diff --git a/test/utils/delta_x_test.dart b/test/utils/delta_x_test.dart
deleted file mode 100644
index a32870e4..00000000
--- a/test/utils/delta_x_test.dart
+++ /dev/null
@@ -1,65 +0,0 @@
-// ignore_for_file: deprecated_member_use_from_same_package
-
-import 'package:flutter_quill/quill_delta.dart';
-import 'package:flutter_quill/src/models/documents/delta_x.dart';
-import 'package:test/test.dart';
-
-void main() {
-  const htmlWithEmp =
-      '<p>This is a normal sentence, and this section has greater emp<em>hasis.</em></p>';
-
-  const htmlWithUnderline =
-      '<p>This is a normal sentence, and this section has greater <u>underline</u>';
-
-  const htmlWithVideoTag =
-      '<video src="https://www.youtube.com/embed/dQw4w9WgXcQ">Your browser does not support the video tag.</video>';
-
-  const htmlWithNormalLinkAndVideo =
-      '<a href="https://www.macrumors.com/" type="text/html">fdsfsd</a><br><video src="https://www.youtube.com/embed/dQw4w9WgXcQ">Your browser does not support the video tag.</video>';
-
-  final expectedDeltaEmp = Delta.fromOperations([
-    Operation.insert(
-        'This is a normal sentence, and this section has greater emp'),
-    Operation.insert('hasis.', {'italic': true}),
-    Operation.insert('\n'),
-  ]);
-
-  final expectedDeltaUnderline = Delta.fromOperations([
-    Operation.insert(
-        'This is a normal sentence, and this section has greater '),
-    Operation.insert('underline', {'underline': true}),
-    Operation.insert('\n'),
-  ]);
-
-  final expectedDeltaVideo = Delta.fromOperations([
-    Operation.insert({'video': 'https://www.youtube.com/embed/dQw4w9WgXcQ'}),
-    Operation.insert('\n'),
-  ]);
-
-  final expectedDeltaLinkAndVideoLink = Delta.fromOperations([
-    Operation.insert('fdsfsd', {'link': 'https://www.macrumors.com/'}),
-    Operation.insert('\n'),
-    Operation.insert({'video': 'https://www.youtube.com/embed/dQw4w9WgXcQ'}),
-    Operation.insert('\n'),
-  ]);
-
-  test('should detect emphasis and parse correctly', () {
-    final delta = DeltaX.fromHtml(htmlWithEmp);
-    expect(delta, expectedDeltaEmp);
-  });
-
-  test('should detect underline and parse correctly', () {
-    final delta = DeltaX.fromHtml(htmlWithUnderline);
-    expect(delta, expectedDeltaUnderline);
-  });
-
-  test('should detect video and parse correctly', () {
-    final delta = DeltaX.fromHtml(htmlWithVideoTag);
-    expect(delta, expectedDeltaVideo);
-  });
-
-  test('should detect by different way normal link and video link', () {
-    final delta = DeltaX.fromHtml(htmlWithNormalLinkAndVideo);
-    expect(delta, expectedDeltaLinkAndVideoLink);
-  });
-}