add test running support

[star-tek-mb]

Utilizes zig test command.

• single test running
• tests discovery

Differences from #57 is i am using vscode.TestController API.

I think it still has some issues, but i dont know how to solve them.

For example, if you have:

test "read" {
...
}

test "read struct" {
...
}

And you are running zig test file.zig --test-filter read - you will execute both tests.

Also, test runner is very slow i think (if you run multiple tests). Or is it supposed to be like that?

[Vexu]

This does seem to work when opening a file with a test for the first time but removing the test or adding a new one does not get picked up until the window is reloaded.

And you are running zig test file.zig --test-filter read - you will execute both tests.

I don't think there is a solution for that besides copying the entire file into a temporary file and commenting out all other tests but that would probably cause other issues.

You could make a proposal for making --test-filter more specific by for example including a file name and line somehow.

[star-tek-mb]

This does seem to work when opening a file with a test for the first time but removing the test or adding a new one does not get picked up until the window is reloaded.

I see. There is a manual refresh button that i fixed. But i also need to fix a document when onChangeDocument event happens, i guess. I will investigate.

[star-tek-mb]

I will wait for single test running in zig test cli. And will reopen pr.

[Vexu]

This should be possible now with ziglang/zig#19079 making test names fully qualified.