Revision control
++ # src/fuzzgen/tests/CMakeLists.txt
++ #
++ # Autotests for the crash-attribution feature (QtFuzzRuntime / crashdiag.h
++ # and its wiring into FuzzCppGenerator's templates). Three tiers, all wired
++ # via plain CTest so they run unmodified on macOS, Windows, and Linux:
++ #
++ # Tier 1 (crashdiag_test): zero Qt dependency. Directly exercises the
++ # real crash handler with a deliberate SIGSEGV
++ # / abort(), asserting the crash line names
++ # the right call. Always runs.
++ # Tier 2 (codegen_selftest): zero Qt dependency. Calls the real
++ # FuzzCppGenerator with hand-built method
++ # lists, asserting on the generated source
++ # text (array/case alignment, no leftover
++ # @@..@@ placeholders). Always runs.
++ # Tier 2 (scanner_diff_selftest): zero Qt dependency. Calls the real
++ # classesDeclaredIn()/classesDefinedIn()
++ # (used by qtdiff) against hand-written
++ # header/source fixtures. Always runs.
++ # Tier 3 (crashdiag_e2e): requires Qt6::Core. Generates, compiles, and
++ # runs a real fuzz harness against a synthetic
++ # crashy class, end to end. Skipped when no
++ # Qt6 install is available.
++ #
++ # Tiers 1 and 3 deliberately crash by design — CTest treats a subprocess that
++ # dies from a signal/structured exception as an automatic failure regardless
++ # of PASS_REGULAR_EXPRESSION (confirmed empirically: that property only
++ # overrides an ordinary nonzero exit code, not signal termination). They are
++ # therefore run through run_and_check, which spawns the crashing program,
++ # captures its output, and itself always exits cleanly — see
++ # run_and_check.cpp for the full rationale.
++
++ # ── Shared subprocess-capture helper ──────────────────────────────────────────
++
++ add_executable(run_and_check run_and_check.cpp)
++
++ # ── Tier 1: crashdiag_test ────────────────────────────────────────────────────
++
++ add_executable(crashdiag_test crashdiag_test.cpp)
++ target_include_directories(crashdiag_test PRIVATE "${_FUZZGEN_INCLUDE_DIR}")
++
++ add_test(NAME crashdiag_segv
++ COMMAND run_and_check "CRASHED.*FakeClass::crashyMethod" $<TARGET_FILE:crashdiag_test> segv
++ )
++ add_test(NAME crashdiag_abort
++ COMMAND run_and_check "CRASHED.*FakeClass::crashyMethod" $<TARGET_FILE:crashdiag_test> abort
++ )
++
++ # ── Tier 2: codegen_selftest ──────────────────────────────────────────────────
++
++ add_executable(codegen_selftest codegen_selftest.cpp)
++ target_link_libraries(codegen_selftest PRIVATE QtFuzzLib)
++
++ add_test(NAME codegen_selftest COMMAND codegen_selftest)
++
++ add_executable(scanner_diff_selftest scanner_diff_selftest.cpp)
++ target_link_libraries(scanner_diff_selftest PRIVATE QtFuzzLib)
++
++ add_test(NAME scanner_diff_selftest COMMAND scanner_diff_selftest)
++
++ # ── Tier 3: end-to-end, only when Qt6::Core is available ─────────────────────
++
++ find_package(Qt6 COMPONENTS Core QUIET)
++
++ if(TARGET Qt6::Core)
++ add_executable(gen_fixture gen_fixture.cpp)
++ target_link_libraries(gen_fixture PRIVATE QtFuzzLib)
++
++ set(_FIXTURE_CPP "${CMAKE_CURRENT_BINARY_DIR}/generated/fuzz_FakeClass.cpp")
++ add_custom_command(
++ OUTPUT "${_FIXTURE_CPP}"
++ COMMAND gen_fixture "${_FIXTURE_CPP}"
++ DEPENDS gen_fixture
++ COMMENT "Generating end-to-end crash-attribution fixture..."
++ VERBATIM
++ )
++
++ add_executable(crashdiag_e2e "${_FIXTURE_CPP}")
++ target_include_directories(crashdiag_e2e PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/fixtures")
++ target_link_libraries(crashdiag_e2e PRIVATE Qt6::Core)
++
++ add_test(NAME crashdiag_e2e
++ COMMAND run_and_check "CRASHED.*FakeClass::crashyMethod"
++ $<TARGET_FILE:crashdiag_e2e> --seed 1 --time 5
++ )
++ set_tests_properties(crashdiag_e2e PROPERTIES TIMEOUT 30)
++ else()
++ message(STATUS "fuzzgen tests: Qt6::Core not found — skipping Tier 3 end-to-end crashdiag_e2e test.")
++ endif()