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Fix CI: include cycle, GCC 4.8 literal operator spacing, and global UDLs off in the JSON_NO_AUTOMATIC_UDLS test

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- Suppress clang-tidy misc-header-include-cycle on the intentional mutual
  include of json.hpp and json_literals.hpp.
- Use operator"" _json with a space for GCC 4.8 in the test's detection
  aliases, as the header does.
- Only test the global literal operators when JSON_USE_GLOBAL_UDLS is on.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann committed 2026-09-29 16:40:12 +02:00
1 parent 71b9c4a88d
commit a00c951d52
5 files changed
+20 -4
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tests/src/unit-no_automatic_udls.cpp
+15 -4
View File
@@ -41,11 +41,20 @@ namespace
// deferred to the point of instantiation, where it considers the declarations
// visible from here (the global using-declarations of JSON_USE_GLOBAL_UDLS) plus
// argument-dependent lookup (the literals in the library namespace).
template<typename T>
using json_udl_t = decltype(operator""_json(std::declval<T>(), std::size_t()));
#if !defined(__GNUC__) || defined(__clang__) || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
template<typename T>
using json_udl_t = decltype(operator""_json(std::declval<T>(), std::size_t()));
template<typename T>
using json_pointer_udl_t = decltype(operator""_json_pointer(std::declval<T>(), std::size_t()));
template<typename T>
using json_pointer_udl_t = decltype(operator""_json_pointer(std::declval<T>(), std::size_t()));
#else
// GCC 4.8 requires a space between "" and suffix
template<typename T>
using json_udl_t = decltype(operator"" _json(std::declval<T>(), std::size_t()));
template<typename T>
using json_pointer_udl_t = decltype(operator"" _json_pointer(std::declval<T>(), std::size_t()));
#endif
template<typename T>
using has_json_udl = nlohmann::detail::is_detected<json_udl_t, T>;
@@ -83,11 +92,13 @@ TEST_CASE("JSON_NO_AUTOMATIC_UDLS")
TEST_CASE("JSON_NO_AUTOMATIC_UDLS with <nlohmann/json_literals.hpp>")
{
#if !defined(JSON_USE_GLOBAL_UDLS) || JSON_USE_GLOBAL_UDLS
SECTION("global namespace")
{
CHECK("[1,2]"_json == json({1, 2}));
CHECK("/a/0"_json_pointer == json::json_pointer("/a/0"));
}
#endif
SECTION("nlohmann::literals::json_literals")
{