tree-sitter/test/fixtures/error_corpus/readme.md

The Error Corpus

This directory contains corpus tests that exercise error recovery in a variety of languages.

These corpus tests provide a simple way of asserting that error recoveries are "reasonable" in a variety of situations. But they are also somewhat overspecified. It isn't critical that error recovery behaves exactly as these tests specify, just that most of the syntax tree is preserved despite the error.

Sometimes these tests can start failing when changes are pushed to the parser repositories like tree-sitter-ruby, tree-sitter-javascript, etc. Usually, we just need to tweak the expected syntax tree.