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Add regression test for #3810 #4608

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Add regression test for #3810 #4608

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fb895ba
:white_check_mark: add regression test for #3810
nlohmann Jan 19, 2025
68c4905
:white_check_mark: add regression test for #3810
nlohmann Jan 22, 2025
2db45cb
:white_check_mark: add regression test for #3810
nlohmann Jan 22, 2025
821d7ef
:white_check_mark: add regression test for #3810
nlohmann Jan 23, 2025
feb18d7
:white_check_mark: add regression test for #3810
nlohmann Jan 23, 2025
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33 changes: 33 additions & 0 deletions tests/src/unit-regression2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -377,6 +377,19 @@ inline for_3333::for_3333(const json& j)
: for_3333(j.value("x", 0), j.value("y", 0))
{}

/////////////////////////////////////////////////////////////////////
// for #3810
/////////////////////////////////////////////////////////////////////

struct Example_3810
{
int bla{};

Example_3810() = default;
};

NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Example_3810, bla);

TEST_CASE("regression tests 2")
{
SECTION("issue #1001 - Fix memory leak during parser callback")
Expand Down Expand Up @@ -1004,6 +1017,26 @@ TEST_CASE("regression tests 2")
CHECK(p.x == 1);
CHECK(p.y == 2);
}

SECTION("issue #3810 - ordered_json doesn't support construction from C array of custom type")
{
Example_3810 states[45]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)

// fix "not used" warning
states[0].bla = 1;

const auto* const expected = R"([{"bla":1},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0}])";

// This works:
nlohmann::json j;
j["test"] = states;
CHECK(j["test"].dump() == expected);

// This doesn't compile:
nlohmann::ordered_json oj;
oj["test"] = states;
CHECK(oj["test"].dump() == expected);
}
}

DOCTEST_CLANG_SUPPRESS_WARNING_POP
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