How do you debug tests?

[GP4cK]

I'm using VSCode and the Jest Runner Extension. Usually, this adds Run | Debug on top of every describe / it and I can debug individual tests like this with breakpoints.

From what I read here and there it should be possible but I can't even see the Run | Debug.

Do you mind sharing your .vscode/launch.json and .vscode/settings.json?

[TriPSs]

I do not use vscode so I'm not able to share it 😅 Maybe there is someone else that uses it that can share it.

[GP4cK]

For now I use this:

{
  "version": "0.2.0",
  "configurations": [
    {
      "type": "node",
      "request": "launch",
      "name": "Debug test",
      "program": "${workspaceFolder}/node_modules/jest/bin/jest",
      "args": ["--runInBand", "--collectCoverage=false", "--config=${workspaceFolder}/jest.preset.js", "${file}"],
      "console": "integratedTerminal",
      "internalConsoleOptions": "neverOpen"
    }
  ]
}

With this I can open a test file, go to the Run & Debug Tab and debug the entire test file.

[GP4cK]

Actually it might be an issue just on certain files because they are too big.
Ex: packages/query-typeorm/__tests__/services/typeorm-query.service.spec.ts doesn't show Run | Debug but packages/query-graphql/__tests__/resolvers/relations/read-relation.resolver.spec.ts does.

[GP4cK]

In fact, the issue is that the VSCode extension doesn't support decorator for function parameters at this time.
I've made a PR to fix it: firsttris/vscode-jest-runner#308

If you can't wait, it's very easy to package the code and use your own version: https://code.visualstudio.com/api/working-with-extensions/publishing-extension

[GP4cK]

Just to add on to this, you can also run a single test in watch mode like this:

 nx run e2e --project=examples --testFile=examples/typeorm-soft-delete/e2e/todo-item.resolver.spec.ts --testNamePattern="should return deletedTodos and their subTasks" --watch