test(pathfinder): preserve logging info but require opt-in behavior

ci/tools/run-tests

@@ -32,10 +32,7 @@ if [[ "${test_module}" == "pathfinder" ]]; then
   echo "Running pathfinder tests with " \
       "LD:${CUDA_PATHFINDER_TEST_LOAD_NVIDIA_DYNAMIC_LIB_STRICTNESS} " \
       "FH:${CUDA_PATHFINDER_TEST_FIND_NVIDIA_HEADERS_STRICTNESS}"
-  pytest -ra -s -v tests/ |& tee /tmp/pathfinder_test_log.txt
-  # Fail if no "INFO test_" lines are found; capture line count otherwise
-  line_count=$(grep '^INFO test_' /tmp/pathfinder_test_log.txt | wc -l)
-  echo "Number of \"INFO test_\" lines: $line_count"
+  pytest -ra --log-cli-level=INFO -v tests/
   popd
 elif [[ "${test_module}" == "bindings" ]]; then
   pushd "${CUDA_BINDINGS_ARTIFACTS_DIR}"

cuda_pathfinder/tests/test_find_nvidia_headers.py

@@ -15,6 +15,7 @@
 
 import functools
 import importlib.metadata
+import logging
 import os
 import re
 
@@ -45,9 +46,9 @@ def test_unknown_libname():
         find_nvidia_header_directory("unknown-libname")
 
 
-def test_find_libname_nvshmem(info_summary_append):
+def test_find_libname_nvshmem():
     hdr_dir = find_nvidia_header_directory("nvshmem")
-    info_summary_append(f"{hdr_dir=!r}")
+    logging.info(f"{hdr_dir=!r}")
     if IS_WINDOWS:
         assert hdr_dir is None
         pytest.skip("nvshmem has no Windows support.")
@@ -70,9 +71,9 @@ def test_supported_headers_site_packages_ctk_consistency():
 
 
 @pytest.mark.parametrize("libname", SUPPORTED_HEADERS_CTK.keys())
-def test_find_ctk_headers(info_summary_append, libname):
+def test_find_ctk_headers(libname):
     hdr_dir = find_nvidia_header_directory(libname)
-    info_summary_append(f"{hdr_dir=!r}")
+    logging.info(f"{hdr_dir=!r}")
     if hdr_dir:
         assert os.path.isdir(hdr_dir)
         h_filename = SUPPORTED_HEADERS_CTK[libname]

cuda_pathfinder/tests/test_load_nvidia_dynamic_lib.py

@@ -3,6 +3,7 @@
 
 import functools
 import json
+import logging
 import os
 from unittest.mock import patch
 
@@ -93,7 +94,7 @@ def _get_libnames_for_test_load_nvidia_dynamic_lib():
 
 
 @pytest.mark.parametrize("libname", _get_libnames_for_test_load_nvidia_dynamic_lib())
-def test_load_nvidia_dynamic_lib(info_summary_append, libname):
+def test_load_nvidia_dynamic_lib(libname):
     # We intentionally run each dynamic library operation in a child process
     # to ensure isolation of global dynamic linking state (e.g., dlopen handles).
     # Without child processes, loading/unloading libraries during testing could
@@ -110,8 +111,8 @@ def raise_child_process_failed():
     if result.stdout.startswith("CHILD_LOAD_NVIDIA_DYNAMIC_LIB_HELPER_DYNAMIC_LIB_NOT_FOUND_ERROR:"):
         if STRICTNESS == "all_must_work":
             raise_child_process_failed()
-        info_summary_append(f"Not found: {libname=!r}")
+        logging.info(f"Not found: {libname=!r}")
     else:
         abs_path = json.loads(result.stdout.rstrip())
-        info_summary_append(f"abs_path={quote_for_shell(abs_path)}")
+        logging.info(f"abs_path={quote_for_shell(abs_path)}")
         assert os.path.isfile(abs_path)  # double-check the abs_path