pyo3/tests/test_field_cfg.rs

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Rust
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#![cfg(feature = "macros")]
use pyo3::prelude::*;
#[pyclass]
struct CfgClass {
#[pyo3(get, set)]
#[cfg(any())]
pub a: u32,
#[pyo3(get, set)]
// This is always true
#[cfg(any(
target_family = "unix",
target_family = "windows",
target_family = "wasm"
))]
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pub b: u32,
}
#[test]
fn test_cfg() {
Python::with_gil(|py| {
let cfg = CfgClass { b: 3 };
let py_cfg = Py::new(py, cfg).unwrap();
assert!(py_cfg.bind(py).getattr("a").is_err());
let b: u32 = py_cfg.bind(py).getattr("b").unwrap().extract().unwrap();
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assert_eq!(b, 3);
});
}