Module cassette 

Golden-fixture record and replay for streams.

A StreamCassette captures a deterministic trace of a stream – its metadata, the ordered envelopes it produced, derived timing, accumulated diagnostics, and the final stats – so that the same trace can be replayed as a fresh StreamValue or persisted as a golden fixture for tests. The kernel supplies the protocol types (Expr, Symbol, Error) used to serialize a cassette; this module supplies the concrete streaming-fabric behavior that records, redacts, validates, and round-trips those traces.

Structs

StreamCassette

A recorded, replayable trace of a single stream.

StreamCassetteTiming

Derived timing summary for a recorded cassette.

StreamGoldenFixtureReport

Outcome of validating a cassette against the golden-fixture rules.

Constants

STREAM_CASSETTE_EXTENSION

File extension (without the leading dot) for a persisted golden fixture.

STREAM_CASSETTE_FIXTURE_ROOT

Repository-relative root directory under which golden stream fixtures live.

Functions

stream_cassette_format_symbol

Returns the format symbol stamped into every serialized cassette.

stream_cassette_golden_extension

Returns the file extension (without leading dot) for golden fixtures.

stream_cassette_golden_root

Returns the repository-relative root for golden stream fixtures.