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test: cover JSON_NO_IO, JSON_THROW/TRY/CATCH_USER, JSON_SKIP_LIBRARY_VERSION_CHECK, and JSON_DisableEnumSerialization in CI (#5423)

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These four supported configuration macros were never actually compiled
anywhere in the test matrix:

- JSON_NO_IO and the JSON_THROW_USER/JSON_TRY_USER/JSON_CATCH_USER trio
  are exercised together in a new tests/src/unit-no_io_and_user_exceptions.cpp,
  which is automatically picked up by the existing unit-*.cpp test glob and
  thus built across the whole standard test matrix.
- JSON_SKIP_LIBRARY_VERSION_CHECK is exercised by a new, dedicated
  tests/src/skip_library_version_check.cpp, compiled directly by the new
  ci_test_skiplibraryversioncheck target in cmake/ci.cmake: the scenario it
  simulates (mixing two differently-versioned inclusions of the library)
  unavoidably triggers the compiler's own "macro redefined" warning, which
  would fail under the library's own -Weverything/-Werror unit test matrix
  for a reason unrelated to the macro under test.
- JSON_DisableEnumSerialization already had #if-guarded tests in several
  unit-*.cpp files (from #4384), but no CMake target ever actually set the
  JSON_DisableEnumSerialization CMake option, so that guarded code was never
  compiled. Add ci_test_disableenumserialization, mirroring the existing
  ci_test_noimplicitconversions/ci_test_noglobaludls targets. Building the
  full test suite with this option on surfaced one real, narrow gap: get<T>()
  on std::vector<std::byte> (used by unit-regression2.cpp's custom BinaryType
  tests) relies on std::byte being handled via enum serialization, so add the
  same #if-guard convention to the two affected SECTIONs there.

Both new CI targets are added to the ci_cmake_options matrix in
.github/workflows/ubuntu.yml, alongside the existing ci_test_* targets.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-09-05 21:09:31 +02:00
parent 09b6b6b5ba
commit 835b2e70f6
5 changed files with 175 additions and 1 deletions
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.github/workflows/ubuntu.yml
+1 -1
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@@ -100,7 +100,7 @@ jobs:
container: ubuntu:focal
strategy:
matrix:
target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls]
target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls, ci_test_disableenumserialization, ci_test_skiplibraryversioncheck]
steps:
- name: Install build-essential
run: apt-get update ; apt-get install -y build-essential unzip wget git libssl-dev