use pyo3::prelude::*; use pyo3::py_run; use pyo3::types::{IntoPyDict, PyDict, PyList, PySet, PyString, PyTuple, PyType}; use pyo3::PyCell; mod common; #[pyclass] struct InstanceMethod { member: i32, } #[pymethods] impl InstanceMethod { /// Test method fn method(&self) -> PyResult { Ok(self.member) } // Checks that &Self works fn add_other(&self, other: &Self) -> i32 { self.member + other.member } } #[test] fn instance_method() { let gil = Python::acquire_gil(); let py = gil.python(); let obj = PyCell::new(py, InstanceMethod { member: 42 }).unwrap(); let obj_ref = obj.borrow(); assert_eq!(obj_ref.method().unwrap(), 42); py_assert!(py, obj, "obj.method() == 42"); py_assert!(py, obj, "obj.add_other(obj) == 84"); py_assert!(py, obj, "obj.method.__doc__ == 'Test method'"); } #[pyclass] struct InstanceMethodWithArgs { member: i32, } #[pymethods] impl InstanceMethodWithArgs { fn method(&self, multiplier: i32) -> PyResult { Ok(self.member * multiplier) } } #[test] #[allow(dead_code)] fn instance_method_with_args() { let gil = Python::acquire_gil(); let py = gil.python(); let obj = PyCell::new(py, InstanceMethodWithArgs { member: 7 }).unwrap(); let obj_ref = obj.borrow(); assert_eq!(obj_ref.method(6).unwrap(), 42); let d = [("obj", obj)].into_py_dict(py); py.run("assert obj.method(3) == 21", None, Some(d)).unwrap(); py.run("assert obj.method(multiplier=6) == 42", None, Some(d)) .unwrap(); } #[pyclass] struct ClassMethod {} #[pymethods] impl ClassMethod { #[new] fn new() -> Self { ClassMethod {} } #[classmethod] /// Test class method. fn method(cls: &PyType) -> PyResult { Ok(format!("{}.method()!", cls.name())) } } #[test] fn class_method() { let gil = Python::acquire_gil(); let py = gil.python(); let d = [("C", py.get_type::())].into_py_dict(py); let run = |code| { py.run(code, None, Some(d)) .map_err(|e| e.print(py)) .unwrap() }; run("assert C.method() == 'ClassMethod.method()!'"); run("assert C().method() == 'ClassMethod.method()!'"); run("assert C.method.__doc__ == 'Test class method.'"); run("assert C().method.__doc__ == 'Test class method.'"); } #[pyclass] struct ClassMethodWithArgs {} #[pymethods] impl ClassMethodWithArgs { #[classmethod] fn method(cls: &PyType, input: &PyString) -> PyResult { Ok(format!("{}.method({})", cls.name(), input)) } } #[test] fn class_method_with_args() { let gil = Python::acquire_gil(); let py = gil.python(); let d = [("C", py.get_type::())].into_py_dict(py); py.run( "assert C.method('abc') == 'ClassMethodWithArgs.method(abc)'", None, Some(d), ) .unwrap(); } #[pyclass] struct StaticMethod {} #[pymethods] impl StaticMethod { #[new] fn new() -> Self { StaticMethod {} } #[staticmethod] /// Test static method. fn method(_py: Python) -> PyResult<&'static str> { Ok("StaticMethod.method()!") } } #[test] fn static_method() { let gil = Python::acquire_gil(); let py = gil.python(); assert_eq!(StaticMethod::method(py).unwrap(), "StaticMethod.method()!"); let d = [("C", py.get_type::())].into_py_dict(py); let run = |code| { py.run(code, None, Some(d)) .map_err(|e| e.print(py)) .unwrap() }; run("assert C.method() == 'StaticMethod.method()!'"); run("assert C().method() == 'StaticMethod.method()!'"); run("assert C.method.__doc__ == 'Test static method.'"); run("assert C().method.__doc__ == 'Test static method.'"); } #[pyclass] struct StaticMethodWithArgs {} #[pymethods] impl StaticMethodWithArgs { #[staticmethod] fn method(_py: Python, input: i32) -> PyResult { Ok(format!("0x{:x}", input)) } } #[test] fn static_method_with_args() { let gil = Python::acquire_gil(); let py = gil.python(); assert_eq!(StaticMethodWithArgs::method(py, 1234).unwrap(), "0x4d2"); let d = [("C", py.get_type::())].into_py_dict(py); py.run("assert C.method(1337) == '0x539'", None, Some(d)) .unwrap(); } #[pyclass] struct MethArgs {} #[pymethods] impl MethArgs { #[args(test)] fn get_optional(&self, test: Option) -> PyResult { Ok(test.unwrap_or(10)) } fn get_optional2(&self, test: Option) -> PyResult> { Ok(test) } #[args(test = "None")] fn get_optional3(&self, test: Option) -> PyResult> { Ok(test) } fn get_optional_positional( &self, _t1: Option, t2: Option, _t3: Option, ) -> PyResult> { Ok(t2) } #[args(test = "10")] fn get_default(&self, test: i32) -> PyResult { Ok(test) } #[args("*", test = 10)] fn get_kwarg(&self, test: i32) -> PyResult { Ok(test) } #[args(args = "*", kwargs = "**")] fn get_kwargs( &self, py: Python, args: &PyTuple, kwargs: Option<&PyDict>, ) -> PyResult { Ok([args.into(), kwargs.to_object(py)].to_object(py)) } #[args(args = "*", kwargs = "**")] fn get_pos_arg_kw( &self, py: Python, a: i32, args: &PyTuple, kwargs: Option<&PyDict>, ) -> PyObject { [a.to_object(py), args.into(), kwargs.to_object(py)].to_object(py) } #[args("*", a = 2, b = 3)] fn get_kwargs_only_with_defaults(&self, a: i32, b: i32) -> PyResult { Ok(a + b) } #[args("*", a, b)] fn get_kwargs_only(&self, a: i32, b: i32) -> PyResult { Ok(a + b) } #[args("*", a = 1, b)] fn get_kwargs_only_with_some_default(&self, a: i32, b: i32) -> PyResult { Ok(a + b) } #[args(a, b = 2, "*", c = 3)] fn get_pos_arg_kw_sep1(&self, a: i32, b: i32, c: i32) -> PyResult { Ok(a + b + c) } #[args(a, "*", b = 2, c = 3)] fn get_pos_arg_kw_sep2(&self, a: i32, b: i32, c: i32) -> PyResult { Ok(a + b + c) } #[args(kwargs = "**")] fn get_pos_kw(&self, py: Python, a: i32, kwargs: Option<&PyDict>) -> PyObject { [a.to_object(py), kwargs.to_object(py)].to_object(py) } // "args" can be anything that can be extracted from PyTuple #[args(args = "*")] fn args_as_vec(&self, args: Vec) -> i32 { args.iter().sum() } } #[test] fn meth_args() { let gil = Python::acquire_gil(); let py = gil.python(); let inst = Py::new(py, MethArgs {}).unwrap(); py_run!(py, inst, "assert inst.get_optional() == 10"); py_run!(py, inst, "assert inst.get_optional(100) == 100"); py_run!(py, inst, "assert inst.get_optional2() == None"); py_run!(py, inst, "assert inst.get_optional2(100) == 100"); py_run!(py, inst, "assert inst.get_optional3() == None"); py_run!(py, inst, "assert inst.get_optional3(100) == 100"); py_run!( py, inst, "assert inst.get_optional_positional(1, 2, 3) == 2" ); py_run!(py, inst, "assert inst.get_optional_positional(1) == None"); py_run!(py, inst, "assert inst.get_default() == 10"); py_run!(py, inst, "assert inst.get_default(100) == 100"); py_run!(py, inst, "assert inst.get_kwarg() == 10"); py_expect_exception!(py, inst, "inst.get_kwarg(100)", PyTypeError); py_run!(py, inst, "assert inst.get_kwarg(test=100) == 100"); py_run!(py, inst, "assert inst.get_kwargs() == [(), None]"); py_run!(py, inst, "assert inst.get_kwargs(1,2,3) == [(1,2,3), None]"); py_run!( py, inst, "assert inst.get_kwargs(t=1,n=2) == [(), {'t': 1, 'n': 2}]" ); py_run!( py, inst, "assert inst.get_kwargs(1,2,3,t=1,n=2) == [(1,2,3), {'t': 1, 'n': 2}]" ); py_run!(py, inst, "assert inst.get_pos_arg_kw(1) == [1, (), None]"); py_run!( py, inst, "assert inst.get_pos_arg_kw(1, 2, 3) == [1, (2, 3), None]" ); py_run!( py, inst, "assert inst.get_pos_arg_kw(1, b=2) == [1, (), {'b': 2}]" ); py_run!(py, inst, "assert inst.get_pos_arg_kw(a=1) == [1, (), None]"); py_expect_exception!(py, inst, "inst.get_pos_arg_kw()", PyTypeError); py_expect_exception!(py, inst, "inst.get_pos_arg_kw(1, a=1)", PyTypeError); py_expect_exception!(py, inst, "inst.get_pos_arg_kw(b=2)", PyTypeError); py_run!(py, inst, "assert inst.get_kwargs_only_with_defaults() == 5"); py_run!( py, inst, "assert inst.get_kwargs_only_with_defaults(a = 8) == 11" ); py_run!( py, inst, "assert inst.get_kwargs_only_with_defaults(b = 8) == 10" ); py_run!( py, inst, "assert inst.get_kwargs_only_with_defaults(a = 1, b = 1) == 2" ); py_run!( py, inst, "assert inst.get_kwargs_only_with_defaults(b = 1, a = 1) == 2" ); py_run!(py, inst, "assert inst.get_kwargs_only(a = 1, b = 1) == 2"); py_run!(py, inst, "assert inst.get_kwargs_only(b = 1, a = 1) == 2"); py_run!( py, inst, "assert inst.get_kwargs_only_with_some_default(a = 2, b = 1) == 3" ); py_run!( py, inst, "assert inst.get_kwargs_only_with_some_default(b = 1) == 2" ); py_run!( py, inst, "assert inst.get_kwargs_only_with_some_default(b = 1, a = 2) == 3" ); py_expect_exception!( py, inst, "inst.get_kwargs_only_with_some_default()", PyTypeError ); py_run!(py, inst, "assert inst.get_pos_arg_kw_sep1(1) == 6"); py_run!(py, inst, "assert inst.get_pos_arg_kw_sep1(1, 2) == 6"); py_run!( py, inst, "assert inst.get_pos_arg_kw_sep1(1, 2, c=13) == 16" ); py_run!( py, inst, "assert inst.get_pos_arg_kw_sep1(a=1, b=2, c=13) == 16" ); py_run!( py, inst, "assert inst.get_pos_arg_kw_sep1(b=2, c=13, a=1) == 16" ); py_run!( py, inst, "assert inst.get_pos_arg_kw_sep1(c=13, b=2, a=1) == 16" ); py_expect_exception!(py, inst, "inst.get_pos_arg_kw_sep1(1, 2, 3)", PyTypeError); py_run!(py, inst, "assert inst.get_pos_arg_kw_sep2(1) == 6"); py_run!( py, inst, "assert inst.get_pos_arg_kw_sep2(1, b=12, c=13) == 26" ); py_expect_exception!(py, inst, "inst.get_pos_arg_kw_sep2(1, 2)", PyTypeError); py_run!(py, inst, "assert inst.get_pos_kw(1, b=2) == [1, {'b': 2}]"); py_expect_exception!(py, inst, "inst.get_pos_kw(1,2)", PyTypeError); py_run!(py, inst, "assert inst.args_as_vec(1,2,3) == 6"); } #[pyclass] /// A class with "documentation". struct MethDocs { x: i32, } #[pymethods] impl MethDocs { /// A method with "documentation" as well. fn method(&self) -> PyResult { Ok(0) } #[getter] /// `int`: a very "important" member of 'this' instance. fn get_x(&self) -> PyResult { Ok(self.x) } } #[test] fn meth_doc() { let gil = Python::acquire_gil(); let py = gil.python(); let d = [("C", py.get_type::())].into_py_dict(py); let run = |code| { py.run(code, None, Some(d)) .map_err(|e| e.print(py)) .unwrap() }; run("assert C.__doc__ == 'A class with \"documentation\".'"); run("assert C.method.__doc__ == 'A method with \"documentation\" as well.'"); run("assert C.x.__doc__ == '`int`: a very \"important\" member of \\'this\\' instance.'"); } #[pyclass] struct MethodWithLifeTime {} #[pymethods] impl MethodWithLifeTime { fn set_to_list<'py>(&self, py: Python<'py>, set: &'py PySet) -> PyResult<&'py PyList> { let mut items = vec![]; for _ in 0..set.len() { items.push(set.pop().unwrap()); } let list = PyList::new(py, items); list.sort()?; Ok(list) } } #[test] fn method_with_lifetime() { let gil = Python::acquire_gil(); let py = gil.python(); let obj = PyCell::new(py, MethodWithLifeTime {}).unwrap(); py_run!( py, obj, "assert obj.set_to_list(set((1, 2, 3))) == [1, 2, 3]" ); } #[pyclass] struct MethodWithPyClassArg { #[pyo3(get)] value: i64, } #[pymethods] impl MethodWithPyClassArg { fn add(&self, other: &MethodWithPyClassArg) -> MethodWithPyClassArg { MethodWithPyClassArg { value: self.value + other.value, } } fn add_pyref(&self, other: PyRef) -> MethodWithPyClassArg { MethodWithPyClassArg { value: self.value + other.value, } } fn inplace_add(&self, other: &mut MethodWithPyClassArg) { other.value += self.value; } fn inplace_add_pyref(&self, mut other: PyRefMut) { other.value += self.value; } fn optional_add(&self, other: Option<&MethodWithPyClassArg>) -> MethodWithPyClassArg { MethodWithPyClassArg { value: self.value + other.map(|o| o.value).unwrap_or(10), } } fn optional_inplace_add(&self, other: Option<&mut MethodWithPyClassArg>) { if let Some(other) = other { other.value += self.value; } } } #[test] fn method_with_pyclassarg() { let gil = Python::acquire_gil(); let py = gil.python(); let obj1 = PyCell::new(py, MethodWithPyClassArg { value: 10 }).unwrap(); let obj2 = PyCell::new(py, MethodWithPyClassArg { value: 10 }).unwrap(); let objs = [("obj1", obj1), ("obj2", obj2)].into_py_dict(py); let run = |code| { py.run(code, None, Some(objs)) .map_err(|e| e.print(py)) .unwrap() }; run("obj = obj1.add(obj2); assert obj.value == 20"); run("obj = obj1.add_pyref(obj2); assert obj.value == 20"); run("obj = obj1.optional_add(); assert obj.value == 20"); run("obj = obj1.optional_add(obj2); assert obj.value == 20"); run("obj1.inplace_add(obj2); assert obj.value == 20"); run("obj1.inplace_add_pyref(obj2); assert obj2.value == 30"); run("obj1.optional_inplace_add(); assert obj2.value == 30"); run("obj1.optional_inplace_add(obj2); assert obj2.value == 40"); } #[pyclass] #[cfg(unix)] struct CfgStruct {} #[pyclass] #[cfg(not(unix))] struct CfgStruct {} #[pymethods] #[cfg(unix)] impl CfgStruct { fn unix_method(&self) -> &str { "unix" } #[cfg(not(unix))] fn never_compiled_method(&self) {} } #[pymethods] #[cfg(not(unix))] impl CfgStruct { fn not_unix_method(&self) -> &str { "not unix" } #[cfg(unix)] fn never_compiled_method(&self) {} } #[test] fn test_cfg_attrs() { let gil = Python::acquire_gil(); let py = gil.python(); let inst = Py::new(py, CfgStruct {}).unwrap(); #[cfg(unix)] { py_assert!(py, inst, "inst.unix_method() == 'unix'"); py_assert!(py, inst, "not hasattr(inst, 'not_unix_method')"); } #[cfg(not(unix))] { py_assert!(py, inst, "not hasattr(inst, 'unix_method')"); py_assert!(py, inst, "inst.not_unix_method() == 'not unix'"); } py_assert!(py, inst, "not hasattr(inst, 'never_compiled_method')"); } #[pyclass] #[derive(Default)] struct FromSequence { #[pyo3(get)] numbers: Vec, } #[pymethods] impl FromSequence { #[new] fn new(seq: Option<&pyo3::types::PySequence>) -> PyResult { if let Some(seq) = seq { Ok(FromSequence { numbers: seq.as_ref().extract::>()?, }) } else { Ok(FromSequence::default()) } } } #[test] fn test_from_sequence() { let gil = Python::acquire_gil(); let py = gil.python(); let typeobj = py.get_type::(); py_assert!(py, typeobj, "typeobj(range(0, 4)).numbers == [0, 1, 2, 3]") }