCase):
     fixtures = ['fixture2.json']

     @classmethod
     def tearDownClass(cls):
         super(TestCase, cls).tearDownClass()

     def test_demo2(self):
         try:
             u = User.objects.get(username='testuser1')
             print("Found him")
             #Some testing
         except:
             pass
 }}}

 I wouldn't expect to find testuser1 in my second test case as the fixtures
 for it doesn't have that particular user.

 **From django  documentation:**
 At the start of each test, before setUp() is run, Django will flush the
 database, returning the database to the state it was in directly after
 migrate was called.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/31299>
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