Test data

testdata/ is the input to the suite. bash scripts/run-tests.sh reads it. Nothing in this tree is copied from another project's private corpus.

Cases

testdata/kiln-v2-cases.json holds 46 records. Each record has id, expect, input (hex), and schema. expect: accept must decode, match decoded when that object is present, and re-encode to the same bytes. expect: reject must throw KilnException whose code() is the record's error.

The cases cover an empty directory, scalar and vector payloads, names, packed dtypes, quantization schemes 0–2, opaque layouts, a directory embedded in a struct, a frame, a list of f32, and the reject paths FRAME, LIMIT, EOF, TYPE, UTF8, and TRAILING. The list rejects include a count of 16,777,216 structs that does not fit in the remaining buffer. That path returns EOF without allocating the list.

Oracle

testdata/reference/kiln_ref.py is the Frozen encoder used as a test oracle. The Java tests run it for Point, Message, lists, optional values, dicts, and framed values, including f32 negative zero and an f64 quiet NaN payload. The module is not on the runtime classpath.

Schemas

testdata/schema/point.json, message.json, and sample.json are the generator inputs. message.json references #/$defs/Meta. sample.json covers bytes, a byte list, a string list, a dict, and an optional string. scripts/generate.sh writes tests/generated. scripts/check-generated.sh regenerates those files and diffs them.