Introduce a new built-in "io" module exposing a File class with a static size(path) method that performs asynchronous filesystem stat via libuv. The method uses a foreign function startSize_ to initiate the stat request and resumes the calling fiber through the scheduler upon completion. Extend the scheduler with schedulerResumeDouble and schedulerResumeString to support resuming fibers with numeric or string results. Include the generated io.wren.inc source, update the Xcode project to compile io.c and io.wren.inc, register the module in modules.c, and add a test file verifying synchronous-style async size calls and error handling.
This contains the automated validation suite for the VM and built-in libraries.
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benchmark/- Performance tests. These aren't strictly pass/fail, but let us compare performance both against other languages and against previous builds of Wren itself. -
core/- Tests for the built in core library, mainly methods on the core classes. If a bug is inwren_core.corwren_value.c, it will most likely break one of these tests. -
language/- Tests of the language itself, its grammar and runtime semantics. If a bug is inwren_compiler.corwren_vm.c, it will most likely break one of these tests. This includes tests for the syntax for the literal forms of the core classes. -
limit/- Tests for various hardcoded limits. The language doesn't officially specify these limits, but the Wren implementation has them. These tests ensure that limit behavior is well-defined and tested.