Fail if no "INFO test_" lines are found in pathfinder test output (#979)

* Fail if no "INFO test_" lines are found in pathfinder test output

* Number of "INFO test_" lines: 48

Author: rwgk

ci/tools/run-tests

@@ -35,7 +35,10 @@ if [[ "${test_module}" == "pathfinder" ]]; then
       "LD:${CUDA_PATHFINDER_TEST_LOAD_NVIDIA_DYNAMIC_LIB_STRICTNESS} " \
       "FH:${CUDA_PATHFINDER_TEST_FIND_NVIDIA_HEADERS_STRICTNESS}"
   pwd
-  pytest -ra -s -v tests/
+  pytest -ra -s -v tests/ |& tee /tmp/pathfinder_test_log.txt
+  # Fail if no "INFO test_" lines are found; capture line count otherwise
+  line_count=$(grep '^INFO test_' /tmp/pathfinder_test_log.txt | wc -l)
+  echo "Number of \"INFO test_\" lines: $line_count"
   popd
 elif [[ "${test_module}" == "bindings" ]]; then
   pushd "${CUDA_BINDINGS_ARTIFACTS_DIR}"