Error using VS Code insders on macOS runners

[rH4rtinger]

I am using the following configuration of .vscode-test.mjs which uses the insiders version.

import { defineConfig } from "@vscode/test-cli";

export default defineConfig({
  files: "out/test/**/*.test.js",
  version: "insiders",
  mocha: {
    retries: 5,
    parallel: false,
  },
});

I execute the tests in a macos-latest pipeline via vscode-test script. I also tried to execute the tests executing in a macos-15 pipeline to validate it is not a macOS problem.

In both pipelines I get the following output:

> vscode-test

- Resolving version...
✔ Validated version: insiders
- Found at https://update.code.visualstudio.com/latest/darwin-arm64/insider?released=true
✔ Found at https://update.code.visualstudio.com/latest/darwin-arm64/insider?released=true
- Downloading (299.92 MB)
✔ Downloaded VS Code (07b4ff1883f94da91f6d698744fc7c3638b59720) into /Users/runner/work/vscode-logging/vscode-logging/.vscode-test/vscode-darwin-arm64-insiders
Test error: Error: spawn /Users/runner/work/vscode-logging/vscode-logging/.vscode-test/vscode-darwin-arm64-insiders/Visual Studio Code - Insiders.app/Contents/MacOS/Electron ENOENT
Exit code:   -2
Error: Process completed with exit code 1.

This makes it impossible to execute any tests on macOS with the insiders version.

The stable version does currently work, but I don't know if this issue will roll over to the next stable.