Integration with neotest

[nikensss]

Hi! I'm trying to run tests in my project using neotest (which I managed to get to to work for TS projects), but I keep getting an error that it's not really clear to me were should I start looking. Sorry if this is not a problem with rustaceanvim.

The error that I get is really short and without much information: error: failed to parse test binary arguments --show-output: arguments are unsupported.

When I do RustLsp debuggables I can see some element of the list showing the --show-output flag. And everything works fine.

Any help appreciated, and thanks for the plugin, it's extremely useful.

[mrcjkb]

Update: This has been fixed: #384

Hey 👋

It looks like the executable you are using to run tests doesn't support the --show-output flag (which is provided by rust-analyzer).
rustaceanvim will use cargo-nextest if you have it installed.
You can try disabling that by setting vim.g.rustaceanvim.tools.enable_nextest = false.

If that fixes it, then it's probably a bug in rustaceanvim, and the command should probably be sanitised for cargo-nextest.

[nikensss]

Yup, that fixes the problem. I also don't really know why I have nextest, to be honest, I'm gonna do some research there.

Thank you very much for the quick reply also!

[mrcjkb]

Thanks for the info 🙏

I've created an issue for it and will fix it when I'm near my laptop #383

[PMassicotte]

Hi.

I am trying to use this feature with neotest. I am currently learning rust and doing some exercises. In these, there is a test file. For example:

As you can see, some tests are failing but reported as success when I run :lua require("neotest").run.run(vim.fn.expand("%")) (see perfect_lower_case).

So it looks like that only the first test is run (empty_sentence), and all others marked #[ignore] are not run but marked success.

Another question, is it possible to run all test a la cargo test -- --include-ignored?

[mrcjkb]

Passing test args to the neotest adapter isn't supported yet: #445

[PMassicotte]

Thank you for your answer. So at the moment I removed all ignore tags. One more question if you do not mind. I am now trying to run all tests, but I am getting a symbol that looks like that all but 1 test were not executed despite using :lua require("neotest").run.run(vim.fn.expand("%"))

[mrcjkb]

Cargo doesn't have a concept of a "test file", so the neotest adapter will look for a top-level test module and run the first one it finds (or all of them - I don't remember).

In Rust, the convention is to put your tests in a separate test module:

#[cfg(test)]
mod tests {

    use super::*;
   
    #[test]
    fn fooTest() {
    }
}

This has the additional benefit that it won't be included in your production binary.