diff --git a/package.json b/package.json
index acf30a45..e6278b8f 100644
--- a/package.json
+++ b/package.json
@@ -119,8 +119,7 @@
       "node_modules"
     ],
     "moduleNameMapper": {
-      "^bunchee$": "<rootDir>/src/index.ts",
-      "^testing-utils$": "<rootDir>/test/integration/utils.ts"
+      "^bunchee$": "<rootDir>/src/index.ts"
     },
     "transform": {
       "^.+\\.(t|j)sx?$": [
diff --git a/test/typing.test.ts b/src/typing.test.ts
similarity index 89%
rename from test/typing.test.ts
rename to src/typing.test.ts
index 411f762e..368ca227 100644
--- a/test/typing.test.ts
+++ b/src/typing.test.ts
@@ -1,5 +1,5 @@
 // Import from generated files instead of using tsconfig alias
-import { bundle, type BundleConfig } from 'bunchee'
+import { bundle, type BundleConfig } from './index'
 
 describe('types', () => {
   it('should be able to import the node API and use correct typings', async () => {
diff --git a/test/unit/exports.regacy-test.ts b/test/_legacy/exports.test.txt
similarity index 100%
rename from test/unit/exports.regacy-test.ts
rename to test/_legacy/exports.test.txt
diff --git a/test/cli/basic/index.test.ts b/test/cli/basic/index.test.ts
index b70f4ef8..29f743f1 100644
--- a/test/cli/basic/index.test.ts
+++ b/test/cli/basic/index.test.ts
@@ -1,5 +1,5 @@
 import fs from 'fs'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli basic should work properly`, async () => {
diff --git a/test/cli/cjs-relative-imports/index.test.ts b/test/cli/cjs-relative-imports/index.test.ts
index 5c2f5382..baf6c8e8 100644
--- a/test/cli/cjs-relative-imports/index.test.ts
+++ b/test/cli/cjs-relative-imports/index.test.ts
@@ -1,5 +1,5 @@
 import fs from 'fs'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli cjs-relative-imports should work properly`, async () => {
diff --git a/test/cli/dts-bundle/index.test.ts b/test/cli/dts-bundle/index.test.ts
index 88852c38..c65946ab 100644
--- a/test/cli/dts-bundle/index.test.ts
+++ b/test/cli/dts-bundle/index.test.ts
@@ -1,8 +1,7 @@
 import fs from 'fs'
 import fsp from 'fs/promises'
 import { join } from 'path'
-import { createCliTest } from '../utils'
-import { deleteFile } from '../../testing-utils'
+import { createCliTest, deleteFile } from '../../testing-utils'
 
 describe('cli', () => {
   const dir = __dirname
diff --git a/test/cli/dts/index.test.ts b/test/cli/dts/index.test.ts
index 9b42bf8c..6726ce9f 100644
--- a/test/cli/dts/index.test.ts
+++ b/test/cli/dts/index.test.ts
@@ -1,6 +1,6 @@
 import fs from 'fs'
 import path from 'path'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli dts should work properly`, async () => {
diff --git a/test/cli/env-var/index.test.ts b/test/cli/env-var/index.test.ts
index 853736f3..b24b0839 100644
--- a/test/cli/env-var/index.test.ts
+++ b/test/cli/env-var/index.test.ts
@@ -1,5 +1,5 @@
 import fs from 'fs'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli env-var should work properly`, async () => {
diff --git a/test/cli/externals/index.test.ts b/test/cli/externals/index.test.ts
index d95e5d32..ab8a76f9 100644
--- a/test/cli/externals/index.test.ts
+++ b/test/cli/externals/index.test.ts
@@ -1,5 +1,5 @@
 import fs from 'fs'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli external should work properly`, async () => {
diff --git a/test/cli/no-dts/index.test.ts b/test/cli/no-dts/index.test.ts
index 556ee526..dc2dccd7 100644
--- a/test/cli/no-dts/index.test.ts
+++ b/test/cli/no-dts/index.test.ts
@@ -1,6 +1,6 @@
 import fs from 'fs'
 import path from 'path'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli no-dts option should work properly`, async () => {
diff --git a/test/cli/no-entry/index.test.ts b/test/cli/no-entry/index.test.ts
index 9ab578b0..5f3eb831 100644
--- a/test/cli/no-entry/index.test.ts
+++ b/test/cli/no-entry/index.test.ts
@@ -1,4 +1,4 @@
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli no-entry should work properly`, async () => {
diff --git a/test/cli/output-in-watch/index.test.ts b/test/cli/output-in-watch/index.test.ts
index 25f3fb3b..3fa3b05c 100644
--- a/test/cli/output-in-watch/index.test.ts
+++ b/test/cli/output-in-watch/index.test.ts
@@ -1,4 +1,4 @@
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli output-in-watch should work properly`, async () => {
diff --git a/test/cli/target/index.test.ts b/test/cli/target/index.test.ts
index 7df6ecb7..746e2712 100644
--- a/test/cli/target/index.test.ts
+++ b/test/cli/target/index.test.ts
@@ -1,5 +1,5 @@
 import fs from 'fs'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 
 describe('cli', () => {
   it(`cli es2020-target should work properly`, async () => {
diff --git a/test/cli/workspace/index.test.ts b/test/cli/workspace/index.test.ts
index ec6d4eb3..d2100c9c 100644
--- a/test/cli/workspace/index.test.ts
+++ b/test/cli/workspace/index.test.ts
@@ -1,5 +1,5 @@
 import fs from 'fs'
-import { createCliTest } from '../utils'
+import { createCliTest } from '../../testing-utils'
 import path from 'path'
 
 describe('cli', () => {
diff --git a/test/fixtures/integration-test-template/index.test.ts b/test/fixtures/integration-test-template/index.test.ts
index 0e1beedb..26ccd7e9 100644
--- a/test/fixtures/integration-test-template/index.test.ts
+++ b/test/fixtures/integration-test-template/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertContainFiles } from 'testing-utils'
+import { createIntegrationTest, assertContainFiles } from '../../testing-utils'
 
 describe('integration - <name>', () => {
   it('should work', async () => {
diff --git a/test/integration/basic-jsx/index.test.ts b/test/integration/basic-jsx/index.test.ts
index 91ec46e6..7e52be9a 100644
--- a/test/integration/basic-jsx/index.test.ts
+++ b/test/integration/basic-jsx/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertContainFiles } from '../utils'
+import { createIntegrationTest, assertContainFiles } from '../../testing-utils'
 
 describe('integration basic-jsx', () => {
   it('should work with basic JSX format', async () => {
diff --git a/test/integration/bin/cts/index.test.ts b/test/integration/bin/cts/index.test.ts
index dd5284fb..4cd5d595 100644
--- a/test/integration/bin/cts/index.test.ts
+++ b/test/integration/bin/cts/index.test.ts
@@ -1,4 +1,7 @@
-import { assertFilesContent, createIntegrationTest } from '../../utils'
+import {
+  assertFilesContent,
+  createIntegrationTest,
+} from '../../../testing-utils'
 
 describe('integration bin/cts', () => {
   it('should work with bin as .cts extension', async () => {
diff --git a/test/integration/bin/multi-path/index.test.ts b/test/integration/bin/multi-path/index.test.ts
index 617251b1..be441212 100644
--- a/test/integration/bin/multi-path/index.test.ts
+++ b/test/integration/bin/multi-path/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertFilesContent,
   createIntegrationTest,
   isWindows,
-} from '../../utils'
+} from '../../../testing-utils'
 
 describe('integration bin/multi-path', () => {
   // TODO: handle the transform error on windows
diff --git a/test/integration/bin/patch-binary/index.test.ts b/test/integration/bin/patch-binary/index.test.ts
index 5d7a7345..9e8ff8ee 100644
--- a/test/integration/bin/patch-binary/index.test.ts
+++ b/test/integration/bin/patch-binary/index.test.ts
@@ -2,7 +2,7 @@ import {
   createIntegrationTest,
   assertContainFiles,
   assertFilesContent,
-} from '../../utils'
+} from '../../../testing-utils'
 
 describe('integration bin/patch-binary', () => {
   it('should patch binary directive', async () => {
diff --git a/test/integration/bin/single-path/index.test.ts b/test/integration/bin/single-path/index.test.ts
index 978f8f4f..facb1ba8 100644
--- a/test/integration/bin/single-path/index.test.ts
+++ b/test/integration/bin/single-path/index.test.ts
@@ -4,7 +4,7 @@ import {
   assertFilesContent,
   getFileNamesFromDirectory,
   isWindows,
-} from '../../utils'
+} from '../../../testing-utils'
 
 describe('integration bin/single-path', () => {
   // TODO: handle the transform error on windows
diff --git a/test/integration/browserslist/index.test.ts b/test/integration/browserslist/index.test.ts
index fa2d7742..4aca0a14 100644
--- a/test/integration/browserslist/index.test.ts
+++ b/test/integration/browserslist/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('browserslist', () => {
   it('should work with basic JSX format', async () => {
diff --git a/test/integration/conflicted-entry/conflicted-entry.test.ts b/test/integration/conflicted-entry/conflicted-entry.test.ts
index 31e856a6..4295e60c 100644
--- a/test/integration/conflicted-entry/conflicted-entry.test.ts
+++ b/test/integration/conflicted-entry/conflicted-entry.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 
 describe('integration - conflicted-entry', () => {
   it('should error on conflicted entries', async () => {
diff --git a/test/integration/default-node-mjs/index.test.ts b/test/integration/default-node-mjs/index.test.ts
index 2fca424b..9fd7b2dd 100644
--- a/test/integration/default-node-mjs/index.test.ts
+++ b/test/integration/default-node-mjs/index.test.ts
@@ -1,5 +1,5 @@
 import { readFile } from 'fs/promises'
-import { createIntegrationTest, existsFile } from '../utils'
+import { createIntegrationTest, existsFile } from '../../testing-utils'
 
 describe('integration default-node-mjs', () => {
   it('should work with .mjs extension', async () => {
diff --git a/test/integration/dev-prod-convention-reexport/index.test.ts b/test/integration/dev-prod-convention-reexport/index.test.ts
index e260babc..b4b65e1f 100644
--- a/test/integration/dev-prod-convention-reexport/index.test.ts
+++ b/test/integration/dev-prod-convention-reexport/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('integration dev-prod-convention-reexport', () => {
   it('should work with dev and prod optimize conditions', async () => {
diff --git a/test/integration/dev-prod-convention/index.test.ts b/test/integration/dev-prod-convention/index.test.ts
index acd48cef..e70ff04b 100644
--- a/test/integration/dev-prod-convention/index.test.ts
+++ b/test/integration/dev-prod-convention/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('integration dev-prod-convention', () => {
   it('should work with dev and prod optimize conditions', async () => {
diff --git a/test/integration/dev-prod-nested-convention/index.test.ts b/test/integration/dev-prod-nested-convention/index.test.ts
index 742a1c02..3173645c 100644
--- a/test/integration/dev-prod-nested-convention/index.test.ts
+++ b/test/integration/dev-prod-nested-convention/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('integration dev-prod-nested-convention', () => {
   it('should work with dev and prod optimize conditions', async () => {
diff --git a/test/integration/dev-prod-special-convention/index.test.ts b/test/integration/dev-prod-special-convention/index.test.ts
index f68c5c55..e9e2497b 100644
--- a/test/integration/dev-prod-special-convention/index.test.ts
+++ b/test/integration/dev-prod-special-convention/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('integration dev-prod-special-convention', () => {
   it('should work with dev prod and special optimize conditions', async () => {
diff --git a/test/integration/duplicate-entries-partial-specified/index.test.ts b/test/integration/duplicate-entries-partial-specified/index.test.ts
index 8d983f12..383c5a23 100644
--- a/test/integration/duplicate-entries-partial-specified/index.test.ts
+++ b/test/integration/duplicate-entries-partial-specified/index.test.ts
@@ -1,4 +1,7 @@
-import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+import {
+  createIntegrationTest,
+  getFileNamesFromDirectory,
+} from '../../testing-utils'
 
 describe('integration duplicate-entries-partial-specified', () => {
   it('should not generate js types paths if not specified', async () => {
diff --git a/test/integration/dynamic-require/dynamic-require.test.ts b/test/integration/dynamic-require/dynamic-require.test.ts
index 593d0645..03eca612 100644
--- a/test/integration/dynamic-require/dynamic-require.test.ts
+++ b/test/integration/dynamic-require/dynamic-require.test.ts
@@ -1,5 +1,8 @@
 import fs from 'fs'
-import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+import {
+  createIntegrationTest,
+  getFileNamesFromDirectory,
+} from '../../testing-utils'
 
 describe('integration - dynamic-require', () => {
   it('should work', async () => {
diff --git a/test/integration/edge-variable/index.test.ts b/test/integration/edge-variable/index.test.ts
index 92b322b1..bd04cce5 100644
--- a/test/integration/edge-variable/index.test.ts
+++ b/test/integration/edge-variable/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('integration edge-variable', () => {
   it('should work with edge export condition', async () => {
diff --git a/test/integration/entry-index-index/index.test.ts b/test/integration/entry-index-index/index.test.ts
index 61e0da24..966d1bf9 100644
--- a/test/integration/entry-index-index/index.test.ts
+++ b/test/integration/entry-index-index/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertFilesContent } from '../utils'
+import { createIntegrationTest, assertFilesContent } from '../../testing-utils'
 
 describe('integration entry-index-index', () => {
   it('should work with index file inside index directory', async () => {
diff --git a/test/integration/esm-pkg-cjs-main-field/index.test.ts b/test/integration/esm-pkg-cjs-main-field/index.test.ts
index f34f0bac..bcf9b1f4 100644
--- a/test/integration/esm-pkg-cjs-main-field/index.test.ts
+++ b/test/integration/esm-pkg-cjs-main-field/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertContainFiles } from '../utils'
+import { createIntegrationTest, assertContainFiles } from '../../testing-utils'
 
 describe('integration esm-pkg-cjs-main-field', () => {
   it('should work with ESM package with CJS main field ', async () => {
diff --git a/test/integration/esm-shims/index.test.ts b/test/integration/esm-shims/index.test.ts
index c98b6453..67c7b7ed 100644
--- a/test/integration/esm-shims/index.test.ts
+++ b/test/integration/esm-shims/index.test.ts
@@ -2,7 +2,7 @@ import {
   createIntegrationTest,
   assertFilesContent,
   getFileContents,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration esm-shims', () => {
   it('should work with ESM shims', async () => {
diff --git a/test/integration/externals/index.test.ts b/test/integration/externals/index.test.ts
index d813cfd8..7ed524d9 100644
--- a/test/integration/externals/index.test.ts
+++ b/test/integration/externals/index.test.ts
@@ -1,5 +1,5 @@
 import { readFile } from 'fs/promises'
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 
 describe('integration externals', () => {
   it('should handle externals', async () => {
diff --git a/test/integration/import-fallback/index.test.ts b/test/integration/import-fallback/index.test.ts
index ac412f6b..b965ef13 100644
--- a/test/integration/import-fallback/index.test.ts
+++ b/test/integration/import-fallback/index.test.ts
@@ -1,5 +1,5 @@
 import { readFile } from 'fs/promises'
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 
 describe('integration import fallback', () => {
   it('should handle import fallback', async () => {
diff --git a/test/integration/js-bad-configured-types/index.test.ts b/test/integration/js-bad-configured-types/index.test.ts
index 85f257af..3f5ca3e3 100644
--- a/test/integration/js-bad-configured-types/index.test.ts
+++ b/test/integration/js-bad-configured-types/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 
 describe('integration js-bad-configured-types', () => {
   it('should error when types is not correctly configured', async () => {
diff --git a/test/integration/js-only/index.test.ts b/test/integration/js-only/index.test.ts
index 33424c04..3539d7c1 100644
--- a/test/integration/js-only/index.test.ts
+++ b/test/integration/js-only/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, existsFile } from '../utils'
+import { createIntegrationTest, existsFile } from '../../testing-utils'
 
 describe('integration js-only', () => {
   beforeEach(() => {
diff --git a/test/integration/lint/cjs-pkg-esm-main-field/index.test.ts b/test/integration/lint/cjs-pkg-esm-main-field/index.test.ts
index f2c75431..18240f87 100644
--- a/test/integration/lint/cjs-pkg-esm-main-field/index.test.ts
+++ b/test/integration/lint/cjs-pkg-esm-main-field/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../../utils'
+import { createIntegrationTest } from '../../../testing-utils'
 
 describe('integration cjs-pkg-esm-main-field', () => {
   it('should warn if main field with .mjs extension in CJS package', async () => {
diff --git a/test/integration/lint/invalid-exports-cjs/index.test.ts b/test/integration/lint/invalid-exports-cjs/index.test.ts
index 274bdb25..33a161cf 100644
--- a/test/integration/lint/invalid-exports-cjs/index.test.ts
+++ b/test/integration/lint/invalid-exports-cjs/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../../utils'
+import { createIntegrationTest } from '../../../testing-utils'
 
 describe('integration invalid-exports-cjs', () => {
   it('should warn on invalid exports as CJS', async () => {
diff --git a/test/integration/lint/invalid-exports-esm/index.test.ts b/test/integration/lint/invalid-exports-esm/index.test.ts
index 6721e318..a4d10285 100644
--- a/test/integration/lint/invalid-exports-esm/index.test.ts
+++ b/test/integration/lint/invalid-exports-esm/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../../utils'
+import { createIntegrationTest } from '../../../testing-utils'
 
 describe('integration invalid-exports-esm', () => {
   it('should warn on invalid exports as ESM', async () => {
diff --git a/test/integration/lint/missing-files-exports/index.test.ts b/test/integration/lint/missing-files-exports/index.test.ts
index d202a37e..146a04c1 100644
--- a/test/integration/lint/missing-files-exports/index.test.ts
+++ b/test/integration/lint/missing-files-exports/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../../utils'
+import { createIntegrationTest } from '../../../testing-utils'
 
 describe('integration - lint - missing-files-exports', () => {
   it('should warn on missing files', async () => {
diff --git a/test/integration/lint/missing-files-main/index.test.ts b/test/integration/lint/missing-files-main/index.test.ts
index ae26caba..6d271c17 100644
--- a/test/integration/lint/missing-files-main/index.test.ts
+++ b/test/integration/lint/missing-files-main/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest } from '../../utils'
+import { createIntegrationTest } from '../../../testing-utils'
 
 describe('integration - lint - missing-files-main', () => {
   it('should warn on missing files', async () => {
diff --git a/test/integration/lint/single-entry/index.test.ts b/test/integration/lint/single-entry/index.test.ts
index 5bb00824..13e19821 100644
--- a/test/integration/lint/single-entry/index.test.ts
+++ b/test/integration/lint/single-entry/index.test.ts
@@ -3,7 +3,7 @@ import {
   assertFilesContent,
   stripANSIColor,
 } from '../../../testing-utils'
-import { createIntegrationTest } from '../../utils'
+import { createIntegrationTest } from '../../../testing-utils'
 
 describe('integration single-entry', () => {
   it('should warn on invalid exports as CJS', async () => {
diff --git a/test/integration/mixed-directives/mixed-directives.test.ts b/test/integration/mixed-directives/mixed-directives.test.ts
index 2e65f0c7..9f91c465 100644
--- a/test/integration/mixed-directives/mixed-directives.test.ts
+++ b/test/integration/mixed-directives/mixed-directives.test.ts
@@ -1,5 +1,8 @@
 import { readFileSync } from 'fs'
-import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+import {
+  createIntegrationTest,
+  getFileNamesFromDirectory,
+} from '../../testing-utils'
 
 describe('integration - mixed-directives', () => {
   it('should work with js only project', async () => {
diff --git a/test/integration/monorepo-composite-no-incremental/index.test.ts b/test/integration/monorepo-composite-no-incremental/index.test.ts
index 285de2f1..0e5e1612 100644
--- a/test/integration/monorepo-composite-no-incremental/index.test.ts
+++ b/test/integration/monorepo-composite-no-incremental/index.test.ts
@@ -1,5 +1,5 @@
 import { join } from 'path'
-import { assertContainFiles, createIntegrationTest } from '../utils'
+import { assertContainFiles, createIntegrationTest } from '../../testing-utils'
 
 describe('integration monorepo-composite-no-incremental', () => {
   it('should succeed the build', async () => {
diff --git a/test/integration/monorepo-composite/index.test.ts b/test/integration/monorepo-composite/index.test.ts
index e280d1f7..10a318b2 100644
--- a/test/integration/monorepo-composite/index.test.ts
+++ b/test/integration/monorepo-composite/index.test.ts
@@ -1,5 +1,5 @@
 import { join } from 'path'
-import { assertContainFiles, createIntegrationTest } from '../utils'
+import { assertContainFiles, createIntegrationTest } from '../../testing-utils'
 
 describe('integration monorepo-composite', () => {
   it('should succeed the build', async () => {
diff --git a/test/integration/multi-entries/index.test.ts b/test/integration/multi-entries/index.test.ts
index b6828fb0..8973cff7 100644
--- a/test/integration/multi-entries/index.test.ts
+++ b/test/integration/multi-entries/index.test.ts
@@ -3,7 +3,7 @@ import {
   createIntegrationTest,
   getChunkFileNamesFromLog,
   stripANSIColor,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration multi-entries', () => {
   it('should contain files', async () => {
diff --git a/test/integration/multi-exports-ts/index.test.ts b/test/integration/multi-exports-ts/index.test.ts
index 7985c248..60907588 100644
--- a/test/integration/multi-exports-ts/index.test.ts
+++ b/test/integration/multi-exports-ts/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegration, assertFilesContent } from '../utils'
+import { createIntegration, assertFilesContent } from '../../testing-utils'
 
 describe('integration multi-exports', () => {
   const { dir } = createIntegration({
diff --git a/test/integration/multi-types/index.test.ts b/test/integration/multi-types/index.test.ts
index b01370d1..910afd8f 100644
--- a/test/integration/multi-types/index.test.ts
+++ b/test/integration/multi-types/index.test.ts
@@ -3,7 +3,7 @@ import {
   createIntegrationTest,
   getChunkFileNamesFromLog,
   stripANSIColor,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration multi-types', () => {
   it('should contain files', async () => {
diff --git a/test/integration/nested-exports/index.test.ts b/test/integration/nested-exports/index.test.ts
index 597103d5..e5b2d49c 100644
--- a/test/integration/nested-exports/index.test.ts
+++ b/test/integration/nested-exports/index.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration nested-exports', () => {
   it('should work with nested path in exports', async () => {
diff --git a/test/integration/no-clean/index.test.ts b/test/integration/no-clean/index.test.ts
index a19eca19..80222425 100644
--- a/test/integration/no-clean/index.test.ts
+++ b/test/integration/no-clean/index.test.ts
@@ -5,7 +5,7 @@ import {
   assertContainFiles,
   assertFilesContent,
   createIntegration,
-} from '../utils'
+} from '../../testing-utils'
 import { existsSync } from 'fs'
 
 describe('integration - no-clean flag', () => {
diff --git a/test/integration/node-mixed-legacy-modern-entries/index.test.ts b/test/integration/node-mixed-legacy-modern-entries/index.test.ts
index ed7589ec..30fd3321 100644
--- a/test/integration/node-mixed-legacy-modern-entries/index.test.ts
+++ b/test/integration/node-mixed-legacy-modern-entries/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertContainFiles } from '../utils'
+import { createIntegrationTest, assertContainFiles } from '../../testing-utils'
 
 describe('node-mixed-legacy-modern-entries', () => {
   it('should deduplicate entries', async () => {
diff --git a/test/integration/output-short/index.test.ts b/test/integration/output-short/index.test.ts
index 0ad9d746..df7b68c2 100644
--- a/test/integration/output-short/index.test.ts
+++ b/test/integration/output-short/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, stripANSIColor } from '../utils'
+import { createIntegrationTest, stripANSIColor } from '../../testing-utils'
 
 const getOutputSizeColumnIndex = (line: string): number => {
   let match
diff --git a/test/integration/output/index.test.ts b/test/integration/output/index.test.ts
index faa70cb7..495f7488 100644
--- a/test/integration/output/index.test.ts
+++ b/test/integration/output/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, stripANSIColor } from '../utils'
+import { createIntegrationTest, stripANSIColor } from '../../testing-utils'
 
 const getOutputSizeColumnIndex = (line: string): number => {
   let match
diff --git a/test/integration/pkg-exports-default/index.test.ts b/test/integration/pkg-exports-default/index.test.ts
index fdcae4b4..85f0be1a 100644
--- a/test/integration/pkg-exports-default/index.test.ts
+++ b/test/integration/pkg-exports-default/index.test.ts
@@ -1,6 +1,6 @@
 import { promises as fsp } from 'fs'
 import { join } from 'path'
-import { assertContainFiles, createIntegrationTest } from '../utils'
+import { assertContainFiles, createIntegrationTest } from '../../testing-utils'
 
 describe('integration pkg-exports-default', () => {
   it('should generate proper assets with js', async () => {
diff --git a/test/integration/pkg-exports-js/index.test.ts b/test/integration/pkg-exports-js/index.test.ts
index e2926a97..078e4148 100644
--- a/test/integration/pkg-exports-js/index.test.ts
+++ b/test/integration/pkg-exports-js/index.test.ts
@@ -1,4 +1,4 @@
-import { assertContainFiles, createIntegrationTest } from '../utils'
+import { assertContainFiles, createIntegrationTest } from '../../testing-utils'
 
 describe('integration pkg-exports-js', () => {
   it('should generate proper assets with js', async () => {
diff --git a/test/integration/pkg-exports-ts-rsc/index.test.ts b/test/integration/pkg-exports-ts-rsc/index.test.ts
index ce52556e..3d3e3484 100644
--- a/test/integration/pkg-exports-ts-rsc/index.test.ts
+++ b/test/integration/pkg-exports-ts-rsc/index.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration pkg-exports-ts-rsc', () => {
   it('should generate proper assets for rsc condition with ts', async () => {
diff --git a/test/integration/prepare-js/index.test.ts b/test/integration/prepare-js/index.test.ts
index 96a8e3e3..133a64c8 100644
--- a/test/integration/prepare-js/index.test.ts
+++ b/test/integration/prepare-js/index.test.ts
@@ -4,7 +4,7 @@ import {
   assertContainFiles,
   createIntegrationTest,
   stripANSIColor,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration prepare-js', () => {
   const dir = __dirname
diff --git a/test/integration/prepare-ts-with-pkg-json/index.test.ts b/test/integration/prepare-ts-with-pkg-json/index.test.ts
index 273106e5..885bf98e 100644
--- a/test/integration/prepare-ts-with-pkg-json/index.test.ts
+++ b/test/integration/prepare-ts-with-pkg-json/index.test.ts
@@ -1,6 +1,10 @@
 import fsp from 'fs/promises'
 import { join } from 'path'
-import { assertContainFiles, createIntegrationTest, deleteFile } from '../utils'
+import {
+  assertContainFiles,
+  createIntegrationTest,
+  deleteFile,
+} from '../../testing-utils'
 
 describe('integration prepare-ts-with-pkg-json', () => {
   const dir = __dirname
diff --git a/test/integration/prepare-ts-with-test-file/index.test.ts b/test/integration/prepare-ts-with-test-file/index.test.ts
index 55e7ff7c..19841c46 100644
--- a/test/integration/prepare-ts-with-test-file/index.test.ts
+++ b/test/integration/prepare-ts-with-test-file/index.test.ts
@@ -1,6 +1,10 @@
 import fsp from 'fs/promises'
 import { join } from 'path'
-import { assertContainFiles, createIntegrationTest, deleteFile } from '../utils'
+import {
+  assertContainFiles,
+  createIntegrationTest,
+  deleteFile,
+} from '../../testing-utils'
 
 describe('integration prepare-ts-with-test-file', () => {
   const dir = __dirname
diff --git a/test/integration/prepare-ts/index.test.ts b/test/integration/prepare-ts/index.test.ts
index 2012bfb0..14a9bffc 100644
--- a/test/integration/prepare-ts/index.test.ts
+++ b/test/integration/prepare-ts/index.test.ts
@@ -5,7 +5,7 @@ import {
   createIntegrationTest,
   deleteFile,
   stripANSIColor,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration prepare-ts', () => {
   beforeAll(async () => {
diff --git a/test/integration/raw-data/index.test.ts b/test/integration/raw-data/index.test.ts
index 4ecb60c5..79f83efa 100644
--- a/test/integration/raw-data/index.test.ts
+++ b/test/integration/raw-data/index.test.ts
@@ -1,5 +1,5 @@
 import { existsSync } from 'fs'
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 import { join } from 'path'
 
 describe('integration - raw-data', () => {
diff --git a/test/integration/relative-entry/relative-entry.test.ts b/test/integration/relative-entry/relative-entry.test.ts
index 9e20123e..79980aea 100644
--- a/test/integration/relative-entry/relative-entry.test.ts
+++ b/test/integration/relative-entry/relative-entry.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration relative-entry', () => {
   it('should generate proper assets for each exports', async () => {
diff --git a/test/integration/server-components-same-layer/index.test.ts b/test/integration/server-components-same-layer/index.test.ts
index 792406d2..8574785a 100644
--- a/test/integration/server-components-same-layer/index.test.ts
+++ b/test/integration/server-components-same-layer/index.test.ts
@@ -1,6 +1,6 @@
 import { promises as fsp } from 'fs'
 import { join } from 'path'
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 
 describe('integration server-components-same-layer', () => {
   it('should generate proper assets for each exports', async () => {
diff --git a/test/integration/server-components/index.test.ts b/test/integration/server-components/index.test.ts
index 910de2e2..b8d4f578 100644
--- a/test/integration/server-components/index.test.ts
+++ b/test/integration/server-components/index.test.ts
@@ -1,4 +1,7 @@
-import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+import {
+  createIntegrationTest,
+  getFileNamesFromDirectory,
+} from '../../testing-utils'
 
 describe('integration server-components', () => {
   it('should generate proper assets for each exports', async () => {
diff --git a/test/integration/shared-any-module/index.test.ts b/test/integration/shared-any-module/index.test.ts
index 844b8d16..910636b1 100644
--- a/test/integration/shared-any-module/index.test.ts
+++ b/test/integration/shared-any-module/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertFilesContent,
   createIntegrationTest,
   getFileNamesFromDirectory,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration shared-module', () => {
   it('should split all shared module into different chunks', async () => {
diff --git a/test/integration/shared-entry/index.test.ts b/test/integration/shared-entry/index.test.ts
index 6c0f38ee..2a9e7bed 100644
--- a/test/integration/shared-entry/index.test.ts
+++ b/test/integration/shared-entry/index.test.ts
@@ -1,6 +1,6 @@
 import { promises as fsp } from 'fs'
 import { join } from 'path'
-import { assertContainFiles, createIntegrationTest } from '../utils'
+import { assertContainFiles, createIntegrationTest } from '../../testing-utils'
 
 describe('integration shared-entry', () => {
   it('should split shared module into one chunk layer', async () => {
diff --git a/test/integration/shared-module-ts-esm/index.test.ts b/test/integration/shared-module-ts-esm/index.test.ts
index ba281aa7..0938cab4 100644
--- a/test/integration/shared-module-ts-esm/index.test.ts
+++ b/test/integration/shared-module-ts-esm/index.test.ts
@@ -1,4 +1,7 @@
-import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+import {
+  createIntegrationTest,
+  getFileNamesFromDirectory,
+} from '../../testing-utils'
 
 describe('integration shared-module-ts-esm', () => {
   it('should contain correct type file path of shared chunks', async () => {
diff --git a/test/integration/shared-module-ts/index.test.ts b/test/integration/shared-module-ts/index.test.ts
index 6eb89194..153578aa 100644
--- a/test/integration/shared-module-ts/index.test.ts
+++ b/test/integration/shared-module-ts/index.test.ts
@@ -1,4 +1,7 @@
-import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+import {
+  createIntegrationTest,
+  getFileNamesFromDirectory,
+} from '../../testing-utils'
 
 describe('integration shared-module-ts', () => {
   it('should contain correct type file path of shared chunks', async () => {
diff --git a/test/integration/shared-module-with-suffix/shared-module-with-suffix.test.ts b/test/integration/shared-module-with-suffix/shared-module-with-suffix.test.ts
index 88e50b4a..941ee31d 100644
--- a/test/integration/shared-module-with-suffix/shared-module-with-suffix.test.ts
+++ b/test/integration/shared-module-with-suffix/shared-module-with-suffix.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration - shared-module-with-suffix', () => {
   it('should alias correctly for the shared module with special suffix', async () => {
diff --git a/test/integration/shared-module/index.test.ts b/test/integration/shared-module/index.test.ts
index 5be97948..578e1df4 100644
--- a/test/integration/shared-module/index.test.ts
+++ b/test/integration/shared-module/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertFilesContent,
   createIntegrationTest,
   getFileNamesFromDirectory,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration shared-module', () => {
   it('should split shared module into one chunk layer', async () => {
diff --git a/test/integration/stage3-decorator/index.test.ts b/test/integration/stage3-decorator/index.test.ts
index 42486f31..24917757 100644
--- a/test/integration/stage3-decorator/index.test.ts
+++ b/test/integration/stage3-decorator/index.test.ts
@@ -1,5 +1,5 @@
 import { assertContainFiles, stripANSIColor } from '../../testing-utils'
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 import * as console from 'node:console'
 
 describe('integration stage3-decorator', () => {
diff --git a/test/integration/subpath-imports/index.test.ts b/test/integration/subpath-imports/index.test.ts
index 55040f32..f9a156bc 100644
--- a/test/integration/subpath-imports/index.test.ts
+++ b/test/integration/subpath-imports/index.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration shared-module', () => {
   it('should split shared module into one chunk layer', async () => {
diff --git a/test/integration/ts-allow-js/index.test.ts b/test/integration/ts-allow-js/index.test.ts
index b4f6ec0b..835f0bd8 100644
--- a/test/integration/ts-allow-js/index.test.ts
+++ b/test/integration/ts-allow-js/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertContainFiles,
   assertFilesContent,
   createIntegrationTest,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration - ts-allow-js', () => {
   it('should generate proper assets', async () => {
diff --git a/test/integration/ts-dual-package-module/index.test.ts b/test/integration/ts-dual-package-module/index.test.ts
index 2125bfee..7ac73922 100644
--- a/test/integration/ts-dual-package-module/index.test.ts
+++ b/test/integration/ts-dual-package-module/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertContainFiles } from '../utils'
+import { createIntegrationTest, assertContainFiles } from '../../testing-utils'
 
 describe('integration ts-dual-package-module', () => {
   it('should ensure generated assets', async () => {
diff --git a/test/integration/ts-dual-package-type-cjs/index.test.ts b/test/integration/ts-dual-package-type-cjs/index.test.ts
index f7034ab6..ed014a00 100644
--- a/test/integration/ts-dual-package-type-cjs/index.test.ts
+++ b/test/integration/ts-dual-package-type-cjs/index.test.ts
@@ -1,4 +1,4 @@
-import { createIntegrationTest, assertContainFiles } from '../utils'
+import { createIntegrationTest, assertContainFiles } from '../../testing-utils'
 
 describe('integration ts-dual-package-type-cjs', () => {
   it('should ensure generated assets', async () => {
diff --git a/test/integration/ts-error/index.test.ts b/test/integration/ts-error/index.test.ts
index 6f56135a..f5be5fc1 100644
--- a/test/integration/ts-error/index.test.ts
+++ b/test/integration/ts-error/index.test.ts
@@ -1,6 +1,6 @@
 import { join } from 'path'
 import { existsSync } from 'fs'
-import { createIntegrationTest } from '../utils'
+import { createIntegrationTest } from '../../testing-utils'
 
 describe('integration ts-error', () => {
   it('should error when ts is not properly resolved', async () => {
diff --git a/test/integration/ts-exports-multiple-conditions/index.test.ts b/test/integration/ts-exports-multiple-conditions/index.test.ts
index a49fc491..860c7646 100644
--- a/test/integration/ts-exports-multiple-conditions/index.test.ts
+++ b/test/integration/ts-exports-multiple-conditions/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertContainFiles,
   createIntegrationTest,
   assertFilesContent,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration - ts-exports-multiple-conditions', () => {
   it('should generate proper assets', async () => {
diff --git a/test/integration/ts-exports-types/index.test.ts b/test/integration/ts-exports-types/index.test.ts
index 6fca3450..61216a28 100644
--- a/test/integration/ts-exports-types/index.test.ts
+++ b/test/integration/ts-exports-types/index.test.ts
@@ -1,4 +1,4 @@
-import { assertContainFiles, createIntegrationTest } from '../utils'
+import { assertContainFiles, createIntegrationTest } from '../../testing-utils'
 
 describe('integration - ts-exports-types', () => {
   it('should generate proper assets', async () => {
diff --git a/test/integration/ts-import-json-exports-condition/index.test.ts b/test/integration/ts-import-json-exports-condition/index.test.ts
index 8ec2ce95..6f2a3331 100644
--- a/test/integration/ts-import-json-exports-condition/index.test.ts
+++ b/test/integration/ts-import-json-exports-condition/index.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration - ts-import-json-exports-condition', () => {
   it('should output correct bundles and types import json with export condition', async () => {
diff --git a/test/integration/ts-import-json-exports-string/index.test.ts b/test/integration/ts-import-json-exports-string/index.test.ts
index 8ec2ce95..6f2a3331 100644
--- a/test/integration/ts-import-json-exports-string/index.test.ts
+++ b/test/integration/ts-import-json-exports-string/index.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration - ts-import-json-exports-condition', () => {
   it('should output correct bundles and types import json with export condition', async () => {
diff --git a/test/integration/ts-incremental-with-buildinfofile/index.test.ts b/test/integration/ts-incremental-with-buildinfofile/index.test.ts
index d095bfcd..4189e5c3 100644
--- a/test/integration/ts-incremental-with-buildinfofile/index.test.ts
+++ b/test/integration/ts-incremental-with-buildinfofile/index.test.ts
@@ -4,7 +4,7 @@ import {
   assertContainFiles,
   assertFilesContent,
   createIntegrationTest,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration - ts-incremental-with-buildinfofile', () => {
   it('should generate proper assets', async () => {
diff --git a/test/integration/ts-incremental/index.test.ts b/test/integration/ts-incremental/index.test.ts
index 8b580b7c..a4b7ab53 100644
--- a/test/integration/ts-incremental/index.test.ts
+++ b/test/integration/ts-incremental/index.test.ts
@@ -3,7 +3,7 @@ import {
   assertContainFiles,
   assertFilesContent,
   createIntegrationTest,
-} from '../utils'
+} from '../../testing-utils'
 import { join } from 'path'
 
 describe('integration - ts-incremental', () => {
diff --git a/test/integration/ts-no-emit/index.test.ts b/test/integration/ts-no-emit/index.test.ts
index 5aec333a..afd4ce35 100644
--- a/test/integration/ts-no-emit/index.test.ts
+++ b/test/integration/ts-no-emit/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertContainFiles,
   assertFilesContent,
   createIntegrationTest,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration ts-no-emit', () => {
   it('should succeed the build', async () => {
diff --git a/test/integration/tsconfig-override/index.test.ts b/test/integration/tsconfig-override/index.test.ts
index 2ebc94a5..5da534e2 100644
--- a/test/integration/tsconfig-override/index.test.ts
+++ b/test/integration/tsconfig-override/index.test.ts
@@ -1,4 +1,4 @@
-import { assertFilesContent, createIntegrationTest } from '../utils'
+import { assertFilesContent, createIntegrationTest } from '../../testing-utils'
 
 describe('integration tsconfig-override', () => {
   it('should use es5 output in build without override', async () => {
diff --git a/test/integration/unspecified-types-paths/index.test.ts b/test/integration/unspecified-types-paths/index.test.ts
index 19e0f306..1a7c9bf9 100644
--- a/test/integration/unspecified-types-paths/index.test.ts
+++ b/test/integration/unspecified-types-paths/index.test.ts
@@ -2,7 +2,7 @@ import {
   assertFilesContent,
   createIntegrationTest,
   getFileNamesFromDirectory,
-} from '../utils'
+} from '../../testing-utils'
 
 describe('integration - tsconfig-override', () => {
   it('should not generate js types paths if not specified', async () => {
diff --git a/test/cli/utils.ts b/test/testing-utils/cli.ts
similarity index 83%
rename from test/cli/utils.ts
rename to test/testing-utils/cli.ts
index 4a0cac6e..89d59237 100644
--- a/test/cli/utils.ts
+++ b/test/testing-utils/cli.ts
@@ -1,8 +1,4 @@
-import {
-  createTest,
-  executeBunchee,
-  type ExcuteBuncheeResult,
-} from '../testing-utils'
+import { createTest, executeBunchee, type ExcuteBuncheeResult } from './shared'
 
 export async function createCliTest(
   {
diff --git a/test/utils/debug.ts b/test/testing-utils/debug.ts
similarity index 100%
rename from test/utils/debug.ts
rename to test/testing-utils/debug.ts
diff --git a/test/testing-utils.ts b/test/testing-utils/helpers.ts
similarity index 51%
rename from test/testing-utils.ts
rename to test/testing-utils/helpers.ts
index c4f1a37a..8c779766 100644
--- a/test/testing-utils.ts
+++ b/test/testing-utils/helpers.ts
@@ -1,8 +1,13 @@
 import fs from 'fs'
 import fsp from 'fs/promises'
 import path from 'path'
-import * as debug from './utils/debug'
-import { fork } from 'child_process'
+import * as debug from './debug'
+
+export type CreateTestResultExtra = {
+  dir: string
+  distDir: string
+  distFile: string
+}
 
 export function stripANSIColor(str: string) {
   return str.replace(
@@ -24,7 +29,7 @@ export async function existsFile(filePath: string) {
 }
 
 export function assertContainFiles(dir: string, filePaths: string[]) {
-  const results = []
+  const results: string[] = []
   for (const filePath of filePaths) {
     const fullPath = path.resolve(dir, filePath)
     const existed = fs.existsSync(fullPath)
@@ -94,104 +99,3 @@ export async function deleteFile(f: string) {
     await fsp.unlink(f)
   }
 }
-
-type CreateTestResultExtra = {
-  dir: string
-  distDir: string
-  distFile: string
-}
-export async function createTest<T>(
-  {
-    args,
-    options,
-    directory,
-    abortTimeout,
-    run,
-  }: {
-    args: string[]
-    options: { env?: NodeJS.ProcessEnv }
-    directory: string
-    abortTimeout?: number
-    run: (
-      args: string[],
-      options: { env?: NodeJS.ProcessEnv },
-      processOptions?: { abortTimeout?: number },
-    ) => Promise<T>
-  },
-  testFn?: (context: T & CreateTestResultExtra) => void,
-) {
-  const fixturesDir = directory
-  const distDir = path.join(fixturesDir, './dist')
-  let distFile = ''
-
-  if (!args.includes('--cwd')) {
-    args.push('--cwd', fixturesDir)
-  }
-  const outputIndex = args.indexOf('-o')
-  if (outputIndex !== -1) {
-    distFile = path.join(fixturesDir, args[outputIndex + 1])
-  }
-
-  const result = await run(args, options, { abortTimeout })
-  const build = {
-    ...result,
-    dir: directory,
-    distDir,
-    distFile,
-  }
-  if (testFn) {
-    try {
-      await testFn(build)
-    } finally {
-      if (!process.env.TEST_NOT_CLEANUP) {
-        await removeDirectory(distDir)
-      }
-    }
-  }
-  return build
-}
-
-export type ExcuteBuncheeResult = {
-  code: number | null
-  signal: NodeJS.Signals | null
-  stdout: string
-  stderr: string
-}
-
-export async function executeBunchee(
-  args: string[],
-  options: { env?: NodeJS.ProcessEnv },
-  processOptions?: { abortTimeout?: number },
-): Promise<ExcuteBuncheeResult> {
-  debug.log(`Command: bunchee ${args.join(' ')}`)
-
-  const assetPath = process.env.POST_BUILD
-    ? '../dist/bin/cli.js'
-    : '../src/bin/index.ts'
-
-  const ps = fork(path.resolve(__dirname, assetPath), args, {
-    execArgv: ['-r', '@swc-node/register'],
-    stdio: 'pipe',
-    env: { SWC_NODE_IGNORE_DYNAMIC: 'true', ...options.env, ...process.env },
-  })
-  let stderr = ''
-  let stdout = ''
-  ps.stdout?.on('data', (chunk) => (stdout += chunk.toString()))
-  ps.stderr?.on('data', (chunk) => (stderr += chunk.toString()))
-
-  if (typeof processOptions?.abortTimeout === 'number') {
-    setTimeout(() => {
-      ps.kill('SIGTERM')
-    }, processOptions.abortTimeout)
-  }
-
-  const [code, signal] = await new Promise<
-    [number | null, NodeJS.Signals | null]
-  >((resolve) => {
-    ps.on('close', (code, signal) => resolve([code, signal]))
-  })
-  if (stdout) process.stdout.write(stdout)
-  if (stderr) process.stderr.write(stderr)
-
-  return { code, stdout, stderr, signal }
-}
diff --git a/test/integration/utils.ts b/test/testing-utils/index.ts
similarity index 92%
rename from test/integration/utils.ts
rename to test/testing-utils/index.ts
index 86523c14..8dd1f3b2 100644
--- a/test/integration/utils.ts
+++ b/test/testing-utils/index.ts
@@ -1,14 +1,10 @@
 import { glob } from 'glob'
-import {
-  createTest,
-  executeBunchee,
-  type ExcuteBuncheeResult,
-} from '../testing-utils'
+import { createTest, executeBunchee, type ExcuteBuncheeResult } from './shared'
 
 function normalizePath(filePath: string) {
   return filePath.replace(/\\/g, '/')
 }
-export * from '../testing-utils'
+export * from './helpers'
 
 type IntegrationTestOptions = {
   args?: string[]
@@ -17,6 +13,8 @@ type IntegrationTestOptions = {
   directory: string
 }
 
+export { createCliTest } from './cli'
+
 export async function createIntegrationTest(
   { args, options, abortTimeout, directory }: IntegrationTestOptions,
   testFn?: Parameters<typeof createTest<ExcuteBuncheeResult>>[1],
diff --git a/test/testing-utils/shared.ts b/test/testing-utils/shared.ts
new file mode 100644
index 00000000..00d40352
--- /dev/null
+++ b/test/testing-utils/shared.ts
@@ -0,0 +1,100 @@
+import { fork } from 'child_process'
+import { CreateTestResultExtra, removeDirectory } from './helpers'
+import path from 'path'
+import * as debug from './debug'
+
+export async function createTest<T>(
+  {
+    args,
+    options,
+    directory,
+    abortTimeout,
+    run,
+  }: {
+    args: string[]
+    options: { env?: NodeJS.ProcessEnv }
+    directory: string
+    abortTimeout?: number
+    run: (
+      args: string[],
+      options: { env?: NodeJS.ProcessEnv },
+      processOptions?: { abortTimeout?: number },
+    ) => Promise<T>
+  },
+  testFn?: (context: T & CreateTestResultExtra) => void,
+) {
+  const fixturesDir = directory
+  const distDir = path.join(fixturesDir, './dist')
+  let distFile = ''
+
+  if (!args.includes('--cwd')) {
+    args.push('--cwd', fixturesDir)
+  }
+  const outputIndex = args.indexOf('-o')
+  if (outputIndex !== -1) {
+    distFile = path.join(fixturesDir, args[outputIndex + 1])
+  }
+
+  const result = await run(args, options, { abortTimeout })
+  const build = {
+    ...result,
+    dir: directory,
+    distDir,
+    distFile,
+  }
+  if (testFn) {
+    try {
+      await testFn(build)
+    } finally {
+      if (!process.env.TEST_NOT_CLEANUP) {
+        await removeDirectory(distDir)
+      }
+    }
+  }
+  return build
+}
+
+export type ExcuteBuncheeResult = {
+  code: number | null
+  signal: NodeJS.Signals | null
+  stdout: string
+  stderr: string
+}
+
+export async function executeBunchee(
+  args: string[],
+  options: { env?: NodeJS.ProcessEnv },
+  processOptions?: { abortTimeout?: number },
+): Promise<ExcuteBuncheeResult> {
+  debug.log(`Command: bunchee ${args.join(' ')}`)
+
+  const assetPath = process.env.POST_BUILD
+    ? '../../dist/bin/cli.js'
+    : '../../src/bin/index.ts'
+
+  const ps = fork(path.resolve(__dirname, assetPath), args, {
+    execArgv: ['-r', '@swc-node/register'],
+    stdio: 'pipe',
+    env: { SWC_NODE_IGNORE_DYNAMIC: 'true', ...options.env, ...process.env },
+  })
+  let stderr = ''
+  let stdout = ''
+  ps.stdout?.on('data', (chunk) => (stdout += chunk.toString()))
+  ps.stderr?.on('data', (chunk) => (stderr += chunk.toString()))
+
+  if (typeof processOptions?.abortTimeout === 'number') {
+    setTimeout(() => {
+      ps.kill('SIGTERM')
+    }, processOptions.abortTimeout)
+  }
+
+  const [code, signal] = await new Promise<
+    [number | null, NodeJS.Signals | null]
+  >((resolve) => {
+    ps.on('close', (code, signal) => resolve([code, signal]))
+  })
+  if (stdout) process.stdout.write(stdout)
+  if (stderr) process.stderr.write(stderr)
+
+  return { code, stdout, stderr, signal }
+}
diff --git a/test/tsconfig.json b/test/tsconfig.json
index e597b432..a9d5f2f7 100644
--- a/test/tsconfig.json
+++ b/test/tsconfig.json
@@ -7,18 +7,16 @@
     "jsx": "preserve",
     "baseUrl": "..",
     "paths": {
-      "bunchee": ["./src/index.ts"]
+      "bunchee": ["./src/index.ts"],
+      "testing-utils": ["./test/testing-utils/index.ts"],
     }
   },
   "include": [
-    "./test/**/*.test.ts",
-    "./test**/*.test.tsx",
-    // TODO: group those internal utils
-    "./test/utils/*",
-    "./test/testing-utils.ts",
-    "./test/integration/utils.ts",
-    "./src/**/*.test.ts",
-    "./src/**/*.test.tsx"
+    "./**/*.test.ts",
+    "./**/*.test.tsx",
+    "./testing-utils",
+    "../src/**/*.test.ts",
+    "../src/**/*.test.tsx"
   ],
   "references": [{ "path": "../tsconfig.json" }]
 }
diff --git a/tsconfig.json b/tsconfig.json
index abf258ae..74f0f882 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -17,6 +17,6 @@
     "forceConsistentCasingInFileNames": true
   },
   "references": [{ "path": "./test/tsconfig.json" }],
-  "include": ["src", "*.d.ts", "**/*.json"],
+  "include": ["src", "**/*.json"],
   "exclude": ["src/**/*.test.ts", "src/**/*.test.tsx"]
 }