Boa: setup test262 harness

[jasonwilliams]

It would be good to start running these https://github.com/tc39/test262/tree/master/test/language

Project

https://github.com/jasonwilliams/boa/projects/2

Tracking of blocking issues:

• [x] Exception handling (#377)
• [x] Function expressions (#266)
• [x] this keyword (#264)
• [x] Hoisting variables (#376)
• [x] Goal symbols when lexing (#294)

[jasonwilliams]

@vitkarpov if this is too much we could start of by doing what rapidus does for now and start with a few js files to test from https://github.com/maekawatoshiki/rapidus/tree/new-gen/test

Their test setup looks like this:
https://github.com/maekawatoshiki/rapidus/blob/3259515b4e3d48d53927bd3d065f6d1eb3b489e3/src/test.rs

Test Locations
https://github.com/tc39/test262/tree/master/test/language

Interpreting Test262 Tests

[jasonwilliams]

A good start could be to have a test file, which pulls in some of the pre-defined bindings before loading a file. Assert would be a start
https://github.com/tc39/test262/blob/master/INTERPRETING.md#test262-defined-bindings

We could test assert.js working then a JS test suite. We could test this by importing multiple js files but using the same executor, it should work.

We may need to bring https://github.com/tc39/test262 in as a submodule

[Razican]

I would like to re-open this. I don't think we are so far away from it, I would say we have to implement the following:

• Exception handling (#377)
• Function expressions (#266)
• this keyword (#264)
• Hoisting variables (#376)

After that, we can implement an automated process to give stats on what we support, and we can start tackling syntax step by step.

[Lan2u]

Now that we have goal symbol support (in the form of #486) is it worth giving this a go - do we have any progress already in terms of running test262 on boa (like a rust test runner)?

[HalidOdat]

Now that we have goal symbol support (in the form of #486) is it worth giving this a go - do we have any progress already in terms of running test262 on boa (like a rust test runner)?

No progress yet in terms of setting up the harness of the tests

[Lan2u]

Now that we have goal symbol support (in the form of #486) is it worth giving this a go - do we have any progress already in terms of running test262 on boa (like a rust test runner)?

No progress yet in terms of setting up the harness of the tests

Ok cool, I can potentially start looking at this