feature: add stat enoent error test (#255)

* feature: add stat enoent error test

* test

packages/test-integration/test/PreviewProcessRangeRequestStatError.test.ts

@@ -0,0 +1,48 @@
+import { expect, test } from '@jest/globals'
+import getPort from 'get-port'
+import { fileURLToPath } from 'url'
+import { connectToCdp } from '../src/parts/ConnectToCdp/ConnectToCdp.ts'
+import { createPreviewProcess } from '../src/parts/CreatePreviewProcess/CreatePreviewProcess.js'
+import { get } from '../src/parts/Get/Get.js'
+import { getRoot } from '../src/parts/GetRoot/GetRoot.js'
+import { mockModule } from '../src/parts/MockModule/MockModule.js'
+
+test('preview process - handles range request with stat ENOENT error', async () => {
+  const debugPort = await getPort()
+  const mockCdpImport = new URL('../src/mockCdpImport.js', import.meta.url).toString()
+  const root = getRoot()
+  const rootPath = fileURLToPath(root)
+  const slash = process.platform === 'win32' ? '\\' : '/'
+  const filePath = `${rootPath}${slash}any-file.txt`
+  const previewProcess = createPreviewProcess({
+    execArgv: [`--inspect=localhost:${debugPort}`, '--experimental-strip-types', `--import=${mockCdpImport}`],
+  })
+
+  const client = await connectToCdp(debugPort)
+
+  await mockModule(client.Runtime, {
+    moduleName: 'node:fs/promises',
+    functionName: 'stat',
+    filePath,
+    errorMessage: 'File not found',
+    errorCode: 'ENOENT',
+  })
+
+  const id = 1
+  const port = await getPort()
+
+  await previewProcess.invoke('WebViewServer.create', id)
+  await previewProcess.invoke('WebViewServer.setHandler', id, '', root, '', '')
+  await previewProcess.invoke('WebViewServer.start', id, port)
+
+  const response = await get(`http://localhost:${port}/any-file.txt`, {
+    headers: {
+      Range: 'bytes=0-100',
+    },
+  })
+  expect(response.status).toBe(404)
+  expect(await response.text()).toBe('not found')
+
+  await client[Symbol.dispose]()
+  previewProcess[Symbol.dispose]()
+})