Nuxt•2d ago

Can't get Vitest Extension to resolve Nuxt's auto-imports

I have Vitest running (sort of) in the terminal. It finds Nuxt's auto-imports just fine for my unit tests, but as soon as I use the Vitest Extension, they don't work. The extension seems to be completely unaware of Nuxt's environment. Not sure how to tackle this? As it's in that gray area betwee two pojects (Nuxt and Vitest)

8 Replies

kapa.ai•2d ago

Hi @Reinier Kaper. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the knowledge sources provided, I can offer some insights into your issue with Vitest and Nuxt's auto-imports. It seems that the Vitest extension might not be properly configured to work with Nuxt's environment. To resolve this issue, you need to ensure that your Vitest configuration is set up correctly for Nuxt. Here are some steps you can take: 1. Make sure you have the correct setup in your vitest.config.ts file. According to the Nuxt documentation on testing (https://nuxt.com/docs/getting-started/testing#setup), you should use the defineVitestConfig function from @nuxt/test-utils/config. Your configuration file should look something like this:

import { defineVitestConfig } from '@nuxt/test-utils/config'

export default defineVitestConfig({
  // any custom Vitest config you require
})

import { defineVitestConfig } from '@nuxt/test-utils/config'

export default defineVitestConfig({
  // any custom Vitest config you require
})

2. It's important to note that you need to have "type": "module" specified in your package.json or rename your Vitest config file appropriately (e.g., vitest.config.mts or vitest.config.mjs) Nuxt documentation on testing (https://nuxt.com/docs/getting-started/testing#unit-testing). 3. For Nuxt's auto-imports to work in your tests, you need to use the Nuxt environment. You can do this by adding .nuxt. to your test file names (e.g., my-file.nuxt.test.ts) or by adding @vitest-environment nuxt as a comment at the top of your test files Nuxt documentation on testing (https://nuxt.com/docs/getting-started/testing#using-a-nuxt-runtime-environment). 4. If you want to use Nuxt's environment for all your tests, you can set environment: 'nuxt' in your Vitest configuration:

import { defineVitestConfig } from '@nuxt/test-utils/config'

export default defineVitestConfig({
  test: {
    environment: 'nuxt',
    // other options...
  }
})

import { defineVitestConfig } from '@nuxt/test-utils/config'

export default defineVitestConfig({
  test: {
    environment: 'nuxt',
    // other options...
  }
})

5. For mocking Nuxt's auto-imports in your tests, you can use the mockNuxtImport function from @nuxt/test-utils/runtime. This might help with resolving auto-imports in the Vitest extension Nuxt documentation on testing (https://nuxt.com/docs/getting-started/testing#mocknuxtimport). If you've followed these steps and are still experiencing issues with the Vitest extension, it might be a problem with the extension itself or how it's interacting with your Nuxt project. In that case, you might want to reach out to the Vitest extension developers or check their documentation for any Nuxt-specific configurations. Remember, the terminal running your tests directly uses the project's configuration, while the extension might need additional setup to properly recognize Nuxt's environment and auto-imports. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2d ago

<@277205807937093633> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

Reinier KaperOP•2d ago

@kapa.ai The issue is not with auto-imports in the source files. It's the auto-imports in the test files that don't work

kapa.ai•2d ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I apologize for the misunderstanding. Let's focus on the auto-imports in the test files specifically. Based on the knowledge sources, here's how you can address the issue with auto-imports in your Nuxt test files when using the Vitest extension: 1. First, ensure that your test files are using the Nuxt environment. You can do this by adding .nuxt. to your test file names (e.g., my-file.nuxt.spec.ts) or by adding // @vitest-environment nuxt as a comment at the top of your test files. This is crucial for the Nuxt runtime environment to be available in your tests, as mentioned in the Nuxt documentation on testing (https://nuxt.com/docs/getting-started/testing#using-a-nuxt-runtime-environment). 2. If you want to use Nuxt's auto-imports in your tests, you should use the mountSuspended or renderSuspended helpers from @nuxt/test-utils/runtime. These helpers allow you to mount or render components within the Nuxt environment, giving you access to auto-imports and injections from your Nuxt plugins. Here's an example from the Nuxt documentation (https://nuxt.com/docs/getting-started/testing#mountsuspended):

   import { mountSuspended } from '@nuxt/test-utils/runtime'
   import { SomeComponent } from '#components'

   it('can mount some component', async () => {
     const component = await mountSuspended(SomeComponent)
     // Your test assertions here
   })

   import { mountSuspended } from '@nuxt/test-utils/runtime'
   import { SomeComponent } from '#components'

   it('can mount some component', async () => {
     const component = await mountSuspended(SomeComponent)
     // Your test assertions here
   })

3. For mocking Nuxt's auto-imports in your tests, you can use the mockNuxtImport function from @nuxt/test-utils/runtime. This is particularly useful when you need to mock certain Nuxt functionalities. Here's an example from the Nuxt documentation (https://nuxt.com/docs/getting-started/testing#mocknuxtimport):

   import { mockNuxtImport } from '@nuxt/test-utils/runtime'
mockNuxtImport('useStorage', () => {
     return () => {
       return { value: 'mocked storage' }
     }
   })

   // Your tests here

   import { mockNuxtImport } from '@nuxt/test-utils/runtime'
mockNuxtImport('useStorage', () => {
     return () => {
       return { value: 'mocked storage' }
     }
   })

   // Your tests here

4. Make sure your vitest.config.ts file is correctly set up to use the Nuxt environment:

   import { defineVitestConfig } from '@nuxt/test-utils/config'

   export default defineVitestConfig({
     test: {
       environment: 'nuxt',
       // other options...
     }
   })

   import { defineVitestConfig } from '@nuxt/test-utils/config'

   export default defineVitestConfig({
     test: {
       environment: 'nuxt',
       // other options...
     }
   })

If you've implemented these steps and the Vitest extension is still not recognizing the auto-imports in your test files, it might be an issue with the extension itself. In that case, you may need to check the Vitest extension's documentation for any specific configurations required for Nuxt projects, or consider reaching out to the extension's developers for support. Remember, the @nuxt/test-utils/runtime helpers are designed to work within the Nuxt environment, so using them should allow you to access Nuxt's auto-imports in your test files. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2d ago

<@277205807937093633> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

Reinier KaperOP•2d ago

@kapa.ai this is not the issue. The problem is both imports in test files from, say, ~/utils/some-util and auto-imports in the source files. For example:

// some-util.ts
export function doThing() {
  return someAutoImport(true)
}

// some-util.ts
export function doThing() {
  return someAutoImport(true)
}

kapa.ai•2d ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I apologize for the confusion earlier. I understand now that the issue involves both imports from your project's files (like ~/utils/some-util) and auto-imports in the source files when running tests with the Vitest extension. Let's address this specific problem based on the information available in the knowledge sources. The root cause of this issue seems to be related to how Nuxt's auto-imports and project imports are resolved when using the Vitest extension. Here are some potential solutions and workarounds: 1. Use mockNuxtImport for auto-imports: For auto-imports that are not being recognized by the Vitest extension, you can use the mockNuxtImport function. This approach is described in the Nuxt documentation on testing (https://nuxt.com/docs/getting-started/testing#mocknuxtimport):

   import { mockNuxtImport } from '@nuxt/test-utils/runtime'

   mockNuxtImport('someAutoImport', () => {
     return (value: boolean) => {
       // Mock implementation
       return value
     }
   })

   // Your tests here

   import { mockNuxtImport } from '@nuxt/test-utils/runtime'

   mockNuxtImport('someAutoImport', () => {
     return (value: boolean) => {
       // Mock implementation
       return value
     }
   })

   // Your tests here

2. For imports from your project files (like ~/utils/some-util), you might need to configure the Vitest extension to recognize your project's alias paths. Unfortunately, the knowledge sources don't provide specific information on how to do this with the Vitest extension. You might need to check the Vitest extension documentation or configuration options for alias path settings. 3. Another approach, although it's a workaround, is to use absolute imports instead of the ~ alias in your test files. For example:

   import { doThing } from '../../utils/some-util'

   import { doThing } from '../../utils/some-util'

4. If the issue persists, you might want to try using the nuxt-vitest module, which is designed to integrate Vitest with Nuxt more seamlessly. However, please note that this suggestion is based on inference, as the knowledge sources don't provide specific information about this module in the context of your issue. 5. As a last resort, you could consider running your tests using the CLI instead of the Vitest extension, as you mentioned that the terminal finds Nuxt's auto-imports correctly for your unit tests. Given the limited information in the knowledge sources about this specific issue with the Vitest extension, I recommend reaching out to the Vitest extension developers or the Nuxt community forums for more targeted assistance. They might have encountered similar issues and could provide more specific solutions or workarounds for resolving auto-imports and project imports in the Vitest extension environment. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2d ago

<@277205807937093633> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

Gaming

Programming

Can't get Vitest Extension to resolve Nuxt's auto-imports