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♻️ overwork std specializations (#3121)

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This commit is contained in:
Niels Lohmann
2021-11-04 16:38:40 +01:00
committed by GitHub
parent 5d87c4d409
commit 5c08a52fd6
3 changed files with 73 additions and 27 deletions
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52
test/src/unit-hash.cpp
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@@ -31,10 +31,11 @@ SOFTWARE.
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using ordered_json = nlohmann::ordered_json;
#include <set>
TEST_CASE("hash")
TEST_CASE("hash<nlohmann::json>")
{
// Collect hashes for different JSON values and make sure that they are distinct
// We cannot compare against fixed values, because the implementation of
@@ -82,3 +83,52 @@ TEST_CASE("hash")
CHECK(hashes.size() == 21);
}
TEST_CASE("hash<nlohmann::ordered_json>")
{
// Collect hashes for different JSON values and make sure that they are distinct
// We cannot compare against fixed values, because the implementation of
// std::hash may differ between compilers.
std::set<std::size_t> hashes;
// null
hashes.insert(std::hash<ordered_json> {}(ordered_json(nullptr)));
// boolean
hashes.insert(std::hash<ordered_json> {}(ordered_json(true)));
hashes.insert(std::hash<ordered_json> {}(ordered_json(false)));
// string
hashes.insert(std::hash<ordered_json> {}(ordered_json("")));
hashes.insert(std::hash<ordered_json> {}(ordered_json("foo")));
// number
hashes.insert(std::hash<ordered_json> {}(ordered_json(0)));
hashes.insert(std::hash<ordered_json> {}(ordered_json(unsigned(0))));
hashes.insert(std::hash<ordered_json> {}(ordered_json(-1)));
hashes.insert(std::hash<ordered_json> {}(ordered_json(0.0)));
hashes.insert(std::hash<ordered_json> {}(ordered_json(42.23)));
// array
hashes.insert(std::hash<ordered_json> {}(ordered_json::array()));
hashes.insert(std::hash<ordered_json> {}(ordered_json::array({1, 2, 3})));
// object
hashes.insert(std::hash<ordered_json> {}(ordered_json::object()));
hashes.insert(std::hash<ordered_json> {}(ordered_json::object({{"foo", "bar"}})));
// binary
hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({})));
hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({}, 0)));
hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({}, 42)));
hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3})));
hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3}, 0)));
hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3}, 42)));
// discarded
hashes.insert(std::hash<ordered_json> {}(ordered_json(ordered_json::value_t::discarded)));
CHECK(hashes.size() == 21);
}