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b179e6f6cf
testing: add comprehensive test suite for test-driven development
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Add unit tests for previously untested modules (protocol, data, metadata,
file, glob), robustness tests for deserialization of malformed inputs,
thread safety stress tests, property-based roundtrip tests, and 6 fuzz
targets. Update CI with CTest integration, coverage reporting, and
valgrind memory checking.
New test files:
- test_data.c: Data type lifecycle (5 tests)
- test_protocol.c: Protocol I/O roundtrips and error paths (9 tests)
- test_metadata.c: Metadata serialization roundtrips (6 tests)
- test_file.c: File operations and send/receive (12 tests)
- test_glob.c: Glob pattern matching (10 tests)
- test_robustness.c: Malformed input handling for chunk/delta/protocol (11 tests)
- test_stress.c: MPMC queue stress, backpressure, rapid create/destroy (3 tests)
- test_property.c: Compress, delta, chunk, glob roundtrip properties (4 tests)
- tests/fuzz/: 6 libFuzzer targets for deserialization functions
Extended existing tests:
- test_config.c: config_send/config_receive roundtrip via fork+pipe
- test_shared_utils.c: mkdir_r, glob_match, delete_extras
Infrastructure:
- CTest integration in CMakeLists.txt
- Coverage support (-DENABLE_COVERAGE=ON)
- Fuzz target support (-DENABLE_FUZZ=ON)
- CI: coverage, valgrind, address sanitizer jobs
- Fixed MPMC stress test race condition (cnd_signal -> cnd_broadcast)
2026-07-19 19:19:15 +02:00
TapTap
e16db56580
feat: add delta transfer for incremental sync
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Implement rsync-style delta transfer using rolling checksums (Adler-32 +
xxHash32). When a file exists on both sides but has changed, only the
changed blocks are transmitted instead of the entire file.
- New status codes: STATUS_DELTA_SIGNATURE, STATUS_DELTA_DATA
- Protocol version bumped to 1.2.0
- Server generates block signature, client computes delta
- Auto-fallback to whole-file when delta >= 70% of file size
- Works with zstd compression on delta stream
- Configurable block size (default 8KB, --delta-block flag)
- 13 unit tests covering hashing, signature roundtrip, delta compute/apply,
file growth/shrink, and decision logic
2026-07-18 20:00:15 +02:00
TapTap
Theo Tappe