119 lines
2.5 KiB
Rust
119 lines
2.5 KiB
Rust
#![cfg(feature = "macros")]
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use pyo3::{exceptions::PyValueError, prelude::*};
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mod common;
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#[pyclass]
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struct Foo {
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#[pyo3(get)]
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x: i32,
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}
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#[pyclass]
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struct Bar {
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#[pyo3(get)]
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x: i32,
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}
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#[pymethods]
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impl Foo {
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#[classattr]
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const MY_CONST: &'static str = "foobar";
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#[classattr]
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#[pyo3(name = "RENAMED_CONST")]
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const MY_CONST_2: &'static str = "foobar_2";
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#[classattr]
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fn a() -> i32 {
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5
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}
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#[classattr]
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#[pyo3(name = "B")]
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fn b() -> String {
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"bar".to_string()
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}
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#[classattr]
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fn bar() -> Bar {
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Bar { x: 2 }
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}
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#[classattr]
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fn a_foo() -> Foo {
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Foo { x: 1 }
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}
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#[classattr]
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fn a_foo_with_py(py: Python<'_>) -> Py<Foo> {
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Py::new(py, Foo { x: 1 }).unwrap()
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}
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}
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#[test]
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fn class_attributes() {
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Python::with_gil(|py| {
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let foo_obj = py.get_type::<Foo>();
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py_assert!(py, foo_obj, "foo_obj.MY_CONST == 'foobar'");
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py_assert!(py, foo_obj, "foo_obj.RENAMED_CONST == 'foobar_2'");
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py_assert!(py, foo_obj, "foo_obj.a == 5");
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py_assert!(py, foo_obj, "foo_obj.B == 'bar'");
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py_assert!(py, foo_obj, "foo_obj.a_foo.x == 1");
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py_assert!(py, foo_obj, "foo_obj.a_foo_with_py.x == 1");
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});
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}
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// Ignored because heap types are not immutable:
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// https://github.com/python/cpython/blob/master/Objects/typeobject.c#L3399-L3409
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#[test]
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#[ignore]
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fn class_attributes_are_immutable() {
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Python::with_gil(|py| {
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let foo_obj = py.get_type::<Foo>();
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py_expect_exception!(py, foo_obj, "foo_obj.a = 6", PyTypeError);
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});
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}
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#[pymethods]
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impl Bar {
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#[classattr]
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fn a_foo() -> Foo {
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Foo { x: 3 }
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}
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}
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#[test]
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fn recursive_class_attributes() {
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Python::with_gil(|py| {
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let foo_obj = py.get_type::<Foo>();
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let bar_obj = py.get_type::<Bar>();
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py_assert!(py, foo_obj, "foo_obj.a_foo.x == 1");
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py_assert!(py, foo_obj, "foo_obj.bar.x == 2");
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py_assert!(py, bar_obj, "bar_obj.a_foo.x == 3");
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});
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}
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#[test]
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#[should_panic(
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expected = "An error occurred while initializing `BrokenClass.fails_to_init`: \
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ValueError: failed to create class attribute"
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)]
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fn test_fallible_class_attribute() {
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#[pyclass]
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struct BrokenClass;
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#[pymethods]
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impl BrokenClass {
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#[classattr]
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fn fails_to_init() -> PyResult<i32> {
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Err(PyValueError::new_err("failed to create class attribute"))
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}
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}
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Python::with_gil(|py| {
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py.get_type::<BrokenClass>();
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})
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}
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