Add expect_error to pg_upgrade

Author: vshepard

testgres/node.py

@@ -1627,7 +1627,7 @@ def set_auto_conf(self, options, config='postgresql.auto.conf', rm_options={}):
 
         self.os_ops.write(path, auto_conf, truncate=True)
 
-    def upgrade_from(self, old_node, options=None):
+    def upgrade_from(self, old_node, options=None, expect_error=False):
         """
         Upgrade this node from an old node using pg_upgrade.
 
@@ -1656,10 +1656,11 @@ def upgrade_from(self, old_node, options=None):
             "--new-datadir", self.data_dir,
             "--old-port", str(old_node.port),
             "--new-port", str(self.port),
+            "--copy"
         ]
         upgrade_command += options
 
-        return self.os_ops.exec_command(upgrade_command)
+        return self.os_ops.exec_command(upgrade_command, expect_error=expect_error)
 
     def _get_bin_path(self, filename):
         if self.bin_dir:

testgres/operations/local_ops.py

@@ -19,13 +19,18 @@
 
 CMD_TIMEOUT_SEC = 60
 error_markers = [b'error', b'Permission denied', b'fatal']
+err_out_markers = [b'Failure']
 
 
-def has_errors(output):
+def has_errors(output=None, error=None):
     if output:
         if isinstance(output, str):
             output = output.encode(get_default_encoding())
-        return any(marker in output for marker in error_markers)
+        return any(marker in output for marker in err_out_markers)
+    if error:
+        if isinstance(error, str):
+            error = error.encode(get_default_encoding())
+        return any(marker in error for marker in error_markers)
     return False
 
 
@@ -107,8 +112,8 @@ def exec_command(self, cmd, wait_exit=False, verbose=False, expect_error=False,
         process, output, error = self._run_command(cmd, shell, input, stdin, stdout, stderr, get_process, timeout, encoding)
         if get_process:
             return process
-        if process.returncode != 0 or (has_errors(error) and not expect_error):
-            self._raise_exec_exception('Utility exited with non-zero code. Error `{}`', cmd, process.returncode, error)
+        if (process.returncode != 0 or has_errors(output=output, error=error)) and not expect_error:
+            self._raise_exec_exception('Utility exited with non-zero code. Error `{}`', cmd, process.returncode, error or output)
 
         if verbose:
             return process.returncode, output, error