pyo3/tests/test_enum.rs

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#![cfg(feature = "macros")]
use pyo3::prelude::*;
use pyo3::{py_run, wrap_pyfunction};
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#[path = "../src/tests/common.rs"]
mod common;
#[pyclass]
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#[derive(Debug, PartialEq, Eq, Clone)]
pub enum MyEnum {
Variant,
OtherVariant,
}
#[test]
fn test_enum_class_attr() {
Python::with_gil(|py| {
let my_enum = py.get_type::<MyEnum>();
let var = Py::new(py, MyEnum::Variant).unwrap();
py_assert!(py, my_enum var, "my_enum.Variant == var");
})
}
#[pyfunction]
fn return_enum() -> MyEnum {
MyEnum::Variant
}
#[test]
fn test_return_enum() {
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Python::with_gil(|py| {
let f = wrap_pyfunction!(return_enum)(py).unwrap();
let mynum = py.get_type::<MyEnum>();
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py_run!(py, f mynum, "assert f() == mynum.Variant")
});
}
#[pyfunction]
fn enum_arg(e: MyEnum) {
assert_eq!(MyEnum::OtherVariant, e)
}
#[test]
fn test_enum_arg() {
Python::with_gil(|py| {
let f = wrap_pyfunction!(enum_arg)(py).unwrap();
let mynum = py.get_type::<MyEnum>();
py_run!(py, f mynum, "f(mynum.OtherVariant)")
})
}
#[test]
fn test_enum_eq_enum() {
Python::with_gil(|py| {
let var1 = Py::new(py, MyEnum::Variant).unwrap();
let var2 = Py::new(py, MyEnum::Variant).unwrap();
let other_var = Py::new(py, MyEnum::OtherVariant).unwrap();
py_assert!(py, var1 var2, "var1 == var2");
py_assert!(py, var1 other_var, "var1 != other_var");
py_assert!(py, var1 var2, "(var1 != var2) == False");
})
}
#[test]
fn test_enum_eq_incomparable() {
Python::with_gil(|py| {
let var1 = Py::new(py, MyEnum::Variant).unwrap();
py_assert!(py, var1, "(var1 == 'foo') == False");
py_assert!(py, var1, "(var1 != 'foo') == True");
})
}
#[pyclass]
enum CustomDiscriminant {
One = 1,
Two = 2,
}
#[test]
fn test_custom_discriminant() {
Python::with_gil(|py| {
#[allow(non_snake_case)]
let CustomDiscriminant = py.get_type::<CustomDiscriminant>();
let one = Py::new(py, CustomDiscriminant::One).unwrap();
let two = Py::new(py, CustomDiscriminant::Two).unwrap();
py_run!(py, CustomDiscriminant one two, r#"
assert CustomDiscriminant.One == one
assert CustomDiscriminant.Two == two
assert one != two
"#);
})
}
#[test]
fn test_enum_to_int() {
Python::with_gil(|py| {
let one = Py::new(py, CustomDiscriminant::One).unwrap();
py_assert!(py, one, "int(one) == 1");
let v = Py::new(py, MyEnum::Variant).unwrap();
let v_value = MyEnum::Variant as isize;
py_run!(py, v v_value, "int(v) == v_value");
})
}
#[test]
fn test_enum_compare_int() {
Python::with_gil(|py| {
let one = Py::new(py, CustomDiscriminant::One).unwrap();
py_run!(
py,
one,
r#"
assert one == 1
assert 1 == one
assert one != 2
"#
)
})
}
#[pyclass]
#[repr(u8)]
enum SmallEnum {
V = 1,
}
#[test]
fn test_enum_compare_int_no_throw_when_overflow() {
Python::with_gil(|py| {
let v = Py::new(py, SmallEnum::V).unwrap();
py_assert!(py, v, "v != 1<<30")
})
}
#[pyclass]
#[repr(usize)]
#[allow(clippy::enum_clike_unportable_variant)]
enum BigEnum {
V = usize::MAX,
}
#[test]
fn test_big_enum_no_overflow() {
Python::with_gil(|py| {
let usize_max = usize::MAX;
let v = Py::new(py, BigEnum::V).unwrap();
py_assert!(py, usize_max v, "v == usize_max");
py_assert!(py, usize_max v, "int(v) == usize_max");
})
}
#[pyclass]
#[repr(u16, align(8))]
enum TestReprParse {
V,
}
#[test]
fn test_repr_parse() {
assert_eq!(std::mem::align_of::<TestReprParse>(), 8);
}
#[pyclass(name = "MyEnum")]
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#[derive(Debug, PartialEq, Eq, Clone)]
pub enum RenameEnum {
Variant,
}
#[test]
fn test_rename_enum_repr_correct() {
Python::with_gil(|py| {
let var1 = Py::new(py, RenameEnum::Variant).unwrap();
py_assert!(py, var1, "repr(var1) == 'MyEnum.Variant'");
})
}
#[pyclass]
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#[derive(Debug, PartialEq, Eq, Clone)]
pub enum RenameVariantEnum {
#[pyo3(name = "VARIANT")]
Variant,
}
#[test]
fn test_rename_variant_repr_correct() {
Python::with_gil(|py| {
let var1 = Py::new(py, RenameVariantEnum::Variant).unwrap();
py_assert!(py, var1, "repr(var1) == 'RenameVariantEnum.VARIANT'");
})
}
#[pyclass(rename_all = "SCREAMING_SNAKE_CASE")]
#[allow(clippy::enum_variant_names)]
enum RenameAllVariantsEnum {
VariantOne,
VariantTwo,
#[pyo3(name = "VariantThree")]
VariantFour,
}
#[test]
fn test_renaming_all_enum_variants() {
Python::with_gil(|py| {
let enum_obj = py.get_type::<RenameAllVariantsEnum>();
py_assert!(py, enum_obj, "enum_obj.VARIANT_ONE == enum_obj.VARIANT_ONE");
py_assert!(py, enum_obj, "enum_obj.VARIANT_TWO == enum_obj.VARIANT_TWO");
py_assert!(
py,
enum_obj,
"enum_obj.VariantThree == enum_obj.VariantThree"
);
});
}