pyo3/tests/test_slice.rs
2017-07-14 03:17:57 -07:00

59 lines
1.4 KiB
Rust

#![feature(proc_macro, specialization)]
#![allow(dead_code, unused_variables)]
extern crate pyo3;
use pyo3::*;
#[test]
fn test_basics() {
let gil = Python::acquire_gil();
let py = gil.python();
let v = PySlice::new(py, 1, 10, 2);
let indices = v.indices(100).unwrap();
assert_eq!(1, indices.start);
assert_eq!(10, indices.stop);
assert_eq!(2, indices.step);
assert_eq!(5, indices.slicelength);
}
#[py::class]
struct Test {
token: PyToken
}
#[py::proto]
impl<'p> PyMappingProtocol<'p> for Test
{
fn __getitem__(&self, idx: &PyObjectRef) -> PyResult<PyObject> {
if let Ok(slice) = idx.cast_as::<PySlice>() {
let indices = slice.indices(1000)?;
if indices.start == 100 && indices.stop == 200 && indices.step == 1 {
return Ok("slice".into_object(self.py()))
}
}
else if let Ok(idx) = idx.extract::<isize>() {
if idx == 1 {
return Ok("int".into_object(self.py()))
}
}
Err(PyErr::new::<exc::ValueError, _>(self.py(), "error"))
}
}
#[test]
fn test_cls_impl() {
let gil = Python::acquire_gil();
let py = gil.python();
let ob = py.init(|t| Test{token: t}).unwrap();
let d = PyDict::new(py);
d.set_item("ob", ob).unwrap();
py.run("assert ob[1] == 'int'", None, Some(d)).unwrap();
py.run("assert ob[100:200:1] == 'slice'", None, Some(d)).unwrap();
}