Fixes if tests/archive.py for passing tests on Windows

Author: dlepikhova

Diff for: tests/archive.py

@@ -1845,8 +1845,15 @@ def test_undefined_wal_file_path(self):
         self.init_pb(backup_dir)
         self.add_instance(backup_dir, 'node', node)
         self.set_archiving(backup_dir, 'node', node)
-        archive_command = '\"{0}\" archive-push -B \"{1}\" --instance \"{2}\" --wal-file-name=%f'.format(
-            self.probackup_path, backup_dir, 'node')
+        if os.name == 'posix':
+            archive_command = '\"{0}\" archive-push -B \"{1}\" --instance \"{2}\" --wal-file-name=%f'.format(
+                self.probackup_path, backup_dir, 'node')
+        elif os.name == 'nt':
+            archive_command = '\"{0}\" archive-push -B \"{1}\" --instance \"{2}\" --wal-file-name=%f'.format(
+                self.probackup_path, backup_dir, 'node').replace("\\","\\\\")
+        else:
+            self.assertTrue(False, 'Unexpected os family')
+
         self.set_auto_conf(
                 node,
                 {'archive_command': archive_command})
@@ -1892,7 +1899,7 @@ def test_intermediate_archiving(self):
         if os.name == 'posix':
             self.set_archiving(backup_dir, 'node', node, custom_archive_command='cp -v %p {0}/%f'.format(wal_dir))
         elif os.name == 'nt':
-            self.set_archiving(backup_dir, 'node', node, custom_archive_command='xcopy /F "%p" "{0}\\%f"'.format(wal_dir.replace("\\","\\\\")))
+            self.set_archiving(backup_dir, 'node', node, custom_archive_command='copy /Y "%p" "{0}\\\\%f"'.format(wal_dir.replace("\\","\\\\")))
         else:
             self.assertTrue(False, 'Unexpected os family')
 
@@ -1919,10 +1926,6 @@ def test_waldir_outside_pgdata_archiving(self):
         """
         check that archive-push works correct with symlinked waldir
         """
-        if self.pg_config_version < self.version_to_num('10.0'):
-            return unittest.skip(
-                'Skipped because waldir outside pgdata is supported since PG 10')
-
         fname = self.id().split('.')[3]
         backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
         external_wal_dir = os.path.join(self.tmp_path, module_name, fname, 'ext_wal_dir')
@@ -1932,6 +1935,11 @@ def test_waldir_outside_pgdata_archiving(self):
             base_dir=os.path.join(module_name, fname, 'node'),
             initdb_params=['--data-checksums', '--waldir={0}'.format(external_wal_dir)])
 
+        if self.get_version(node) < self.version_to_num('10.0'):
+            self.del_test_dir(module_name, fname)
+            return unittest.skip(
+                'Skipped because waldir outside pgdata is supported since PG 10')
+
         self.init_pb(backup_dir)
         self.add_instance(backup_dir, 'node', node)
         self.set_archiving(backup_dir, 'node', node)