Used to run AtomVM instances in tests.

Provides convenience assertions and eval/3 function to evaluate Erlang or Elixir code as a string.

compile_quoted/2 and run/3 are lower level API used for tests that run one-off code without evaluation. This works by first compiling a module with some AST that can use var! for runtime input.

This input is provided by serializing terms to opts.bin which is read when this module runs start/0. We then write code output to result.bin.

Compiled files are cached under tmp/modules/ using a hash of the generated module plus this support file's source, so helper changes invalidate stale bundles. All eval tests run the same underlying code so eval expects module to be compiled and cached prior to call. Input and output files for tests running concurently are keyed by AVM_RUN_DIR which stores path prefix.