SB-012-TESTING_FRAMEWORK.md (P2, 743 lines)

• Comprehensive test framework for unit, integration, and hardware testing on emulator/real hardware
• Architecture: Test Runner → Test Suites (Unit/Integration/Hardware) → Test Utilities (Assert/Mock/Benchmark)
• All features implemented in test_framework.c and test_framework.h (~37KB)
• Data structures: d3tui_test_result_t (PASSED/FAILED/SKIPPED/ERROR), d3tui_test_case_t, d3tui_test_suite_t, d3tui_test_runner_t
• API: init/shutdown, register_suite/case, run_all/run_suite/run_case, get_stats
• Assertions: true/false, equal/not_equal, null/not_null, string equality/contains, memory equality, float with epsilon
• Mocking framework: d3tui_mock_function/unmock/was_called/get_call_count/get_call_args/reset
• Benchmarking: bench_start/end/get_results/print_results/reset
• Automatic test discovery via D3TUI_TEST(suite, name) macro with __attribute__((constructor))
• Configuration via d3tui.test.ini with suites, filters, timeouts
• CLI: d3tui_test --suite unit --test test_name --verbose --stop-on-failure --format json --output results.json
• CI test matrix: Linux unit/integration every commit, Flycast hardware nightly, real hardware on demand
• Owner: from-minimax-01