Improve toml-test integration

[arp242]

Make the scripts executable and add hashbang; this way it can be run a bit easier:

% toml-test -int-as-float ./toml-test-parse.js | tail -n3
toml-test v2023-10-18 [./toml-test-parse.js]: using embedded tests
  valid tests: 163 passed,  3 failed
invalid tests: 342 passed, 13 failed

% toml-test ./toml-test-encode.js -encoder | tail -n2
toml-test v2023-10-18 [./toml-test-encode.js]: using embedded tests
encoder tests: 157 passed,  9 failed

Also add a run-toml-test.bash script to the root, with the correct flags to run the tests and skipping known failures; this way it's easy to test for regressions.

I just added the -int-as-float flag to toml-test, so that you don't get loads of "failed" tests on this. In my reading of the specification ("64-bit signed integers (from −2^63 to 2^63−1) should be accepted") it's not actually required to support the full int64 range. I'll send a PR to clarify the spec on this later.

[cyyynthia]

Thank you for the contribution!

Yeah, the integer limit is not marked as required by the spec and uses the term "should"; the only enforced requirement is to properly reject integers if they cannot be represented which I do.

I also found a few tests for the encoder fail due to expectations of sub-millisecond precision in the output, and I had to modify my un-tag method to handle +Inf with an uppercase I - IMHO it should be lowercase everywhere for consistency with the other tests and the way it is written in TOML

[arp242]

The Inf thing was fixed: toml-lang/toml-test#143 – I didn't really look at the content of the scripts, but you should be able to remove any exceptions you did for that.

I need to look at the other failures; I just added smol-toml to https://arp242.github.io/toml-test-matrix; one of the reason I made that is so I can have some insight what failures happen with different implementations, and fix/improve toml-test as needed. I'll get round to it ... eventually.