json/test/src/unit-comparison.cpp
Niels Lohmann ac3922c7aa
Merge branch 'develop' of https://github.com/nlohmann/json into clang_windows
 Conflicts:
	include/nlohmann/detail/input/binary_reader.hpp
	include/nlohmann/detail/input/input_adapters.hpp
	include/nlohmann/detail/input/lexer.hpp
	include/nlohmann/detail/output/binary_writer.hpp
	include/nlohmann/json.hpp
	single_include/nlohmann/json.hpp
2020-06-27 13:14:48 +02:00

270 lines
13 KiB
C++

/*
__ _____ _____ _____
__| | __| | | | JSON for Modern C++ (test suite)
| | |__ | | | | | | version 3.8.0
|_____|_____|_____|_|___| https://github.com/nlohmann/json
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
SPDX-License-Identifier: MIT
Copyright (c) 2013-2019 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 "doctest_compatibility.h"
#include <nlohmann/json.hpp>
using nlohmann::json;
namespace
{
// helper function to check std::less<json::value_t>
// see https://en.cppreference.com/w/cpp/utility/functional/less
template <typename A, typename B, typename U = std::less<json::value_t>>
bool f(A a, B b, U u = U())
{
return u(a, b);
}
}
TEST_CASE("lexicographical comparison operators")
{
SECTION("types")
{
std::vector<json::value_t> j_types =
{
json::value_t::null,
json::value_t::boolean,
json::value_t::number_integer,
json::value_t::number_unsigned,
json::value_t::number_float,
json::value_t::object,
json::value_t::array,
json::value_t::string,
json::value_t::binary
};
SECTION("comparison: less")
{
std::vector<std::vector<bool>> expected =
{
{false, true, true, true, true, true, true, true, true},
{false, false, true, true, true, true, true, true, true},
{false, false, false, false, false, true, true, true, true},
{false, false, false, false, false, true, true, true, true},
{false, false, false, false, false, true, true, true, true},
{false, false, false, false, false, false, true, true, true},
{false, false, false, false, false, false, false, true, true},
{false, false, false, false, false, false, false, false, true},
{false, false, false, false, false, false, false, false, false}
};
for (size_t i = 0; i < j_types.size(); ++i)
{
for (size_t j = 0; j < j_types.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
// check precomputed values
CHECK(operator<(j_types[i], j_types[j]) == expected[i][j]);
CHECK(f(j_types[i], j_types[j]) == expected[i][j]);
}
}
}
}
SECTION("values")
{
json j_values =
{
nullptr, nullptr,
-17, 42,
8u, 13u,
3.14159, 23.42,
"foo", "bar",
true, false,
{1, 2, 3}, {"one", "two", "three"},
{{"first", 1}, {"second", 2}}, {{"a", "A"}, {"b", {"B"}}},
json::binary({1, 2, 3}), json::binary({1, 2, 4})
};
SECTION("comparison: equal")
{
std::vector<std::vector<bool>> expected =
{
{true, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false},
{true, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false},
{false, false, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false},
{false, false, false, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false},
{false, false, false, false, true, false, false, false, false, false, false, false, false, false, false, false, false, false},
{false, false, false, false, false, true, false, false, false, false, false, false, false, false, false, false, false, false},
{false, false, false, false, false, false, true, false, false, false, false, false, false, false, false, false, false, false},
{false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, false, false, false},
{false, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, false, false},
{false, false, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, false},
{false, false, false, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false},
{false, false, false, false, false, false, false, false, false, false, false, true, false, false, false, false, false, false},
{false, false, false, false, false, false, false, false, false, false, false, false, true, false, false, false, false, false},
{false, false, false, false, false, false, false, false, false, false, false, false, false, true, false, false, false, false},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, true, false, false, false},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, true, false, false},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, true, false},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, true}
};
for (size_t i = 0; i < j_values.size(); ++i)
{
for (size_t j = 0; j < j_values.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
CAPTURE(j_values[i])
CAPTURE(j_values[j])
// check precomputed values
CHECK( (j_values[i] == j_values[j]) == expected[i][j] );
}
}
// comparison with discarded elements
json j_discarded(json::value_t::discarded);
for (size_t i = 0; i < j_values.size(); ++i)
{
CHECK( (j_values[i] == j_discarded) == false);
CHECK( (j_discarded == j_values[i]) == false);
CHECK( (j_discarded == j_discarded) == false);
}
// compare with null pointer
json j_null;
CHECK(j_null == nullptr);
CHECK(nullptr == j_null);
}
SECTION("comparison: not equal")
{
for (size_t i = 0; i < j_values.size(); ++i)
{
for (size_t j = 0; j < j_values.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
// check definition
CHECK( (j_values[i] != j_values[j]) == !(j_values[i] == j_values[j]) );
}
}
// compare with null pointer
json j_null;
CHECK( (j_null != nullptr) == false);
CHECK( (nullptr != j_null) == false);
CHECK( (j_null != nullptr) == !(j_null == nullptr));
CHECK( (nullptr != j_null) == !(nullptr == j_null));
}
SECTION("comparison: less")
{
std::vector<std::vector<bool>> expected =
{
{false, false, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true},
{false, false, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true},
{false, false, false, true, true, true, true, true, true, true, false, false, true, true, true, true, true, true},
{false, false, false, false, false, false, false, false, true, true, false, false, true, true, true, true, true, true},
{false, false, false, true, false, true, false, true, true, true, false, false, true, true, true, true, true, true},
{false, false, false, true, false, false, false, true, true, true, false, false, true, true, true, true, true, true},
{false, false, false, true, true, true, false, true, true, true, false, false, true, true, true, true, true, true},
{false, false, false, true, false, false, false, false, true, true, false, false, true, true, true, true, true, true},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, true, true},
{false, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, true},
{false, false, true, true, true, true, true, true, true, true, false, false, true, true, true, true, true, true},
{false, false, true, true, true, true, true, true, true, true, true, false, true, true, true, true, true, true},
{false, false, false, false, false, false, false, false, true, true, false, false, false, true, false, false, true, true},
{false, false, false, false, false, false, false, false, true, true, false, false, false, false, false, false, true, true},
{false, false, false, false, false, false, false, false, true, true, false, false, true, true, false, false, true, true},
{false, false, false, false, false, false, false, false, true, true, false, false, true, true, true, false, true, true},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, true},
{false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false}
};
for (size_t i = 0; i < j_values.size(); ++i)
{
for (size_t j = 0; j < j_values.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
CAPTURE(j_values[i])
CAPTURE(j_values[j])
// check precomputed values
CHECK( (j_values[i] < j_values[j]) == expected[i][j] );
}
}
// comparison with discarded elements
json j_discarded(json::value_t::discarded);
for (size_t i = 0; i < j_values.size(); ++i)
{
CAPTURE(i)
CHECK( (j_values[i] < j_discarded) == false);
CHECK( (j_discarded < j_values[i]) == false);
CHECK( (j_discarded < j_discarded) == false);
}
}
SECTION("comparison: less than or equal equal")
{
for (size_t i = 0; i < j_values.size(); ++i)
{
for (size_t j = 0; j < j_values.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
// check definition
CHECK( (j_values[i] <= j_values[j]) == !(j_values[j] < j_values[i]) );
}
}
}
SECTION("comparison: greater than")
{
for (size_t i = 0; i < j_values.size(); ++i)
{
for (size_t j = 0; j < j_values.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
// check definition
CHECK( (j_values[i] > j_values[j]) == (j_values[j] < j_values[i]) );
}
}
}
SECTION("comparison: greater than or equal")
{
for (size_t i = 0; i < j_values.size(); ++i)
{
for (size_t j = 0; j < j_values.size(); ++j)
{
CAPTURE(i)
CAPTURE(j)
// check definition
CHECK( (j_values[i] >= j_values[j]) == !(j_values[i] < j_values[j]) );
}
}
}
}
}