tests: fix default failed dir setting

When running tests via run.sh, default setting of None would cause
failed directory symlink to appear in vpp workspace with an ugly name.
This patch places the symlink in temporary directory.

Type: fix
Fixes: b23ffd7ef216463c35b75c831e6a27e58971f4ec
Signed-off-by: Klement Sekera <klement.sekera@gmail.com>
Change-Id: Ic1715eba7ac1f82f71855e2aeb9b659d27bbb3af

2 files changed, 7 insertions, 8 deletions

diff --git a/test/config.py b/test/config.py
index c99d1ca66a6..b94dbcb10d7 100644
--- a/test/config.py
+++ b/test/config.py
@@ -1,7 +1,6 @@
 import argparse
 import os
 import psutil
-import textwrap
 import time
 
 
@@ -119,7 +118,7 @@ parser.add_argument(
     "--failed-dir",
     action="store",
     type=directory,
-    help="directory containing failed tests",
+    help="directory containing failed tests (default: --tmp-dir)",
 )
 
 filter_help_string = """\
@@ -357,8 +356,7 @@ parser.add_argument(
     "--keep-pcaps",
     action="store_true",
     default=default_keep_pcaps,
-    help="if set, keep all pcap files from a test run"
-    f" (default: {default_keep_pcaps})",
+    help=f"if set, keep all pcap files from a test run (default: {default_keep_pcaps})",
 )
 
 config = parser.parse_args()
@@ -399,6 +397,9 @@ config.test_src_dir = test_dirs
 if config.venv_dir is None:
     config.venv_dir = f"{ws}/test/venv"
 
+if config.failed_dir is None:
+    config.failed_dir = f"{config.tmp_dir}"
+
 available_cpus = psutil.Process().cpu_affinity()
 num_cpus = len(available_cpus)
 
diff --git a/test/run_tests.py b/test/run_tests.py
index 5df37efba6b..917e0dc0057 100644
--- a/test/run_tests.py
+++ b/test/run_tests.py
@@ -5,7 +5,6 @@ import shutil
 import os
 import fnmatch
 import unittest
-import argparse
 import time
 import threading
 import traceback
@@ -14,7 +13,6 @@ import re
 from multiprocessing import Process, Pipe, get_context
 from multiprocessing.queues import Queue
 from multiprocessing.managers import BaseManager
-import framework
 from config import config, num_cpus, available_cpus, max_vpp_cpus
 from framework import (
     VppTestRunner,
@@ -28,7 +26,7 @@ from framework import (
     TEST_RUN,
     SKIP_CPU_SHORTAGE,
 )
-from debug import spawn_gdb, start_vpp_in_gdb
+from debug import spawn_gdb
 from log import (
     get_parallel_logger,
     double_line_delim,
@@ -269,7 +267,7 @@ def handle_failed_suite(logger, last_test_temp_dir, vpp_pid, vpp_binary):
     if last_test_temp_dir:
         # Need to create link in case of a timeout or core dump without failure
         lttd = os.path.basename(last_test_temp_dir)
-        link_path = "%s%s-FAILED" % (config.failed_dir, lttd)
+        link_path = os.path.join(config.failed_dir, f"{lttd}-FAILED")
         if not os.path.exists(link_path):
             os.symlink(last_test_temp_dir, link_path)
         logger.error(