integration tests: add --force-color & set in CI

github actions supports color output, but does not report as a tty.
See https://github.com/actions/runner/issues/241.

test/mavsdk_tests/integration_test_runner/logger_helper.py

@@ -4,6 +4,7 @@ import os
 from enum import Enum
 from functools import lru_cache
 
+force_color = False
 
 class color(Enum):
     PURPLE = '\033[95m'
@@ -20,7 +21,7 @@ class color(Enum):
 
 
 def colorize(text: str, c: color) -> str:
-    if _supports_color():
+    if force_color or _supports_color():
         return str(c.value) + text + color.RESET.value
     else:
         return text

test/mavsdk_tests/mavsdk_test_runner.py

@@ -7,7 +7,7 @@ import psutil  # type: ignore
 import signal
 import subprocess
 import sys
-from integration_test_runner import test_runner
+from integration_test_runner import test_runner, logger_helper
 import integration_test_runner.process_helper as ph
 from typing import Any, Dict, List, NoReturn
 
@@ -70,6 +70,8 @@ def main() -> NoReturn:
                         help="choice from valgrind, callgrind, gdb, lldb")
     parser.add_argument("--upload", default=False, action='store_true',
                         help="Upload logs to logs.px4.io")
+    parser.add_argument("--force-color", default=False, action='store_true',
+                        help="Force colorized output")
     parser.add_argument("--verbose", default=False, action='store_true',
                         help="enable more verbose output")
     parser.add_argument("config_file", help="JSON config file to use")
@@ -78,6 +80,9 @@ def main() -> NoReturn:
                         help="relative path where the built files are stored")
     args = parser.parse_args()
 
+    if args.force_color:
+        logger_helper.force_color = True
+
     with open(args.config_file) as json_file:
         config = json.load(json_file)