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Verify that various macros do work without any PyO3 imports.
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lifthrasiir committed May 29, 2023
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123 changes: 123 additions & 0 deletions tests/test_no_imports.rs
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//! Tests that various macros work correctly without any PyO3 imports.
#![cfg(feature = "macros")]

#[pyo3::pyfunction]
#[pyo3(name = "identity", signature = (x = None))]
fn basic_function(py: pyo3::Python<'_>, x: Option<pyo3::PyObject>) -> pyo3::PyObject {
x.unwrap_or_else(|| py.None())
}

#[pyo3::pymodule]
fn basic_module(_py: pyo3::Python<'_>, m: &pyo3::types::PyModule) -> pyo3::PyResult<()> {
#[pyfn(m)]
fn answer() -> usize {
42
}

m.add_function(pyo3::wrap_pyfunction!(basic_function, m)?)?;

Ok(())
}

#[pyo3::pyclass]
struct BasicClass {
#[pyo3(get)]
v: usize,
#[pyo3(get, set)]
s: String,
}

#[pyo3::pymethods]
impl BasicClass {
#[classattr]
const OKAY: bool = true;

#[new]
fn new(arg: &pyo3::PyAny) -> pyo3::PyResult<Self> {
if let Ok(v) = arg.extract::<usize>() {
Ok(Self {
v,
s: "".to_string(),
})
} else {
Ok(Self {
v: 0,
s: arg.extract()?,
})
}
}

#[getter]
fn get_property(&self) -> usize {
self.v * 100
}

#[setter]
fn set_property(&mut self, value: usize) {
self.v = value / 100
}

/// Some documentation here
#[classmethod]
fn classmethod(cls: &pyo3::types::PyType) -> &pyo3::types::PyType {
cls
}

#[staticmethod]
fn staticmethod(py: pyo3::Python<'_>, v: usize) -> pyo3::Py<pyo3::PyAny> {
use pyo3::IntoPy;
v.to_string().into_py(py)
}

fn __add__(&self, other: usize) -> usize {
self.v + other
}

fn __iadd__(&mut self, other: pyo3::PyRef<'_, Self>) {
self.v += other.v;
self.s.push_str(&other.s);
}

fn mutate(mut slf: pyo3::PyRefMut<'_, Self>) {
slf.v += slf.v;
slf.s.push('!');
}
}

#[test]
fn test_basic() {
pyo3::Python::with_gil(|py| {
let module = pyo3::wrap_pymodule!(basic_module)(py);
let cls = py.get_type::<BasicClass>();
let d = pyo3::types::IntoPyDict::into_py_dict(
&[
("mod", module.as_ref(py).as_ref()),
("cls", cls.as_ref()),
("a", cls.call1((8,)).unwrap()),
("b", cls.call1(("foo",)).unwrap()),
],
py,
);

pyo3::py_run!(py, *d, "assert mod.answer() == 42");
pyo3::py_run!(py, *d, "assert mod.identity() is None");
pyo3::py_run!(py, *d, "v = object(); assert mod.identity(v) is v");
pyo3::py_run!(py, *d, "assert cls.OKAY");
pyo3::py_run!(py, *d, "assert (a.v, a.s) == (8, '')");
pyo3::py_run!(py, *d, "assert (b.v, b.s) == (0, 'foo')");
pyo3::py_run!(py, *d, "b.property = 314");
pyo3::py_run!(py, *d, "assert b.property == 300");
pyo3::py_run!(
py,
*d,
"assert cls.classmethod.__doc__ == 'Some documentation here'"
);
pyo3::py_run!(py, *d, "assert cls.classmethod() is cls");
pyo3::py_run!(py, *d, "assert cls.staticmethod(5) == '5'");
pyo3::py_run!(py, *d, "a.s = 'bar'; assert a.s == 'bar'");
pyo3::py_run!(py, *d, "a.mutate(); assert (a.v, a.s) == (16, 'bar!')");
pyo3::py_run!(py, *d, "assert a + 9 == 25");
pyo3::py_run!(py, *d, "b += a; assert (b.v, b.s) == (19, 'foobar!')");
});
}

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