test: merge export-404-html & export-override-404

test/integration/export-404-html/test/index.test.js → test/integration/export-404/test/index.test.js

@@ -1,15 +1,13 @@
 /* eslint-env jest */
 
+import { promises } from 'fs'
 import { join } from 'path'
 import { nextBuild, nextExport, File } from 'next-test-utils'
 
-import { promises } from 'fs'
-
-const { access, stat } = promises
+const { readFile, access, stat } = promises
 const appDir = join(__dirname, '../')
 const outdir = join(appDir, 'out')
-const context = {}
-context.appDir = appDir
+
 const nextConfig = new File(join(appDir, 'next.config.js'))
 
 const fileExist = (path) =>
@@ -41,3 +39,13 @@ describe('Static 404 Export', () => {
     expect(await fileExist(join(outdir, '404.html'))).toBe(true)
   })
 })
+
+describe('Export with a page named 404.js', () => {
+  it('should export a custom 404.html instead of default 404.html', async () => {
+    await nextBuild(appDir)
+    await nextExport(appDir, { outdir })
+
+    const html = await readFile(join(outdir, '404.html'), 'utf8')
+    expect(html).toMatch(/this is a 404 page override the default 404\.html/)
+  })
+})