tests: changes to tests.README and minor corrections

Author: gsmolk

tests/Readme.md

@@ -15,6 +15,7 @@ Check archive compression:
 
 Usage:
  pip install testgres==0.4.0
+ pip install psycopg2
  export PG_CONFIG=/path/to/pg_config
  python -m unittest [-v] tests[.specific_module][.class.test]
 ```

tests/backup_test.py

@@ -403,7 +403,13 @@ def test_checksumm_fail_heal_via_ptrack_fail(self):
             self.assertTrue(
                 "WARNING: File" in e.message and
                 "blknum" in e.message and
-                "have wrong checksum" in e.message,
+                "have wrong checksum" in e.message and
+                "try to fetch via SQL" in e.message and
+                "WARNING:  page verification failed, "
+                "calculated checksum" in e.message and
+                "ERROR: query failed: "
+                "ERROR:  invalid page in block" in e.message and
+                "query was: SELECT pg_ptrack_get_block_2" in e.message,
                 "\n Unexpected Error Message: {0}\n CMD: {1}".format(
                     repr(e.message), self.cmd))
 

tests/ptrack_clean.py

@@ -13,10 +13,14 @@ class SimpleTest(ProbackupTest, unittest.TestCase):
     def test_ptrack_clean(self):
         """Take backups of every available types and check that PTRACK is clean"""
         fname = self.id().split('.')[3]
-        node = self.make_simple_node(base_dir="{0}/{1}/node".format(module_name, fname),
+        node = self.make_simple_node(
+            base_dir="{0}/{1}/node".format(module_name, fname),
             set_replication=True,
             initdb_params=['--data-checksums'],
-            pg_options={'ptrack_enable': 'on', 'wal_level': 'replica', 'max_wal_senders': '2'})
+            pg_options={
+                'ptrack_enable': 'on',
+                'wal_level': 'replica',
+                'max_wal_senders': '2'})
         backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
         self.init_pb(backup_dir)
         self.add_instance(backup_dir, 'node', node)
@@ -53,7 +57,9 @@ def test_ptrack_clean(self):
         node.safe_psql('postgres', 'vacuum t_heap')
 
         # Take PTRACK backup to clean every ptrack
-        backup_id = self.backup_node(backup_dir, 'node', node, backup_type='ptrack', options=['-j100'])
+        backup_id = self.backup_node(
+            backup_dir, 'node', node, backup_type='ptrack',
+            options=['-j100', '--log-level-file=verbose'])
         node.safe_psql('postgres', 'checkpoint')
 
         for i in idx_ptrack:

tests/validate_test.py

@@ -967,7 +967,8 @@ def test_validate_wal_lost_segment_1(self):
         # Delete wal segment
         wals_dir = os.path.join(backup_dir, 'wal', 'node')
         wals = [f for f in os.listdir(wals_dir) if os.path.isfile(os.path.join(wals_dir, f)) and not f.endswith('.backup')]
-        file = os.path.join(backup_dir, 'wal', 'node', wals[1])
+        wals.sort()
+        file = os.path.join(backup_dir, 'wal', 'node', wals[3])
         os.remove(file)
 
         # cut out '.gz'