Test data

Path	What it checks
tests/test_roundtrip.mojo	Scalars, a nested struct, a list, a dict, a frame, and depth.
tests/test_golden.mojo	Bytes match spec/golden/, which the Python reference wrote.
tests/test_malformed.mojo	Truncation, a bad boolean, a huge length, bad UTF-8, trailing bytes, a bad frame, and a string view.
tests/test_fuzz.mojo	Fifty random messages round-trip. Random prefixes must raise rather than crash.
tests/test_value.mojo	A JSON Schema and a Value tree match reflection.
tests/test_gen.mojo	Generated Point and Message round-trip.
tests/test_tensor.mojo	Three Float64 values survive one tensor in a directory.
tests/test_tensor_v2.mojo	Version-2 directory, struct embedding, allocation, and byte order.
testdata/schema/	JSON Schema files the generator reads.

Regenerate the golden files with python3 spec/reference/gen_golden.py. Regenerate the structs with pixi run generate. pixi run check-generated diffs them against tests/generated/.