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json/test/src/unit-class_iterator.cpp
Théo DELRIEU be6b417c87 tweak SFINAE checks for internal types (see commit body) 
only check for public types (iterators, json_pointer)

for private ones (m_array.iterator, primitive_iterator) simply double
parentheses on relevant Catch checks
2017-01-21 16:14:22 +01:00

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/*
__ _____ _____ _____
__| | __| | | | JSON for Modern C++ (test suite)
| | |__ | | | | | | version 2.0.10
|_____|_____|_____|_|___| https://github.com/nlohmann/json
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
Copyright (c) 2013-2017 Niels Lohmann <http://nlohmann.me>.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include "catch.hpp"
#define private public
#include "json.hpp"
using nlohmann::json;
TEST_CASE("iterator class")
{
SECTION("construction")
{
SECTION("constructor")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it(&j);
}
SECTION("object")
{
json j(json::value_t::object);
json::iterator it(&j);
}
SECTION("array")
{
json j(json::value_t::array);
json::iterator it(&j);
}
}
SECTION("copy assignment")
{
json j(json::value_t::null);
json::iterator it(&j);
json::iterator it2(&j);
it2 = it;
}
}
SECTION("initialization")
{
SECTION("set_begin")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it(&j);
it.set_begin();
CHECK((it == j.begin()));
}
SECTION("object")
{
json j(json::value_t::object);
json::iterator it(&j);
it.set_begin();
CHECK((it == j.begin()));
}
SECTION("array")
{
json j(json::value_t::array);
json::iterator it(&j);
it.set_begin();
CHECK((it == j.begin()));
}
}
SECTION("set_end")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it(&j);
it.set_end();
CHECK((it == j.end()));
}
SECTION("object")
{
json j(json::value_t::object);
json::iterator it(&j);
it.set_end();
CHECK((it == j.end()));
}
SECTION("array")
{
json j(json::value_t::array);
json::iterator it(&j);
it.set_end();
CHECK((it == j.end()));
}
}
}
SECTION("element access")
{
SECTION("operator*")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it = j.begin();
CHECK_THROWS_AS(*it, std::out_of_range);
CHECK_THROWS_WITH(*it, "cannot get value");
}
SECTION("number")
{
json j(17);
json::iterator it = j.begin();
CHECK(*it == json(17));
it = j.end();
CHECK_THROWS_AS(*it, std::out_of_range);
CHECK_THROWS_WITH(*it, "cannot get value");
}
SECTION("object")
{
json j({{"foo", "bar"}});
json::iterator it = j.begin();
CHECK(*it == json("bar"));
}
SECTION("array")
{
json j({1, 2, 3, 4});
json::iterator it = j.begin();
CHECK(*it == json(1));
}
}
SECTION("operator->")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it = j.begin();
CHECK_THROWS_AS(it->type_name(), std::out_of_range);
CHECK_THROWS_WITH(it->type_name(), "cannot get value");
}
SECTION("number")
{
json j(17);
json::iterator it = j.begin();
CHECK(it->type_name() == "number");
it = j.end();
CHECK_THROWS_AS(it->type_name(), std::out_of_range);
CHECK_THROWS_WITH(it->type_name(), "cannot get value");
}
SECTION("object")
{
json j({{"foo", "bar"}});
json::iterator it = j.begin();
CHECK(it->type_name() == "string");
}
SECTION("array")
{
json j({1, 2, 3, 4});
json::iterator it = j.begin();
CHECK(it->type_name() == "number");
}
}
}
SECTION("increment/decrement")
{
SECTION("post-increment")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it = j.begin();
CHECK((it.m_it.primitive_iterator.m_it == 1));
it++;
CHECK((it.m_it.primitive_iterator.m_it != 0 and it.m_it.primitive_iterator.m_it != 1));
}
SECTION("number")
{
json j(17);
json::iterator it = j.begin();
CHECK((it.m_it.primitive_iterator.m_it == 0));
it++;
CHECK((it.m_it.primitive_iterator.m_it == 1));
it++;
CHECK((it.m_it.primitive_iterator.m_it != 0 and it.m_it.primitive_iterator.m_it != 1));
}
SECTION("object")
{
json j({{"foo", "bar"}});
json::iterator it = j.begin();
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->begin()));
it++;
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->end()));
}
SECTION("array")
{
json j({1, 2, 3, 4});
json::iterator it = j.begin();
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->begin()));
it++;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
it++;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
it++;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
it++;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->end()));
}
}
SECTION("pre-increment")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it = j.begin();
CHECK((it.m_it.primitive_iterator.m_it == 1));
++it;
CHECK((it.m_it.primitive_iterator.m_it != 0 and it.m_it.primitive_iterator.m_it != 1));
}
SECTION("number")
{
json j(17);
json::iterator it = j.begin();
CHECK((it.m_it.primitive_iterator.m_it == 0));
++it;
CHECK((it.m_it.primitive_iterator.m_it == 1));
++it;
CHECK((it.m_it.primitive_iterator.m_it != 0 and it.m_it.primitive_iterator.m_it != 1));
}
SECTION("object")
{
json j({{"foo", "bar"}});
json::iterator it = j.begin();
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->begin()));
++it;
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->end()));
}
SECTION("array")
{
json j({1, 2, 3, 4});
json::iterator it = j.begin();
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->begin()));
++it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
++it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
++it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
++it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->end()));
}
}
SECTION("post-decrement")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it = j.end();
CHECK((it.m_it.primitive_iterator.m_it == 1));
}
SECTION("number")
{
json j(17);
json::iterator it = j.end();
CHECK((it.m_it.primitive_iterator.m_it == 1));
it--;
CHECK((it.m_it.primitive_iterator.m_it == 0));
it--;
CHECK((it.m_it.primitive_iterator.m_it != 0 and it.m_it.primitive_iterator.m_it != 1));
}
SECTION("object")
{
json j({{"foo", "bar"}});
json::iterator it = j.end();
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->end()));
it--;
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->begin()));
}
SECTION("array")
{
json j({1, 2, 3, 4});
json::iterator it = j.end();
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->end()));
it--;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
it--;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
it--;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
it--;
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
}
}
SECTION("pre-decrement")
{
SECTION("null")
{
json j(json::value_t::null);
json::iterator it = j.end();
CHECK((it.m_it.primitive_iterator.m_it == 1));
}
SECTION("number")
{
json j(17);
json::iterator it = j.end();
CHECK((it.m_it.primitive_iterator.m_it == 1));
--it;
CHECK((it.m_it.primitive_iterator.m_it == 0));
--it;
CHECK((it.m_it.primitive_iterator.m_it != 0 and it.m_it.primitive_iterator.m_it != 1));
}
SECTION("object")
{
json j({{"foo", "bar"}});
json::iterator it = j.end();
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->end()));
--it;
CHECK((it.m_it.object_iterator == it.m_object->m_value.object->begin()));
}
SECTION("array")
{
json j({1, 2, 3, 4});
json::iterator it = j.end();
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->end()));
--it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
--it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
--it;
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
--it;
CHECK((it.m_it.array_iterator == it.m_object->m_value.array->begin()));
CHECK((it.m_it.array_iterator != it.m_object->m_value.array->end()));
}
}
}
}
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