memgraph/tests/unit/query_procedure_py_module.cpp
Lovro Lugovic 5953f07be3 Add conversion of py::Object to mgp_value
Reviewers: teon.banek, ipaljak, mferencevic

Reviewed By: teon.banek, ipaljak

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D2667
2020-02-14 16:08:20 +01:00

115 lines
4.5 KiB
C++

#include <gtest/gtest.h>
#include <string>
#include "query/procedure/mg_procedure_impl.hpp"
#include "query/procedure/py_module.hpp"
TEST(PyModule, MgpValueToPyObject) {
mgp_memory memory{utils::NewDeleteResource()};
auto *list = mgp_list_make_empty(42, &memory);
{
// Create a list: [null, false, true, 42, 0.1, "some text"]
auto primitive_values = {mgp_value_make_null(&memory),
mgp_value_make_bool(0, &memory),
mgp_value_make_bool(1, &memory),
mgp_value_make_int(42, &memory),
mgp_value_make_double(0.1, &memory),
mgp_value_make_string("some text", &memory)};
for (auto *val : primitive_values) {
mgp_list_append(list, val);
mgp_value_destroy(val);
}
}
auto *list_val = mgp_value_make_list(list);
auto *map = mgp_map_make_empty(&memory);
mgp_map_insert(map, "list", list_val);
mgp_value_destroy(list_val);
auto *map_val = mgp_value_make_map(map);
auto gil = py::EnsureGIL();
auto py_dict = query::procedure::MgpValueToPyObject(*map_val);
mgp_value_destroy(map_val);
// We should now have in Python:
// {"list": [None, False, True, 42, 0.1, "some text"]}
ASSERT_TRUE(PyDict_Check(py_dict));
EXPECT_EQ(PyDict_Size(py_dict), 1);
PyObject *key = nullptr;
PyObject *value = nullptr;
Py_ssize_t pos = 0;
while (PyDict_Next(py_dict, &pos, &key, &value)) {
ASSERT_TRUE(PyUnicode_Check(key));
EXPECT_EQ(std::string(PyUnicode_AsUTF8(key)), "list");
ASSERT_TRUE(PyList_Check(value));
ASSERT_EQ(PyList_Size(value), 6);
EXPECT_EQ(PyList_GetItem(value, 0), Py_None);
EXPECT_EQ(PyList_GetItem(value, 1), Py_False);
EXPECT_EQ(PyList_GetItem(value, 2), Py_True);
auto *py_long = PyList_GetItem(value, 3);
ASSERT_TRUE(PyLong_Check(py_long));
EXPECT_EQ(PyLong_AsLong(py_long), 42);
auto *py_float = PyList_GetItem(value, 4);
ASSERT_TRUE(PyFloat_Check(py_float));
EXPECT_EQ(PyFloat_AsDouble(py_float), 0.1);
auto *py_str = PyList_GetItem(value, 5);
ASSERT_TRUE(PyUnicode_Check(py_str));
EXPECT_EQ(std::string(PyUnicode_AsUTF8(py_str)), "some text");
}
// TODO: Vertex, Edge and Path values
}
TEST(PyModule, PyObjectToMgpValue) {
mgp_memory memory{utils::NewDeleteResource()};
auto gil = py::EnsureGIL();
py::Object py_value{Py_BuildValue("[i f s (i f s) {s i s f}]", 1, 1.0, "one",
2, 2.0, "two", "three", 3, "four", 4.0)};
mgp_value *value = query::procedure::PyObjectToMgpValue(py_value, &memory);
ASSERT_TRUE(mgp_value_is_list(value));
const mgp_list *list1 = mgp_value_get_list(value);
EXPECT_EQ(mgp_list_size(list1), 5);
ASSERT_TRUE(mgp_value_is_int(mgp_list_at(list1, 0)));
EXPECT_EQ(mgp_value_get_int(mgp_list_at(list1, 0)), 1);
ASSERT_TRUE(mgp_value_is_double(mgp_list_at(list1, 1)));
EXPECT_EQ(mgp_value_get_double(mgp_list_at(list1, 1)), 1.0);
ASSERT_TRUE(mgp_value_is_string(mgp_list_at(list1, 2)));
EXPECT_STREQ(mgp_value_get_string(mgp_list_at(list1, 2)), "one");
ASSERT_TRUE(mgp_value_is_list(mgp_list_at(list1, 3)));
const mgp_list *list2 = mgp_value_get_list(mgp_list_at(list1, 3));
EXPECT_EQ(mgp_list_size(list2), 3);
ASSERT_TRUE(mgp_value_is_int(mgp_list_at(list2, 0)));
EXPECT_EQ(mgp_value_get_int(mgp_list_at(list2, 0)), 2);
ASSERT_TRUE(mgp_value_is_double(mgp_list_at(list2, 1)));
EXPECT_EQ(mgp_value_get_double(mgp_list_at(list2, 1)), 2.0);
ASSERT_TRUE(mgp_value_is_string(mgp_list_at(list2, 2)));
EXPECT_STREQ(mgp_value_get_string(mgp_list_at(list2, 2)), "two");
ASSERT_TRUE(mgp_value_is_map(mgp_list_at(list1, 4)));
const mgp_map *map = mgp_value_get_map(mgp_list_at(list1, 4));
EXPECT_EQ(mgp_map_size(map), 2);
const mgp_value *v1 = mgp_map_at(map, "three");
ASSERT_TRUE(mgp_value_is_int(v1));
EXPECT_EQ(mgp_value_get_int(v1), 3);
const mgp_value *v2 = mgp_map_at(map, "four");
ASSERT_TRUE(mgp_value_is_double(v2));
EXPECT_EQ(mgp_value_get_double(v2), 4.0);
}
int main(int argc, char **argv) {
::testing::InitGoogleTest(&argc, argv);
// Initialize Python
auto *program_name = Py_DecodeLocale(argv[0], nullptr);
CHECK(program_name);
// Set program name, so Python can find its way to runtime libraries relative
// to executable.
Py_SetProgramName(program_name);
Py_InitializeEx(0 /* = initsigs */);
PyEval_InitThreads();
int test_result;
Py_BEGIN_ALLOW_THREADS;
test_result = RUN_ALL_TESTS();
Py_END_ALLOW_THREADS;
// Shutdown Python
Py_Finalize();
PyMem_RawFree(program_name);
return test_result;
}