Fix PicklingError in subprocess spawn by moving fixtures to conftest.py

Co-authored-by: lostmsu <239520+lostmsu@users.noreply.github.com>

Author: Copilot

tests/conftest.py

@@ -0,0 +1,25 @@
+from pathlib import Path
+from subprocess import check_call
+
+import pytest
+
+NETCORE_VERSION = "net10.0"
+
+
+@pytest.fixture(scope="session")
+def example_netstandard(tmp_path_factory: pytest.TempPathFactory) -> Path:
+    return build_example(tmp_path_factory, "netstandard2.0")
+
+
+@pytest.fixture(scope="session")
+def example_netcore(tmp_path_factory: pytest.TempPathFactory) -> Path:
+    return build_example(tmp_path_factory, NETCORE_VERSION)
+
+
+def build_example(tmp_path_factory: pytest.TempPathFactory, framework: str) -> Path:
+    out = tmp_path_factory.mktemp(f"example-{framework}")
+    proj_path = Path(__file__).parent.parent / "example" / "example.csproj"
+
+    _ = check_call(["dotnet", "build", str(proj_path), "-o", str(out), "-f", framework])
+
+    return out

tests/test_common.py

@@ -1,31 +1,9 @@
 import shutil
 import sys
 from pathlib import Path
-from subprocess import check_call
 
 import pytest
 
-NETCORE_VERSION = "net10.0"
-
-
-@pytest.fixture(scope="session")
-def example_netstandard(tmp_path_factory: pytest.TempPathFactory) -> Path:
-    return build_example(tmp_path_factory, "netstandard2.0")
-
-
-@pytest.fixture(scope="session")
-def example_netcore(tmp_path_factory: pytest.TempPathFactory) -> Path:
-    return build_example(tmp_path_factory, NETCORE_VERSION)
-
-
-def build_example(tmp_path_factory: pytest.TempPathFactory, framework: str) -> Path:
-    out = tmp_path_factory.mktemp(f"example-{framework}")
-    proj_path = Path(__file__).parent.parent / "example" / "example.csproj"
-
-    _ = check_call(["dotnet", "build", str(proj_path), "-o", str(out), "-f", framework])
-
-    return out
-
 
 def test_mono(example_netstandard: Path):
     from clr_loader import get_mono