fix(coverage): support overriding exclude

packages/coverage-istanbul/src/provider.ts

@@ -15,8 +15,6 @@ import type {
 } from 'vitest'
 import {
   coverageConfigDefaults,
-  defaultExclude,
-  defaultInclude,
 } from 'vitest/config'
 import { BaseCoverageProvider } from 'vitest/coverage'
 import c from 'picocolors'
@@ -120,11 +118,8 @@ export class IstanbulCoverageProvider
 
     this.testExclude = new _TestExclude({
       cwd: ctx.config.root,
-      include:
-        typeof this.options.include === 'undefined'
-          ? undefined
-          : [...this.options.include],
-      exclude: [...defaultExclude, ...defaultInclude, ...this.options.exclude],
+      include: this.options.include,
+      exclude: this.options.exclude,
       excludeNodeModules: true,
       extension: this.options.extension,
       relativePath: !this.options.allowExternal,

packages/coverage-v8/src/provider.ts

@@ -25,8 +25,6 @@ import { cleanUrl } from 'vite-node/utils'
 import type { EncodedSourceMap, FetchResult } from 'vite-node'
 import {
   coverageConfigDefaults,
-  defaultExclude,
-  defaultInclude,
 } from 'vitest/config'
 import { BaseCoverageProvider } from 'vitest/coverage'
 import type {
@@ -126,11 +124,8 @@ export class V8CoverageProvider
 
     this.testExclude = new _TestExclude({
       cwd: ctx.config.root,
-      include:
-        typeof this.options.include === 'undefined'
-          ? undefined
-          : [...this.options.include],
-      exclude: [...defaultExclude, ...defaultInclude, ...this.options.exclude],
+      include: this.options.include,
+      exclude: this.options.exclude,
       excludeNodeModules: true,
       extension: this.options.extension,
       relativePath: !this.options.allowExternal,

packages/vitest/src/defaults.ts

@@ -43,6 +43,8 @@ const defaultCoverageExcludes = [
   '**/{karma,rollup,webpack,vite,vitest,jest,ava,babel,nyc,cypress,tsup,build}.config.*',
   '**/vitest.{workspace,projects}.[jt]s?(on)',
   '**/.{eslint,mocha,prettier}rc.{?(c|m)js,yml}',
+  ...defaultExclude,
+  ...defaultInclude,
 ]
 
 // These are the generic defaults for coverage. Providers may also set some provider specific defaults.

test/coverage-test/test/include-exclude.test.ts

@@ -0,0 +1,39 @@
+import { expect } from 'vitest'
+import { coverageTest, normalizeURL, readCoverageMap, runVitest, test } from '../utils'
+
+test('default exclude should ignore test files', async () => {
+  await runVitest({
+    include: [normalizeURL(import.meta.url)],
+    coverage: {
+      all: true,
+      reporter: 'json',
+      include: ['fixtures/test/math.test.ts'],
+    },
+  })
+
+  const coverageMap = await readCoverageMap()
+  expect(coverageMap.files()).toMatchInlineSnapshot(`[]`)
+})
+
+test('overriden exclude should not apply defaults', async () => {
+  await runVitest({
+    include: [normalizeURL(import.meta.url)],
+    coverage: {
+      all: true,
+      reporter: 'json',
+      include: ['fixtures/test/math.test.ts'],
+      exclude: ['dont-match-anything'],
+    },
+  })
+
+  const coverageMap = await readCoverageMap()
+  expect(coverageMap.files()).toMatchInlineSnapshot(`
+    [
+      "<process-cwd>/fixtures/test/math.test.ts",
+    ]
+  `)
+})
+
+coverageTest('dummy', () => {
+  expect(1 + 1).toBe(2)
+})