Nuxt•4w ago

Testing custom Module.

Hello. I'm developing a Nuxt module, this module have component that is using composable that import/export data from "#build". Component is working in real app environment. But how can I test this type of component?

// module.ts
addTemplate({
    filename: 'ui.options.mjs',
    getContents: () => 'export default ' + JSON.stringify(options)
});
addImports({
    from: resolve('./runtime/composables/useModuleOptions'),
    name: 'useModuleOptions',
    as: 'useModuleOptions'
});


// Composable
import uiOptions from '#build/ui.options.mjs';

export const useModuleOptions = () => {
    return uiOptions;
}


// MyComponent.vue
<script setup>
const moduleOptions = useModuleOptions();
</script>


// Test
import { mountSuspended } from '@nuxt/test-utils/runtime'
import C from '../../src/runtime/components/MyComponent.vue';

const wrapper = mountSuspended(C);

// module.ts
addTemplate({
    filename: 'ui.options.mjs',
    getContents: () => 'export default ' + JSON.stringify(options)
});
addImports({
    from: resolve('./runtime/composables/useModuleOptions'),
    name: 'useModuleOptions',
    as: 'useModuleOptions'
});


// Composable
import uiOptions from '#build/ui.options.mjs';

export const useModuleOptions = () => {
    return uiOptions;
}


// MyComponent.vue
<script setup>
const moduleOptions = useModuleOptions();
</script>


// Test
import { mountSuspended } from '@nuxt/test-utils/runtime'
import C from '../../src/runtime/components/MyComponent.vue';

const wrapper = mountSuspended(C);

My test throw this error. Error: Failed to resolve import "#imports" from "node_modules/@nuxt/test-utils/dist/runtime-utils/index.mjs". Does the file exist?

1 Reply

Tirius•4w ago

Look like problem is that mountSuspended is throw the same error even on very basic empty Vue component. mount method from @vue/test-utils is working for component testing but it can't resolve my composable and throw error.

import { mount } from '@vue/test-utils'

import { mount } from '@vue/test-utils'

So the question is the same, how to test this type of components ? I found out that you can resolve '#build' imports by adding resolve option to vitest.config

{
    resolve: {
        alias: {
            '#build/ui.options.mjs': resolve('./test/mocks/ui.options.js'),
        },
    }
}

{
    resolve: {
        alias: {
            '#build/ui.options.mjs': resolve('./test/mocks/ui.options.js'),
        },
    }
}

So with that setup I was able to test components using @vue/test-utils, but it was needed to remove composable and use direct import of options in components import moduleOptions from '#build/ui.options.mjs';

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