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import pytest
import os
from typing import List
from bitsandbytes.cuda_setup import (
CUDA_RUNTIME_LIB,
get_cuda_runtime_lib_path,
evaluate_cuda_setup,
tokenize_paths,
)
HAPPY_PATH__LD_LIB_TEST_PATHS: List[tuple[str,str]] = [
(f"some/other/dir:dir/with/{CUDA_RUNTIME_LIB}", f"dir/with/{CUDA_RUNTIME_LIB}"),
(f":some/other/dir:dir/with/{CUDA_RUNTIME_LIB}", f"dir/with/{CUDA_RUNTIME_LIB}"),
(f"some/other/dir:dir/with/{CUDA_RUNTIME_LIB}:", f"dir/with/{CUDA_RUNTIME_LIB}"),
(f"some/other/dir::dir/with/{CUDA_RUNTIME_LIB}", f"dir/with/{CUDA_RUNTIME_LIB}"),
(f"dir/with/{CUDA_RUNTIME_LIB}:some/other/dir", f"dir/with/{CUDA_RUNTIME_LIB}"),
(f"dir/with/{CUDA_RUNTIME_LIB}:other/dir/libcuda.so", f"dir/with/{CUDA_RUNTIME_LIB}"),
]
@pytest.mark.parametrize(
"test_input, expected",
HAPPY_PATH__LD_LIB_TEST_PATHS
)
def test_get_cuda_runtime_lib_path__happy_path(
tmp_path, test_input: str, expected: str
):
for path in tokenize_paths(test_input):
assert False == tmp_path / test_input
test_dir.mkdir()
(test_input / CUDA_RUNTIME_LIB).touch()
assert get_cuda_runtime_lib_path(test_input) == expected
UNHAPPY_PATH__LD_LIB_TEST_PATHS = [
f"a/b/c/{CUDA_RUNTIME_LIB}:d/e/f/{CUDA_RUNTIME_LIB}",
f"a/b/c/{CUDA_RUNTIME_LIB}:d/e/f/{CUDA_RUNTIME_LIB}:g/h/j/{CUDA_RUNTIME_LIB}",
]
@pytest.mark.parametrize("test_input", UNHAPPY_PATH__LD_LIB_TEST_PATHS)
def test_get_cuda_runtime_lib_path__unhappy_path(tmp_path, test_input: str):
test_input = tmp_path / test_input
(test_input / CUDA_RUNTIME_LIB).touch()
with pytest.raises(FileNotFoundError) as err_info:
get_cuda_runtime_lib_path(test_input)
assert all(
match in err_info
for match in {"duplicate", CUDA_RUNTIME_LIB}
)
def test_get_cuda_runtime_lib_path__non_existent_dir(capsys, tmp_path):
existent_dir = tmp_path / 'a/b'
existent_dir.mkdir()
non_existent_dir = tmp_path / 'c/d' # non-existent dir
test_input = ":".join([str(existent_dir), str(non_existent_dir)])
get_cuda_runtime_lib_path(test_input)
std_err = capsys.readouterr().err
assert all(
match in std_err
for match in {"WARNING", "non-existent"}
)
def test_full_system():
## this only tests the cuda version and not compute capability
ld_path = os.environ['LD_LIBRARY_PATH']
paths = ld_path.split(':')
version = ''
for p in paths:
if 'cuda' in p:
idx = p.rfind('cuda-')
version = p[idx+5:idx+5+4].replace('/', '')
version = float(version)
break
binary_name = evaluate_cuda_setup()
binary_name = binary_name.replace('libbitsandbytes_cuda', '')
assert binary_name.startswith(str(version).replace('.', ''))
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