# The language test corpus

The `.bas` files in this directory and their sibling `.txt` files are the editable language
corpus. CMake registers every program as an individual `local_*` CTest case and compares its
output with the sibling expectation.

The corpus includes cases carried over from the deprecated Go implementation as well as cases
written for this interpreter. Their provenance is useful when investigating a regression, but it
does not make any case immutable or turn the old implementation into a specification.

**Change a program and its expectation deliberately and in the same commit.** If the changed
output represents an intentional language decision, record the reason in `TODO.md` or the
relevant documentation. If it is an accidental change, fix the interpreter instead.

The `examples/` subdirectory contains complete BASIC programs used as worked examples. It is
part of the same corpus and follows the same `.bas`/`.txt` pairing rule.