microtests

Overview ¶

Package microtests holds the 5 risk-validation tests that were written to prove the material design choices in RFC 0004 (storage engine v4) actually hold under Pebble's real behavior. They were originally at /tmp/baton-rfc-microtests/ during the RFC pressure-test phase; lifting them into the repo keeps them as regression tests against the production code.

The 5 tests (one per file):

• tuple_test.go — prefix-free property of the tuple key encoding. Critical: range scans give wrong results if encoded keys aren't prefix-free.
• compress_test.go — DBCompressionGood (zstd at L5/L6 + Snappy at upper levels) gives the expected size + decompress speed.
• checkpoint_test.go — db.Checkpoint produces a self-contained directory that reopens cleanly.
• ingest_excise_test.go — IngestAndExcise atomically replaces a key range with an externally-built SST.
• codec_perf_test.go — codegen-emitted codecs are ~5× faster than reflection-based codecs (justifies the hybrid registry).