pyo3/tests/test_class_attributes.rs

81 lines
1.4 KiB
Rust

use pyo3::prelude::*;
mod common;
#[pyclass]
struct Foo {
#[pyo3(get)]
x: i32,
}
#[pyclass]
struct Bar {
#[pyo3(get)]
x: i32,
}
#[pymethods]
impl Foo {
#[classattr]
const MY_CONST: &'static str = "foobar";
#[classattr]
fn a() -> i32 {
5
}
#[classattr]
#[name = "B"]
fn b() -> String {
"bar".to_string()
}
#[classattr]
fn bar() -> Bar {
Bar { x: 2 }
}
#[classattr]
fn foo() -> Foo {
Foo { x: 1 }
}
}
#[test]
fn class_attributes() {
let gil = Python::acquire_gil();
let py = gil.python();
let foo_obj = py.get_type::<Foo>();
py_assert!(py, foo_obj, "foo_obj.a == 5");
py_assert!(py, foo_obj, "foo_obj.B == 'bar'");
py_assert!(py, foo_obj, "foo_obj.MY_CONST == 'foobar'");
}
#[test]
fn class_attributes_are_immutable() {
let gil = Python::acquire_gil();
let py = gil.python();
let foo_obj = py.get_type::<Foo>();
py_expect_exception!(py, foo_obj, "foo_obj.a = 6", TypeError);
}
#[pymethods]
impl Bar {
#[classattr]
fn foo() -> Foo {
Foo { x: 3 }
}
}
#[test]
fn recursive_class_attributes() {
let gil = Python::acquire_gil();
let py = gil.python();
let foo_obj = py.get_type::<Foo>();
let bar_obj = py.get_type::<Bar>();
py_assert!(py, foo_obj, "foo_obj.foo.x == 1");
py_assert!(py, foo_obj, "foo_obj.bar.x == 2");
py_assert!(py, bar_obj, "bar_obj.foo.x == 3");
}