Follow symbolic links during searching for the unit test suites // Resolve #4288

HISTORY.rst

@@ -17,6 +17,7 @@ PlatformIO Core 6
 ~~~~~~~~~~~~~~~~~~
 
 * Control |UNITTESTING| verbosity with a new multilevel `pio test -v <https://docs.platformio.org/en/latest/core/userguide/cmd_test.html#cmdoption-pio-test-v>`__ command option (`issue #4276 <https://github.com/platformio/platformio-core/issues/4276>`_)
+* Follow symbolic links during searching for the unit test suites (`issue #4288 <https://github.com/platformio/platformio-core/issues/4288>`_)
 * Fixed an issue when the `build_src_flags <https://docs.platformio.org/en/latest/projectconf/section_env_build.html#build-src-flags>`__ option was applied outside the project scope (`issue #4277 <https://github.com/platformio/platformio-core/issues/4277>`_)
 * Fixed an issue with debugging assembly files without preprocessor (".s")
 

platformio/test/helpers.py

@@ -24,7 +24,7 @@ def list_test_names(project_config):
     if not os.path.isdir(test_dir):
         raise TestDirNotExistsError(test_dir)
     names = []
-    for root, _, __ in os.walk(test_dir):
+    for root, _, __ in os.walk(test_dir, followlinks=True):
         if not os.path.basename(root).startswith("test_"):
             continue
         names.append(os.path.relpath(root, test_dir).replace("\\", "/"))