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fix(coverage): enforce order of `vitest:coverage-transform` plugin (#8477)
authored by
Ari Perkkiö
and committed by
GitHub
(Aug 26, 2025, 10:54 AM +0200)
ff5170cf
2c2d1d4c
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-1
test/coverage-test/utils.ts
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test/coverage-test/utils.ts
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import type { CoverageSummary, FileCoverageData } from 'istanbul-lib-coverage'
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import type { UserConfig as ViteUserConfig } from 'vite'
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import type { TestFunction } from 'vitest'
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import type { TestUserConfig } from 'vitest/node'
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import { existsSync, readFileSync } from 'node:fs'
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}
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}
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export async function runVitest(config: TestUserConfig, options = { throwOnError: true }) {
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export async function runVitest(config: TestUserConfig, options = { throwOnError: true }, viteOverrides: ViteUserConfig = {}) {
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const provider = process.env.COVERAGE_PROVIDER as any
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const result = await testUtils.runVitest({
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...config,
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browser: config.browser,
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}, [], 'test', {
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...viteOverrides,
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test: {
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env: {
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COVERAGE_TEST: 'true',
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test/coverage-test/test/transform-plugin-order.istanbul.test.ts
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test/coverage-test/test/transform-plugin-order.istanbul.test.ts
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import { expect } from 'vitest'
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import { customFilePlugin } from '../fixtures/configs/vitest.config.multi-transforms'
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import { readCoverageMap, runVitest, test } from '../utils'
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test('custom `viteOverrides.plugins` work with `vitest:coverage-transform` plugin (#8468)', async () => {
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const viteOverrides = { plugins: [customFilePlugin('1')] }
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await runVitest({
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include: ['fixtures/test/custom-1-syntax.test.ts'],
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coverage: { reporter: 'json' },
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}, undefined, viteOverrides)
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const coverageMap = await readCoverageMap()
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expect(coverageMap.files()).toMatchInlineSnapshot(`
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[
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"<process-cwd>/fixtures/src/covered.custom-1",
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]
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`)
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const fileCoverage = coverageMap.fileCoverageFor('<process-cwd>/fixtures/src/covered.custom-1')
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expect(fileCoverage).toMatchInlineSnapshot(`
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{
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"branches": "0/0 (100%)",
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"functions": "1/2 (50%)",
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"lines": "1/2 (50%)",
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"statements": "1/2 (50%)",
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}
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`)
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})
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test/coverage-test/fixtures/configs/vitest.config.multi-transforms.ts
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test/coverage-test/fixtures/configs/vitest.config.multi-transforms.ts
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/**
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* Plugin for transforming `.custom-1` and/or `.custom-2` files to Javascript
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*/
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function customFilePlugin(postfix: "1" | "2"): Plugin {
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export function customFilePlugin(postfix: "1" | "2"): Plugin {
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function transform(code: MagicString) {
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code.replaceAll(
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"<function covered>",