Fix quota tests for static credentials

when running tempest tests with static set of credentials Tempest does
not create new tenants on the fly, and those pre-defined tenants may alreay
have configured quotas that are different from default project ones.

For quota tests to reliaby pass we need to store the original quotas in the
beginning of the test and update to them in the cleanUp phase instead
of deleting them (which resets them to the default ones).

Change-Id: Ia1de916a97fee81148976a5b9cb134e012af8e0c
Closes-Bug: #1800470

designate_tempest_plugin/tests/api/admin/test_quotas.py

@@ -36,6 +36,12 @@ class QuotasAdminTest(BaseQuotasTest):
 
     credentials = ["admin"]
 
+    def setUp(self):
+        super(QuotasAdminTest, self).setUp()
+        _, original_quotas = self.admin_client.show_quotas()
+        self.addCleanup(self.admin_client.update_quotas,
+                        **original_quotas['quota'])
+
     @classmethod
     def setup_credentials(cls):
         # Do not create network resources for these test.

designate_tempest_plugin/tests/api/v2/test_quotas.py

@@ -52,8 +52,22 @@ class QuotasV2Test(base.BaseDnsV2Test):
         cls.admin_client = cls.os_admin.quotas_client
         cls.alt_client = cls.os_alt.quotas_client
 
+    def _store_quotas(self, project_id=None, cleanup=True):
+        """Remember current quotas and reset them after the test"""
+        params = {}
+        if project_id:
+            params['project_id'] = project_id
+            params['headers'] = {'X-Auth-All-Projects': True}
+
+        _r, original_quotas = self.admin_client.show_quotas(**params)
+        params.update(original_quotas)
+        if cleanup:
+            self.addCleanup(self.admin_client.update_quotas, **params)
+        return original_quotas
+
     @decorators.idempotent_id('1dac991a-9e2e-452c-a47a-26ac37381ec5')
     def test_show_quotas(self):
+        self._store_quotas()
         LOG.info("Updating quotas")
         quotas = dns_data_utils.rand_quotas()
         _, body = self.admin_client.update_quotas(**quotas)
@@ -67,6 +81,7 @@ class QuotasV2Test(base.BaseDnsV2Test):
 
     @decorators.idempotent_id('0448b089-5803-4ce3-8a6c-5c15ff75a2cc')
     def test_delete_quotas(self):
+        self._store_quotas()
         LOG.info("Deleting quotas")
         _, body = self.admin_client.delete_quotas()
 
@@ -75,10 +90,10 @@ class QuotasV2Test(base.BaseDnsV2Test):
 
     @decorators.idempotent_id('76d24c87-1b39-4e19-947c-c08e1380dc61')
     def test_update_quotas(self):
+        self._store_quotas()
         LOG.info("Updating quotas")
         quotas = dns_data_utils.rand_quotas()
         _, body = self.admin_client.update_quotas(**quotas)
-        self.addCleanup(self.admin_client.delete_quotas)
 
         LOG.info("Ensuring the response has all quota types")
         self.assertExpected(quotas, body, [])
@@ -87,6 +102,7 @@ class QuotasV2Test(base.BaseDnsV2Test):
     def test_update_quotas_other_project(self):
 
         project_id = self.quotas_client.tenant_id
+        self._store_quotas(project_id=project_id)
 
         LOG.info("Updating quotas for %s ", project_id)
 
@@ -95,7 +111,6 @@ class QuotasV2Test(base.BaseDnsV2Test):
         request['project_id'] = project_id
         request['headers'] = {'X-Auth-All-Projects': True}
         _, body = self.admin_client.update_quotas(**request)
-        self.addCleanup(self.admin_client.delete_quotas, project_id=project_id)
 
         LOG.info("Ensuring the response has all quota types")
         self.assertExpected(quotas, body, [])
@@ -109,8 +124,13 @@ class QuotasV2Test(base.BaseDnsV2Test):
 
         LOG.info("Using 'alt' project id to set quotas on.")
         project_id = self.alt_client.tenant_id
+        self._store_quotas(project_id=project_id)
 
-        _, original_quotas = self.admin_client.show_quotas(
+        LOG.info("Resetting quotas to default for %s ", project_id)
+        self.admin_client.delete_quotas(
+            project_id=project_id,
+            headers={'X-Auth-All-Projects': True})
+        _, default_quotas = self.admin_client.show_quotas(
             project_id=project_id, headers={'X-Auth-All-Projects': True})
 
         LOG.info("Updating quotas for %s ", project_id)
@@ -120,7 +140,6 @@ class QuotasV2Test(base.BaseDnsV2Test):
         request['project_id'] = project_id
         request['headers'] = {'X-Auth-All-Projects': True}
         _, body = self.admin_client.update_quotas(**request)
-        self.addCleanup(self.admin_client.delete_quotas, project_id=project_id)
 
         self.admin_client.delete_quotas(
             project_id=project_id,
@@ -129,7 +148,7 @@ class QuotasV2Test(base.BaseDnsV2Test):
         _, final_quotas = self.admin_client.show_quotas(
             project_id=project_id, headers={'X-Auth-All-Projects': True})
 
-        self.assertExpected(original_quotas, final_quotas, [])
+        self.assertExpected(default_quotas, final_quotas, [])
 
     @decorators.idempotent_id('9b09b3e2-7e88-4569-bce3-9be2f7ac70c4')
     def test_update_quotas_invalid_project(self):
@@ -139,19 +158,17 @@ class QuotasV2Test(base.BaseDnsV2Test):
                                      "is not being verified.")
 
         project_id = 'project-that-does-not-exist'
+        original_quotas = self._store_quotas(project_id=project_id,
+                                             cleanup=False)
 
         LOG.info("Updating quotas for non-existing %s ", project_id)
 
-        _, original_quotas = self.admin_client.show_quotas(
-            project_id=project_id, headers={'X-Auth-All-Projects': True})
-
         quotas = dns_data_utils.rand_quotas()
         request = quotas.copy()
         request['project_id'] = project_id
         request['headers'] = {'X-Auth-All-Projects': True}
         with self.assertRaisesDns(lib_exc.BadRequest, 'invalid_project', 400):
             self.admin_client.update_quotas(**request)
-        self.addCleanup(self.admin_client.delete_quotas, project_id=project_id)
 
         _, client_body = self.quotas_client.show_quotas()