Better error message: UNKNOWN libname='unknown-libname'

Author: rwgk

cuda_bindings/cuda/bindings/_path_finder/find_nvidia_headers.py

@@ -11,7 +11,9 @@
 
 @functools.cache
 def find_nvidia_header_directory(libname: str) -> str:
-    assert libname == "nvshmem"
+    if libname != "nvshmem":
+        raise RuntimeError(f"UNKNOWN {libname=}")
+
     assert not IS_WINDOWS
 
     # Installed from a wheel

cuda_bindings/tests/test_path_finder_find_headers.py

@@ -7,7 +7,7 @@
 
 
 def test_find_nvidia_header_directory(info_summary_append):
-    with pytest.raises(AssertionError):
+    with pytest.raises(RuntimeError, match="^UNKNOWN libname='unknown-libname'$"):
         find_nvidia_headers.find_nvidia_header_directory("unknown-libname")
 
     hdr_dir = find_nvidia_headers.find_nvidia_header_directory("nvshmem")