Add --showlocals to all pytest configurations (#1286)

Add '--showlocals' option to pytest configurations across all projects
to ensure consistent behavior when displaying local variables in test
failures.

Pytest does not merge addopts across configuration files - it uses the
first configuration found. When running pytest from a subdirectory, the
local pytest.ini or pyproject.toml takes precedence over the root config.
To ensure --showlocals applies regardless of where pytest is invoked, we
add it to each project's configuration:

- Root pytest.ini: applies when running from repository root
- cuda_core/pytest.ini: applies when running from cuda_core directory
- cuda_bindings/pyproject.toml: appended to existing addopts
- cuda_pathfinder/pyproject.toml: added new pytest.ini_options section

This approach ensures uniform pytest behavior across all projects while
maintaining the ability to run tests from any directory.

Author: rwgk

cuda_bindings/pyproject.toml

@@ -69,5 +69,5 @@ repair-wheel-command = "delvewheel repair --namespace-pkg cuda -w {dest_dir} {wh
 
 [tool.pytest.ini_options]
 required_plugins = "pytest-benchmark"
-addopts = "--benchmark-disable"
+addopts = "--benchmark-disable --showlocals"
 norecursedirs = ["tests/cython", "examples"]

cuda_core/pytest.ini

@@ -3,4 +3,5 @@
 # SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE
 
 [pytest]
+addopts = --showlocals
 norecursedirs = cython

cuda_pathfinder/pyproject.toml

@@ -68,6 +68,9 @@ readme = { file = ["DESCRIPTION.rst"], content-type = "text/x-rst" }
 requires = ["setuptools>=64", "wheel"]
 build-backend = "setuptools.build_meta"
 
+[tool.pytest.ini_options]
+addopts = "--showlocals"
+
 [tool.ruff]
 line-length = 120
 preview = true

pytest.ini

@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 [pytest]
+addopts = --showlocals
 norecursedirs =
     cuda_bindings/examples
     cuda_core/examples