Ssh command line in RemoteOperations::execute is corrected

We use subprocess.list2cmdline(cmd) to pack a user command line.

It allows PostgresNode::_psql to build PSQL command line without a "special case" for remote-host.

Also

RemoteOperations::execute raises exception if 'cmd' parameter has an unknown type.

Author: dmitry-lipetsk

testgres/node.py

@@ -1125,10 +1125,7 @@ def _psql(
 
         # select query source
         if query:
-            if self.os_ops.remote:
-                psql_params.extend(("-c", '"{}"'.format(query)))
-            else:
-                psql_params.extend(("-c", query))
+            psql_params.extend(("-c", query))
         elif filename:
             psql_params.extend(("-f", filename))
         else:

testgres/operations/remote_ops.py

@@ -80,7 +80,10 @@ def exec_command(self, cmd, wait_exit=False, verbose=False, expect_error=False,
         if isinstance(cmd, str):
             ssh_cmd = ['ssh', self.ssh_dest] + self.ssh_args + [cmd]
         elif isinstance(cmd, list):
-            ssh_cmd = ['ssh', self.ssh_dest] + self.ssh_args + cmd
+            ssh_cmd = ['ssh', self.ssh_dest] + self.ssh_args + [subprocess.list2cmdline(cmd)]
+        else:
+            raise ValueError("Invalid 'cmd' argument type - {0}".format(type(cmd).__name__))
+
         process = subprocess.Popen(ssh_cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         assert not (process is None)
         if get_process: