Feature request: switch between a Ruby file and its test (spec) file

[vittorius]

Basically, the subject. It's a pretty common piece of functionality for a Ruby extension IMHO.

Also, there can be a config to map custom relations between files and their specs (e.g. from app/controllers/{file}.rb to spec/requests/api/v1/{file}_spec.rb.

A good example of it could be https://marketplace.visualstudio.com/items?itemName=malt03.rails-rspec-file-toggle. We can replicate its functionality.

WDYT? I'm willing to contribute BTW.

[vitallium]

Hi, this would be amazing, but unfortunately, the Zed Extension API is limited, and there is no way to implement this currently.

[asok]

For anyone looking for some kind of a solution for this I'm able to employ tasks to achieve this.
Basically I have this in my tasks.json:

  {
    "label": "open_alternative_file",
    "command": "zed \"$ZED_WORKTREE_ROOT\"/$(spec-alternative-file $ZED_RELATIVE_FILE)",
    "hide": "on_success",
    "allow_concurrent_runs": false,
    "use_new_terminal": false,
    "reveal": "never",
    "shell": {
      "with_arguments": {
        "program": "sh",
        "args": ["--noediting", "--norc", "--noprofile"]
      }
    }
  },

and such script in my PATH:

#!/bin/sh

# Check if a filename is provided
if [ "$#" -ne 1 ]; then
    echo "Usage: $0 <filename>"
    exit 1
fi

# Get the provided filename
filename=$1

# Determine the alternative file
if [[ "$filename" =~ _spec\.rb$ ]]; then
    # If the file is a spec file, convert it to the corresponding regular Ruby file
    alternative_file=$(echo "$filename" | sed 's|^spec/|app/|; s|_spec\.rb$|.rb|')
else
    # If the file is a regular Ruby file, convert it to the corresponding spec file
    alternative_file=$(echo "$filename" | sed 's|^app/|spec/|; s|\.rb$|_spec.rb|')
fi

echo "$alternative_file"

[andyw8]

This feature was added to Ruby LSP in Shopify/ruby-lsp#2985 and uses a custom LSP request along with integration with VS Code.

The PR description also shows how it can be used with NeoVim, and I imagine something similar would be possible for Zed once scripting is supported (there's a long discussion here).

@asok's approach of shelling out to zed is interesting, but I can't think how that would be hooked into the language server.

cc @jenny-codes

[joeldrapper]

I got this working using a task that I assigned to a keyboard shortcut. You just need an executable that can take a file as input and then launch zed to another file by shelling out. If it’s possible to include a task and have it point to an executable in the extension, it could be doable.

[andyw8]

I suspect it wouldn't be viable since the extension compiles down to WebAssembly, but you could perhaps have the extension auto-install a tiny gem?

[MoskitoHero]

I just started writing that gem yesterday. It works locally, I just need a little time to package it.

[MoskitoHero]

Here you go, it’s quite rough for now, but it does the job (on my projects). Feel free to make PRs to match more settings / frameworks.

https://github.com/MoskitoHero/zed-test-toggle

[andyw8]

Nice! Had to make a small fix to the README example:

MoskitoHero/zed-test-toggle#1