485 lines
13 KiB
Rust
485 lines
13 KiB
Rust
#![cfg(feature = "macros")]
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use pyo3::exceptions::PyValueError;
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use pyo3::prelude::*;
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use pyo3::types::{PyDict, PyString, PyTuple};
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use pyo3::PyMappingProtocol;
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#[macro_use]
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mod common;
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/// Helper function that concatenates the error message from
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/// each error in the traceback into a single string that can
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/// be tested.
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fn extract_traceback(py: Python, mut error: PyErr) -> String {
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let mut error_msg = error.to_string();
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while let Some(cause) = error.cause(py) {
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error_msg.push_str(": ");
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error_msg.push_str(&cause.to_string());
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error = cause
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}
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error_msg
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}
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#[derive(Debug, FromPyObject)]
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pub struct A<'a> {
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#[pyo3(attribute)]
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s: String,
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#[pyo3(item)]
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t: &'a PyString,
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#[pyo3(attribute("foo"))]
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p: &'a PyAny,
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}
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#[pyclass]
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pub struct PyA {
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#[pyo3(get)]
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s: String,
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#[pyo3(get)]
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foo: Option<String>,
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}
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#[pyproto]
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impl PyMappingProtocol for PyA {
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fn __getitem__(&self, key: String) -> pyo3::PyResult<String> {
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if key == "t" {
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Ok("bar".into())
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} else {
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Err(PyValueError::new_err("Failed"))
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}
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}
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}
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#[test]
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fn test_named_fields_struct() {
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Python::with_gil(|py| {
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let pya = PyA {
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s: "foo".into(),
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foo: None,
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};
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let py_c = Py::new(py, pya).unwrap();
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let a: A = FromPyObject::extract(py_c.as_ref(py)).expect("Failed to extract A from PyA");
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assert_eq!(a.s, "foo");
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assert_eq!(a.t.to_string_lossy(), "bar");
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assert!(a.p.is_none());
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});
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}
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#[derive(Debug, FromPyObject)]
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#[pyo3(transparent)]
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pub struct B {
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test: String,
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}
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#[test]
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fn test_transparent_named_field_struct() {
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Python::with_gil(|py| {
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let test = "test".into_py(py);
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let b: B = FromPyObject::extract(test.as_ref(py)).expect("Failed to extract B from String");
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assert_eq!(b.test, "test");
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let test: PyObject = 1.into_py(py);
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let b = B::extract(test.as_ref(py));
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assert!(b.is_err());
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});
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}
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#[derive(Debug, FromPyObject)]
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#[pyo3(transparent)]
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pub struct D<T> {
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test: T,
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}
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#[test]
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fn test_generic_transparent_named_field_struct() {
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Python::with_gil(|py| {
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let test = "test".into_py(py);
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let d: D<String> =
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D::extract(test.as_ref(py)).expect("Failed to extract D<String> from String");
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assert_eq!(d.test, "test");
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let test = 1usize.into_py(py);
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let d: D<usize> =
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D::extract(test.as_ref(py)).expect("Failed to extract D<usize> from String");
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assert_eq!(d.test, 1);
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});
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}
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#[derive(Debug, FromPyObject)]
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pub struct E<T, T2> {
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test: T,
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test2: T2,
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}
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#[pyclass]
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#[derive(Clone)]
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pub struct PyE {
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#[pyo3(get)]
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test: String,
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#[pyo3(get)]
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test2: usize,
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}
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#[test]
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fn test_generic_named_fields_struct() {
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Python::with_gil(|py| {
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let pye = PyE {
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test: "test".into(),
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test2: 2,
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}
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.into_py(py);
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let e: E<String, usize> =
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E::extract(pye.as_ref(py)).expect("Failed to extract E<String, usize> from PyE");
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assert_eq!(e.test, "test");
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assert_eq!(e.test2, 2);
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let e = E::<usize, usize>::extract(pye.as_ref(py));
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assert!(e.is_err());
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});
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}
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#[derive(Debug, FromPyObject)]
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pub struct C {
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#[pyo3(attribute("test"))]
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test: String,
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}
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#[test]
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fn test_named_field_with_ext_fn() {
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Python::with_gil(|py| {
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let pyc = PyE {
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test: "foo".into(),
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test2: 0,
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}
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.into_py(py);
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let c = C::extract(pyc.as_ref(py)).expect("Failed to extract C from PyE");
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assert_eq!(c.test, "foo");
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});
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}
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#[derive(Debug, FromPyObject)]
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pub struct Tuple(String, usize);
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#[test]
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fn test_tuple_struct() {
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Python::with_gil(|py| {
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let tup = PyTuple::new(py, &[1.into_py(py), "test".into_py(py)]);
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let tup = Tuple::extract(tup.as_ref());
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assert!(tup.is_err());
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let tup = PyTuple::new(py, &["test".into_py(py), 1.into_py(py)]);
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let tup = Tuple::extract(tup.as_ref()).expect("Failed to extract Tuple from PyTuple");
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assert_eq!(tup.0, "test");
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assert_eq!(tup.1, 1);
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});
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}
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#[derive(Debug, FromPyObject)]
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pub struct TransparentTuple(String);
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#[test]
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fn test_transparent_tuple_struct() {
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Python::with_gil(|py| {
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let tup: PyObject = 1.into_py(py);
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let tup = TransparentTuple::extract(tup.as_ref(py));
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assert!(tup.is_err());
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let test = "test".into_py(py);
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let tup = TransparentTuple::extract(test.as_ref(py))
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.expect("Failed to extract TransparentTuple from PyTuple");
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assert_eq!(tup.0, "test");
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});
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}
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#[pyclass]
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struct PyBaz {
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#[pyo3(get)]
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tup: (String, String),
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#[pyo3(get)]
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e: PyE,
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}
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#[derive(Debug, FromPyObject)]
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#[allow(dead_code)]
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struct Baz<U, T> {
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e: E<U, T>,
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tup: Tuple,
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}
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#[test]
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fn test_struct_nested_type_errors() {
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Python::with_gil(|py| {
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let pybaz = PyBaz {
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tup: ("test".into(), "test".into()),
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e: PyE {
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test: "foo".into(),
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test2: 0,
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},
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}
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.into_py(py);
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let test: PyResult<Baz<String, usize>> = FromPyObject::extract(pybaz.as_ref(py));
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assert!(test.is_err());
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assert_eq!(
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extract_traceback(py,test.unwrap_err()),
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"TypeError: failed to extract field Baz.tup: TypeError: failed to extract field Tuple.1: \
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TypeError: \'str\' object cannot be interpreted as an integer"
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);
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});
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}
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#[test]
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fn test_struct_nested_type_errors_with_generics() {
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Python::with_gil(|py| {
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let pybaz = PyBaz {
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tup: ("test".into(), "test".into()),
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e: PyE {
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test: "foo".into(),
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test2: 0,
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},
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}
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.into_py(py);
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let test: PyResult<Baz<usize, String>> = FromPyObject::extract(pybaz.as_ref(py));
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assert!(test.is_err());
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assert_eq!(
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extract_traceback(py, test.unwrap_err()),
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"TypeError: failed to extract field Baz.e: TypeError: failed to extract field E.test: \
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TypeError: \'str\' object cannot be interpreted as an integer",
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);
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});
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}
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#[test]
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fn test_transparent_struct_error_message() {
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Python::with_gil(|py| {
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let tup: PyObject = 1.into_py(py);
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let tup = B::extract(tup.as_ref(py));
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assert!(tup.is_err());
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assert_eq!(
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extract_traceback(py,tup.unwrap_err()),
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"TypeError: failed to extract field B.test: TypeError: \'int\' object cannot be converted \
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to \'PyString\'"
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);
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});
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}
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#[test]
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fn test_tuple_struct_error_message() {
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Python::with_gil(|py| {
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let tup: PyObject = (1, "test").into_py(py);
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let tup = Tuple::extract(tup.as_ref(py));
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assert!(tup.is_err());
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assert_eq!(
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extract_traceback(py, tup.unwrap_err()),
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"TypeError: failed to extract field Tuple.0: TypeError: \'int\' object cannot be \
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converted to \'PyString\'"
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);
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});
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}
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#[test]
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fn test_transparent_tuple_error_message() {
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Python::with_gil(|py| {
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let tup: PyObject = 1.into_py(py);
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let tup = TransparentTuple::extract(tup.as_ref(py));
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assert!(tup.is_err());
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assert_eq!(
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extract_traceback(py, tup.unwrap_err()),
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"TypeError: failed to extract inner field of TransparentTuple: 'int' object \
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cannot be converted to 'PyString'",
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);
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});
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}
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#[derive(Debug, FromPyObject)]
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pub enum Foo<'a> {
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TupleVar(usize, String),
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StructVar {
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test: &'a PyString,
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},
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#[pyo3(transparent)]
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TransparentTuple(usize),
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#[pyo3(transparent)]
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TransparentStructVar {
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a: Option<String>,
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},
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StructVarGetAttrArg {
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#[pyo3(attribute("bla"))]
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a: bool,
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},
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StructWithGetItem {
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#[pyo3(item)]
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a: String,
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},
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StructWithGetItemArg {
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#[pyo3(item("foo"))]
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a: String,
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},
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}
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#[pyclass]
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pub struct PyBool {
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#[pyo3(get)]
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bla: bool,
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}
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#[test]
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fn test_enum() {
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Python::with_gil(|py| {
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let tup = PyTuple::new(py, &[1.into_py(py), "test".into_py(py)]);
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let f = Foo::extract(tup.as_ref()).expect("Failed to extract Foo from tuple");
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match f {
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Foo::TupleVar(test, test2) => {
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assert_eq!(test, 1);
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assert_eq!(test2, "test");
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}
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_ => panic!("Expected extracting Foo::TupleVar, got {:?}", f),
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}
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let pye = PyE {
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test: "foo".into(),
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test2: 0,
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}
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.into_py(py);
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let f = Foo::extract(pye.as_ref(py)).expect("Failed to extract Foo from PyE");
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match f {
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Foo::StructVar { test } => assert_eq!(test.to_string_lossy(), "foo"),
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_ => panic!("Expected extracting Foo::StructVar, got {:?}", f),
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}
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let int: PyObject = 1.into_py(py);
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let f = Foo::extract(int.as_ref(py)).expect("Failed to extract Foo from int");
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match f {
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Foo::TransparentTuple(test) => assert_eq!(test, 1),
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_ => panic!("Expected extracting Foo::TransparentTuple, got {:?}", f),
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}
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let none = py.None();
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let f = Foo::extract(none.as_ref(py)).expect("Failed to extract Foo from int");
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match f {
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Foo::TransparentStructVar { a } => assert!(a.is_none()),
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_ => panic!("Expected extracting Foo::TransparentStructVar, got {:?}", f),
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}
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let pybool = PyBool { bla: true }.into_py(py);
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let f = Foo::extract(pybool.as_ref(py)).expect("Failed to extract Foo from PyBool");
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match f {
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Foo::StructVarGetAttrArg { a } => assert!(a),
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_ => panic!("Expected extracting Foo::StructVarGetAttrArg, got {:?}", f),
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}
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let dict = PyDict::new(py);
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dict.set_item("a", "test").expect("Failed to set item");
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let f = Foo::extract(dict.as_ref()).expect("Failed to extract Foo from dict");
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match f {
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Foo::StructWithGetItem { a } => assert_eq!(a, "test"),
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_ => panic!("Expected extracting Foo::StructWithGetItem, got {:?}", f),
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}
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let dict = PyDict::new(py);
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dict.set_item("foo", "test").expect("Failed to set item");
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let f = Foo::extract(dict.as_ref()).expect("Failed to extract Foo from dict");
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match f {
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Foo::StructWithGetItemArg { a } => assert_eq!(a, "test"),
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_ => panic!("Expected extracting Foo::StructWithGetItemArg, got {:?}", f),
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}
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});
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}
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#[test]
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fn test_enum_error() {
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Python::with_gil(|py| {
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let dict = PyDict::new(py);
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let err = Foo::extract(dict.as_ref()).unwrap_err();
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assert_eq!(
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err.to_string(),
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"\
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TypeError: failed to extract enum Foo ('TupleVar | StructVar | TransparentTuple | TransparentStructVar | StructVarGetAttrArg | StructWithGetItem | StructWithGetItemArg')
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- variant TupleVar (TupleVar): 'dict' object cannot be converted to 'PyTuple'
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- variant StructVar (StructVar): 'dict' object has no attribute 'test'
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- variant TransparentTuple (TransparentTuple): 'dict' object cannot be interpreted as an integer
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- variant TransparentStructVar (TransparentStructVar): failed to extract field Foo :: TransparentStructVar.a
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- variant StructVarGetAttrArg (StructVarGetAttrArg): 'dict' object has no attribute 'bla'
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- variant StructWithGetItem (StructWithGetItem): 'a'
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- variant StructWithGetItemArg (StructWithGetItemArg): 'foo'"
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);
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});
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}
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#[derive(Debug, FromPyObject)]
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enum EnumWithCatchAll<'a> {
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#[pyo3(transparent)]
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Foo(Foo<'a>),
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#[pyo3(transparent)]
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CatchAll(&'a PyAny),
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}
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#[test]
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fn test_enum_catch_all() {
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Python::with_gil(|py| {
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let dict = PyDict::new(py);
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let f = EnumWithCatchAll::extract(dict.as_ref())
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.expect("Failed to extract EnumWithCatchAll from dict");
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match f {
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EnumWithCatchAll::CatchAll(any) => {
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let d = <&PyDict>::extract(any).expect("Expected pydict");
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assert!(d.is_empty());
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}
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_ => panic!(
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"Expected extracting EnumWithCatchAll::CatchAll, got {:?}",
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f
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),
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}
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});
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}
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#[derive(Debug, FromPyObject)]
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pub enum Bar {
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#[pyo3(annotation = "str")]
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A(String),
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#[pyo3(annotation = "uint")]
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B(usize),
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#[pyo3(annotation = "int", transparent)]
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C(isize),
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}
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#[test]
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fn test_err_rename() {
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Python::with_gil(|py| {
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let dict = PyDict::new(py);
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let f = Bar::extract(dict.as_ref());
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assert!(f.is_err());
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assert_eq!(
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f.unwrap_err().to_string(),
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"\
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TypeError: failed to extract enum Bar (\'str | uint | int\')
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- variant A (str): \'dict\' object cannot be converted to \'PyString\'
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- variant B (uint): \'dict\' object cannot be interpreted as an integer
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- variant C (int): \'dict\' object cannot be interpreted as an integer"
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);
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});
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}
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#[derive(Debug, FromPyObject)]
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pub struct Zap {
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#[pyo3(item)]
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name: String,
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#[pyo3(from_py_with = "PyAny::len", item("my_object"))]
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some_object_length: usize,
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}
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#[test]
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fn test_from_py_with() {
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Python::with_gil(|py| {
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let py_zap = py
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.eval(
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r#"{"name": "whatever", "my_object": [1, 2, 3]}"#,
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None,
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None,
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)
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.expect("failed to create dict");
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let zap = Zap::extract(py_zap).unwrap();
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assert_eq!(zap.name, "whatever");
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assert_eq!(zap.some_object_length, 3usize);
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});
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}
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