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Add test for a function accepting recarray (WIP)

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This commit is contained in:
Ivan Smirnov 2016-06-21 21:05:29 +01:00
parent f5b166d042
commit 669e14269d
2 changed files with 31 additions and 1 deletions
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22
example/example20.cpp
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@ -21,17 +21,29 @@ struct Struct {
float z;
};
std::ostream& operator<<(std::ostream& os, const Struct& v) {
return os << v.x << "," << v.y << "," << v.z;
}
struct PackedStruct {
bool x;
uint32_t y;
float z;
} __attribute__((packed));
std::ostream& operator<<(std::ostream& os, const PackedStruct& v) {
return os << v.x << "," << v.y << "," << v.z;
}
struct NestedStruct {
Struct a;
PackedStruct b;
} __attribute__((packed));
std::ostream& operator<<(std::ostream& os, const NestedStruct& v) {
return os << v.a << "|" << v.b;
}
template <typename T>
py::array mkarray_via_buffer(size_t n) {
return py::array(py::buffer_info(nullptr, sizeof(T),
@ -59,6 +71,13 @@ py::array_t<NestedStruct> create_nested(size_t n) {
return arr;
}
template <typename S>
void print_recarray(py::array_t<S> arr) {
auto buf = arr.request();
auto ptr = static_cast<S*>(buf.ptr);
for (size_t i = 0; i < buf.size; i++)
std::cout << ptr[i] << std::endl;
}
void print_format_descriptors() {
std::cout << py::format_descriptor<Struct>::value() << std::endl;
@ -75,4 +94,7 @@ void init_ex20(py::module &m) {
m.def("create_rec_packed", &create_recarray<PackedStruct>);
m.def("create_rec_nested", &create_nested);
m.def("print_format_descriptors", &print_format_descriptors);
m.def("print_rec_simple", &print_recarray<Struct>);
m.def("print_rec_packed", &print_recarray<PackedStruct>);
m.def("print_rec_nested", &print_recarray<NestedStruct>);
}

10
example/example20.py
View File

@ -3,7 +3,8 @@ from __future__ import print_function
import numpy as np
from example import (
create_rec_simple, create_rec_packed, create_rec_nested, print_format_descriptors
create_rec_simple, create_rec_packed, create_rec_nested, print_format_descriptors,
print_rec_simple, print_rec_packed, print_rec_nested
)
@ -28,6 +29,12 @@ for func, dtype in [(create_rec_simple, simple_dtype), (create_rec_packed, packe
check_eq(arr, [(False, 0, 0.0), (True, 1, 1.5), (False, 2, 3.0)], simple_dtype)
check_eq(arr, [(False, 0, 0.0), (True, 1, 1.5), (False, 2, 3.0)], packed_dtype)
# uncomment lines below to cause a segfault upon exit in Py_Finalize :(
# if dtype == simple_dtype:
# print_rec_simple(arr)
# else:
# print_rec_packed(arr)
nested_dtype = np.dtype([('a', simple_dtype), ('b', packed_dtype)])
@ -40,3 +47,4 @@ assert arr.dtype == nested_dtype
check_eq(arr, [((False, 0, 0.0), (True, 1, 1.5)),
((True, 1, 1.5), (False, 2, 3.0)),
((False, 2, 3.0), (True, 3, 4.5))], nested_dtype)
# print_rec_nested(arr)