From: Lukáš Ježek <lukas.jezek@nic.cz>
Date: Wed, 16 Sep 2020 11:09:43 +0000 (+0200)
Subject: ci: pylint: fix raise-missing-from warning (W0707)
X-Git-Tag: v5.2.0~34^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c96fc4a883936214a4207020030fc54a62f84da;p=thirdparty%2Fknot-resolver.git

ci: pylint: fix raise-missing-from warning (W0707)
---

diff --git a/tests/pytests/kresd.py b/tests/pytests/kresd.py
index 75776f2ea..f190003db 100644
--- a/tests/pytests/kresd.py
+++ b/tests/pytests/kresd.py
@@ -263,9 +263,9 @@ def take_port(port, ip=None, ip6=None, timeout=0):
     end_time = time.time() + timeout
     try:
         port_path.touch(exist_ok=False)
-    except FileExistsError:
+    except FileExistsError as ex:
         raise ValueError(
-            "Port {} already reserved by system or another kresd instance!".format(port))
+            "Port {} already reserved by system or another kresd instance!".format(port)) from ex
 
     while True:
         if is_port_free(port, ip, ip6):
diff --git a/tests/pytests/utils.py b/tests/pytests/utils.py
index 2953f2a61..812b6f3ce 100644
--- a/tests/pytests/utils.py
+++ b/tests/pytests/utils.py
@@ -103,9 +103,9 @@ def expect_kresd_close(rst_ok=False):
         try:
             time.sleep(0.2)  # give kresd time to close connection with TCP FIN
             yield
-        except ConnectionResetError:
+        except ConnectionResetError as ex:
             if rst_ok:
-                raise BrokenPipeError
+                raise BrokenPipeError from ex
             pytest.skip("kresd closed connection with TCP RST")
         pytest.fail("kresd didn't close the connection")