fix: clean node data after test

Author: a.kozhemyakin

tests/helpers/ptrack_helpers.py

@@ -145,6 +145,7 @@ def slow_start(self, replica=False):
 class ProbackupTest(object):
     # Class attributes
     enterprise = is_enterprise()
+    nodes = []
 
     def __init__(self, *args, **kwargs):
         super(ProbackupTest, self).__init__(*args, **kwargs)
@@ -402,7 +403,7 @@ def make_simple_node(
         if node.major_version >= 13:
             self.set_auto_conf(
                 node, {}, 'postgresql.conf', ['wal_keep_segments'])
-
+        self.nodes.append(node)
         return node
 
     def create_tblspace_in_node(self, node, tblspc_name, tblspc_path=None, cfs=False):
@@ -1521,8 +1522,17 @@ def del_test_dir(self, module_name, fname, nodes=[]):
         except:
             pass
 
-        for node in nodes:
-            node.stop()
+        try:
+            if not nodes:
+                for node in list(self.nodes):
+                    node.stop()
+                    self.nodes.remove(node)
+            else:
+                for node in list(nodes):
+                    node.stop()
+                    self.nodes.remove(node)
+        except:
+            pass
 
         shutil.rmtree(
             os.path.join(
@@ -1533,7 +1543,7 @@ def del_test_dir(self, module_name, fname, nodes=[]):
             ignore_errors=True
         )
         try:
-            os.rmdir(os.path.join(self.tmp_path, module_name))
+            shutil.rmtree(os.path.join(self.tmp_path, module_name), ignore_errors=True)
         except:
             pass