Hi, in my configuration, I am testing svelte files written in type. In my <c

+1 I also get the same error: <div class="snippet-clipboard-cont

Can you try to change your coverageProvider to <code

This issue remains, replicated and documented here: <a href="https://github.com/raurir

I am also experiencing the same issue that <a class="user-mention notranslate" data-ho

note - this is a hack/workaround 🔨 <a class="user-mention notransla

I've bumped the jest version from 27.5.1 to <code cla

Coverage of untested files not collected about svelte-jester HOT 8 OPEN

marekdedic commented on September 23, 2024 1

Coverage of untested files not collected

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Comments (8)

tobiasbueschel commented on September 23, 2024 2

I also get the same error:

Running coverage on untested files...Failed to collect coverage from /path/to-app/src/components/SomeComponent/index.svelte
ERROR: Cannot find module 'file:///path/to-app/svelte.config.js'
Require stack:
- /path/to-app/node_modules/svelte-jester/dist/transformer.cjs
- /path/to-app/node_modules/@jest/reporters/node_modules/jest-util/build/requireOrImportModule.js
- /path/to-app/node_modules/@jest/reporters/node_modules/jest-util/build/index.js
- /path/to-app/node_modules/@jest/reporters/node_modules/@jest/transform/build/shouldInstrument.js
- /path/to-app/node_modules/@jest/reporters/node_modules/@jest/transform/build/ScriptTransformer.js
- /path/to-app/node_modules/@jest/reporters/node_modules/@jest/transform/build/index.js
- /path/to-app/node_modules/@jest/reporters/build/generateEmptyCoverage.js
- /path/to-app/node_modules/@jest/reporters/build/CoverageWorker.js
- /path/to-app/node_modules/jest-worker/build/workers/processChild.js
STACK: Error: Cannot find module 'file:///path/to-app/svelte.config.js'
Require stack:
- /path/to-app/node_modules/svelte-jester/dist/transformer.cjs
- /path/to-app/node_modules/@jest/reporters/node_modules/jest-util/build/requireOrImportModule.js
- /path/to-app/node_modules/@jest/reporters/node_modules/jest-util/build/index.js
- /path/to-app/node_modules/@jest/reporters/node_modules/@jest/transform/build/shouldInstrument.js
- /path/to-app/node_modules/@jest/reporters/node_modules/@jest/transform/build/ScriptTransformer.js
- /path/to-app/node_modules/@jest/reporters/node_modules/@jest/transform/build/index.js
- /path/to-app/node_modules/@jest/reporters/build/generateEmptyCoverage.js
- /path/to-app/node_modules/@jest/reporters/build/CoverageWorker.js
- /path/to-app/node_modules/jest-worker/build/workers/processChild.js
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15)
    at Function.Module._load (node:internal/modules/cjs/loader:778:27)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at /path/to-app/node_modules/svelte-jester/dist/transformer.cjs:77:141
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
Failed to collect coverage from /path/to-app/src/components/_layout.svelte
ERROR: Cannot find module 'file:///path/to-app/svelte.config.js'
Require stack:
//...

Here is my jest config - v8 was unfortunately not an option for me as it outputs an incorrect test coverage for my Svelte components:

import type { Config } from '@jest/types';

const config: Config.InitialOptions = {
  preset: 'ts-jest',
  testEnvironment: 'jsdom',
  verbose: true,
  testMatch: ['<rootDir>/src/**/*.test.(js|ts)'],
  transform: {
    '^.+\\.svelte$': [
      'svelte-jester',
      {
        preprocess: true
      }
    ],
    '\\.svg$': '<rootDir>/transformSvg.js',
    '^.+\\.(ts|js)$': 'ts-jest',
    '.+\\.(css|styl|less|sass|scss)$': 'jest-css-modules-transform'
  },
  setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
  moduleFileExtensions: ['js', 'ts', 'svelte'],
  moduleDirectories: ['node_modules', '<rootDir>/src'],
  coverageProvider: 'babel', // v8 is still experimental and outputs incorrect coverage stats for us
  collectCoverageFrom: ['<rootDir>/src/**/*.(svelte|ts)', '!<rootDir>/src/**/*.stories.svelte'],
  coveragePathIgnorePatterns: ['\\.svg$', '/node_modules/'],
};

export default config;

Once I add the untested file to a test case, the error for it disappears => @rvisharma thanks for your workaround!

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sebastianrothe commented on September 23, 2024 1

Can you try to change your coverageProvider to v8?

I think you have to set this as well: moduleFileExtensions: ["ts", "svelte", "js"],

Can you provide a sample repo, where the bug surfaces?

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raurir commented on September 23, 2024 1

This issue remains, replicated and documented here: https://github.com/raurir/svelte-code-linting#testing

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cabreraalex commented on September 23, 2024 1

+1 having same issue

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cooperwalbrun commented on September 23, 2024 1

I am also experiencing the same issue that @tobiasbueschel and @raurir mentioned, though I am not using Babel in my setup.

Here is my jest.config.cjs:

module.exports = {
  moduleFileExtensions: ['js', 'ts', 'svelte'],
  transform: {
    '^.+\\.svelte$': [
      'svelte-jester',
      {
        preprocess: true
      }
    ],
    '^.+\\.ts$': 'ts-jest'
  },
  coverageReporters: ['json', 'lcov', 'text', 'clover', 'html'],
  collectCoverageFrom: ['src/**/*.{ts,svelte}', '!src/*.d.ts']
};

I get the same error message:

STACK: Error: Cannot find module 'file:///path/to/my/project/svelte.config.js'

Edit: I added coverageProvider: "v8" to my jest.config.cjs, and it appears to be working fine now. I am using v2.3.2 of svelte-jester if it helps anyone else.

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rvisharma commented on September 23, 2024

note - this is a hack/workaround 🔨

@marekdedic - was stuck with same issue, couldn't find a proper solution for this, but was able to find a workaround for it based on this - jestjs/jest#1211 (comment)

the linked issue, creates a file at runtime and with all require statements, instead i added a dummy spec file coverage.spec.js with below content, that basically traverses all *.svelte files and requires all of them

const glob = require('glob');
const cwd = require('path').join(process.cwd(), 'app', 'modules');
const pattern = '*.svelte';

glob
  .sync(pattern, { cwd, matchBase: true, nosort: true })
  .forEach((file) => require(file));

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marekdedic commented on September 23, 2024

Hi,I have previously tried both of these, but not both of them at once, which works! Switching back to babel however makes the tests error out completely :/

You can see it in action on this branch of my repo: https://github.com/skaut/shared-drive-mover/tree/svelte-jester-coverage-test

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ritchieanesco commented on September 23, 2024

I've bumped the jest version from 27.5.1 to 29.4.3 and now also getting the error

STACK: Error: Cannot find module 'file:///path/to/my/project/svelte.config.js'

when trying to include --coverage argument.

I get the above error message when using babel for coverageProvider

However when using v8 i get

SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at /Users/<user>/w/xplore-ui/node_modules/@jest/reporters/build/CoverageReporter.js:507:37

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Coverage of untested files not collected about svelte-jester HOT 8 OPEN

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