diff --git a/test/golden-utils.js b/test/golden-utils.js
index 7d5f28f5eeb8b..ebb152f0e9d94 100644
--- a/test/golden-utils.js
+++ b/test/golden-utils.js
@@ -17,13 +17,19 @@
 const path = require('path');
 const fs = require('fs');
 const Diff = require('text-diff');
-const mime = require('mime');
 const PNG = require('pngjs').PNG;
 const jpeg = require('jpeg-js');
 const pixelmatch = require('pixelmatch');
 
 module.exports = {compare};
 
+const extensionToMimeType = {
+  'png': 'image/png',
+  'txt': 'text/plain',
+  'jpg': 'image/jpeg',
+  'jpeg': 'image/jpeg',
+};
+
 const GoldenComparators = {
   'image/png': compareImages,
   'image/jpeg': compareImages,
@@ -98,7 +104,8 @@ function compare(goldenPath, outputPath, actual, goldenName) {
     };
   }
   const expected = fs.readFileSync(expectedPath);
-  const mimeType = mime.getType(goldenName);
+  const extension = goldenName.substring(goldenName.lastIndexOf('.') + 1);
+  const mimeType = extensionToMimeType[extension];
   const comparator = GoldenComparators[mimeType];
   if (!comparator) {
     return {
diff --git a/test/input.spec.js b/test/input.spec.js
index 8a1d58bfe064c..1e3e6254fd9cd 100644
--- a/test/input.spec.js
+++ b/test/input.spec.js
@@ -129,12 +129,12 @@ module.exports.describe = function({testRunner, expect, playwright, FFOX, CHROMI
             ).toBe(
               fs.readFileSync(path.join(__dirname, '/assets/file-to-upload.txt')).toString()
             );
-          expect(file2.name).toBe('file-to-upload.png');
+          expect(file2.name).toBe('pptr.png');
           expect(file2.type).toBe('image/png');
           expect(
             fs.readFileSync(file2.path).toString()
           ).toBe(
-            fs.readFileSync(path.join(__dirname, '/assets/file-to-upload.png')).toString()
+            fs.readFileSync(path.join(__dirname, '/assets/pptr.png')).toString()
           );
         callback();
         });
@@ -147,7 +147,7 @@ module.exports.describe = function({testRunner, expect, playwright, FFOX, CHROMI
           <input type="submit" value="Submit">
         </form>`)
       await (await page.$('input[name=file1]')).setInputFiles(path.join(__dirname, '/assets/file-to-upload.txt'));
-      await (await page.$('input[name=file2]')).setInputFiles(path.join(__dirname, '/assets/file-to-upload.png'));
+      await (await page.$('input[name=file2]')).setInputFiles(path.join(__dirname, '/assets/pptr.png'));
       page.click('input[type=submit]');
       await result;
     });
diff --git a/utils/testserver/index.js b/utils/testserver/index.js
index 201d6c7793cd1..c450753e08470 100644
--- a/utils/testserver/index.js
+++ b/utils/testserver/index.js
@@ -19,7 +19,6 @@ const https = require('https');
 const url = require('url');
 const fs = require('fs');
 const path = require('path');
-const mime = require('mime');
 const WebSocketServer = require('ws').Server;
 
 const fulfillSymbol = Symbol('fullfil callback');
@@ -248,7 +247,8 @@ class TestServer {
         response.end(`File not found: ${filePath}`);
         return;
       }
-      const mimeType = mime.getType(filePath);
+      const extension = filePath.substring(filePath.lastIndexOf('.') + 1);
+      const mimeType = extensionToMime[extension] || 'application/octet-stream';
       const isTextEncoding = /^text\/|^application\/(javascript|json)/.test(mimeType);
       const contentType = isTextEncoding ? `${mimeType}; charset=utf-8` : mimeType;
       response.setHeader('Content-Type', contentType);
@@ -269,4 +269,204 @@ class TestServer {
   }
 }
 
+const extensionToMime = {
+  'ai': 'application/postscript',
+  'apng': 'image/apng',
+  'appcache': 'text/cache-manifest',
+  'au': 'audio/basic',
+  'bmp': 'image/bmp',
+  'cer': 'application/pkix-cert',
+  'cgm': 'image/cgm',
+  'coffee': 'text/coffeescript',
+  'conf': 'text/plain',
+  'crl': 'application/pkix-crl',
+  'css': 'text/css',
+  'csv': 'text/csv',
+  'def': 'text/plain',
+  'doc': 'application/msword',
+  'dot': 'application/msword',
+  'drle': 'image/dicom-rle',
+  'dtd': 'application/xml-dtd',
+  'ear': 'application/java-archive',
+  'emf': 'image/emf',
+  'eps': 'application/postscript',
+  'exr': 'image/aces',
+  'fits': 'image/fits',
+  'g3': 'image/g3fax',
+  'gbr': 'application/rpki-ghostbusters',
+  'gif': 'image/gif',
+  'glb': 'model/gltf-binary',
+  'gltf': 'model/gltf+json',
+  'gz': 'application/gzip',
+  'h261': 'video/h261',
+  'h263': 'video/h263',
+  'h264': 'video/h264',
+  'heic': 'image/heic',
+  'heics': 'image/heic-sequence',
+  'heif': 'image/heif',
+  'heifs': 'image/heif-sequence',
+  'htm': 'text/html',
+  'html': 'text/html',
+  'ics': 'text/calendar',
+  'ief': 'image/ief',
+  'ifb': 'text/calendar',
+  'iges': 'model/iges',
+  'igs': 'model/iges',
+  'in': 'text/plain',
+  'ini': 'text/plain',
+  'jade': 'text/jade',
+  'jar': 'application/java-archive',
+  'jls': 'image/jls',
+  'jp2': 'image/jp2',
+  'jpe': 'image/jpeg',
+  'jpeg': 'image/jpeg',
+  'jpf': 'image/jpx',
+  'jpg': 'image/jpeg',
+  'jpg2': 'image/jp2',
+  'jpgm': 'video/jpm',
+  'jpgv': 'video/jpeg',
+  'jpm': 'image/jpm',
+  'jpx': 'image/jpx',
+  'js': 'application/javascript',
+  'json': 'application/json',
+  'json5': 'application/json5',
+  'jsx': 'text/jsx',
+  'jxr': 'image/jxr',
+  'kar': 'audio/midi',
+  'ktx': 'image/ktx',
+  'less': 'text/less',
+  'list': 'text/plain',
+  'litcoffee': 'text/coffeescript',
+  'log': 'text/plain',
+  'm1v': 'video/mpeg',
+  'm21': 'application/mp21',
+  'm2a': 'audio/mpeg',
+  'm2v': 'video/mpeg',
+  'm3a': 'audio/mpeg',
+  'm4a': 'audio/mp4',
+  'm4p': 'application/mp4',
+  'man': 'text/troff',
+  'manifest': 'text/cache-manifest',
+  'markdown': 'text/markdown',
+  'mathml': 'application/mathml+xml',
+  'md': 'text/markdown',
+  'mdx': 'text/mdx',
+  'me': 'text/troff',
+  'mesh': 'model/mesh',
+  'mft': 'application/rpki-manifest',
+  'mid': 'audio/midi',
+  'midi': 'audio/midi',
+  'mj2': 'video/mj2',
+  'mjp2': 'video/mj2',
+  'mjs': 'application/javascript',
+  'mml': 'text/mathml',
+  'mov': 'video/quicktime',
+  'mp2': 'audio/mpeg',
+  'mp21': 'application/mp21',
+  'mp2a': 'audio/mpeg',
+  'mp3': 'audio/mpeg',
+  'mp4': 'video/mp4',
+  'mp4a': 'audio/mp4',
+  'mp4s': 'application/mp4',
+  'mp4v': 'video/mp4',
+  'mpe': 'video/mpeg',
+  'mpeg': 'video/mpeg',
+  'mpg': 'video/mpeg',
+  'mpg4': 'video/mp4',
+  'mpga': 'audio/mpeg',
+  'mrc': 'application/marc',
+  'ms': 'text/troff',
+  'msh': 'model/mesh',
+  'n3': 'text/n3',
+  'oga': 'audio/ogg',
+  'ogg': 'audio/ogg',
+  'ogv': 'video/ogg',
+  'ogx': 'application/ogg',
+  'otf': 'font/otf',
+  'p10': 'application/pkcs10',
+  'p7c': 'application/pkcs7-mime',
+  'p7m': 'application/pkcs7-mime',
+  'p7s': 'application/pkcs7-signature',
+  'p8': 'application/pkcs8',
+  'pdf': 'application/pdf',
+  'pki': 'application/pkixcmp',
+  'pkipath': 'application/pkix-pkipath',
+  'png': 'image/png',
+  'ps': 'application/postscript',
+  'pskcxml': 'application/pskc+xml',
+  'qt': 'video/quicktime',
+  'rmi': 'audio/midi',
+  'rng': 'application/xml',
+  'roa': 'application/rpki-roa',
+  'roff': 'text/troff',
+  'rsd': 'application/rsd+xml',
+  'rss': 'application/rss+xml',
+  'rtf': 'application/rtf',
+  'rtx': 'text/richtext',
+  's3m': 'audio/s3m',
+  'sgi': 'image/sgi',
+  'sgm': 'text/sgml',
+  'sgml': 'text/sgml',
+  'shex': 'text/shex',
+  'shtml': 'text/html',
+  'sil': 'audio/silk',
+  'silo': 'model/mesh',
+  'slim': 'text/slim',
+  'slm': 'text/slim',
+  'snd': 'audio/basic',
+  'spx': 'audio/ogg',
+  'stl': 'model/stl',
+  'styl': 'text/stylus',
+  'stylus': 'text/stylus',
+  'svg': 'image/svg+xml',
+  'svgz': 'image/svg+xml',
+  't': 'text/troff',
+  't38': 'image/t38',
+  'text': 'text/plain',
+  'tfx': 'image/tiff-fx',
+  'tif': 'image/tiff',
+  'tiff': 'image/tiff',
+  'tr': 'text/troff',
+  'ts': 'video/mp2t',
+  'tsv': 'text/tab-separated-values',
+  'ttc': 'font/collection',
+  'ttf': 'font/ttf',
+  'ttl': 'text/turtle',
+  'txt': 'text/plain',
+  'uri': 'text/uri-list',
+  'uris': 'text/uri-list',
+  'urls': 'text/uri-list',
+  'vcard': 'text/vcard',
+  'vrml': 'model/vrml',
+  'vtt': 'text/vtt',
+  'war': 'application/java-archive',
+  'wasm': 'application/wasm',
+  'wav': 'audio/wav',
+  'weba': 'audio/webm',
+  'webm': 'video/webm',
+  'webmanifest': 'application/manifest+json',
+  'webp': 'image/webp',
+  'wmf': 'image/wmf',
+  'woff': 'font/woff',
+  'woff2': 'font/woff2',
+  'wrl': 'model/vrml',
+  'x3d': 'model/x3d+xml',
+  'x3db': 'model/x3d+fastinfoset',
+  'x3dbz': 'model/x3d+binary',
+  'x3dv': 'model/x3d-vrml',
+  'x3dvz': 'model/x3d+vrml',
+  'x3dz': 'model/x3d+xml',
+  'xaml': 'application/xaml+xml',
+  'xht': 'application/xhtml+xml',
+  'xhtml': 'application/xhtml+xml',
+  'xm': 'audio/xm',
+  'xml': 'text/xml',
+  'xsd': 'application/xml',
+  'xsl': 'application/xml',
+  'xslt': 'application/xslt+xml',
+  'yaml': 'text/yaml',
+  'yml': 'text/yaml',
+  'zip': 'application/zip'
+};
+
 module.exports = {TestServer};