run_device_tests.py: Improve logs readability

The output logs from the FPMCU are not decoded and can be hard to read.
Improve readability by decoding escape characters (e.g. \n) and by
reducing the size of the log lines header.

Before:
  DEBUG:root:b'Running test_num_iterations...\r\n'
  DEBUG:root:b'Pass: num_calls == 5\r\n'

After:
  DEBUG:Running test_num_iterations...
  DEBUG:Pass: num_calls == 5

BUG=b:263804978
TEST=test/run_device_tests.py -b bloonchipper -t benchmark
BRANCH=none

Change-Id: Ie0332cd100d83e8daaf0ee4b41997b97242c58a6
Signed-off-by: Andrea Grandi <agrandi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4126660
Reviewed-by: Josie Nordrum <josienordrum@google.com>
Code-Coverage: Zoss <zoss-cl-coverage@prod.google.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/test/run_device_tests.py b/test/run_device_tests.py
index c5e7adf70e..c75639a948 100755
--- a/test/run_device_tests.py
+++ b/test/run_device_tests.py
@@ -633,7 +633,7 @@ def run_test(
                 return False
             continue
 
-        logging.debug(line)
+        logging.debug(line.decode("utf-8").rstrip())
         test.logs.append(line)
         # Look for test_print_result() output (success or failure)
         line_str = process_console_output_line(line, test)
@@ -859,7 +859,9 @@ def main():
     )
 
     args = parser.parse_args()
-    logging.basicConfig(level=args.log_level)
+    logging.basicConfig(
+        format="%(levelname)s:%(message)s", level=args.log_level
+    )
     validate_args_combination(args)
 
     board_config = BOARD_CONFIGS[args.board]