Test: Defaulted Native Enum Argument

Author: ax3l

tests/check-demo-stubs-generation.sh

@@ -61,6 +61,7 @@ run_stubgen() {
       ${NUMPY_FORMAT} \
       --ignore-invalid-expressions="\(anonymous namespace\)::(Enum|Unbound)|<demo\._bindings\.flawed_bindings\..*" \
       --enum-class-locations="ConsoleForegroundColor:demo._bindings.enum" \
+      --enum-class-locations="NativeColor:demo._bindings.enum" \
       --print-value-comments \
       --print-safe-value-reprs="Foo\(\d+\)" \
       --exit-code

tests/py-demo/bindings/src/modules/enum.cpp

@@ -35,5 +35,13 @@ void bind_enum_module(py::module&&m) {
         .value("Red", NativeColor::Red)
         .value("Blue", NativeColor::Blue)
         .finalize();
+
+    // Regression: https://github.com/pybind/pybind11-stubgen/issues/304
+    // Defaults referring to a py::native_enum must not be rendered in a form
+    // that triggers a parent-package lookup at stub import time.
+    m.def(
+        "accept_defaulted_native_enum",
+        [](const NativeColor &color) {},
+        py::arg("color") = NativeColor::Red);
 #endif
 }