feat: add unit tests

Author: hejsztynx

src/web/EnrichedTextInput.tsx

@@ -87,16 +87,7 @@ import {
   sanitizeMentionAttributes,
 } from './sanitization/htmlSanitizer';
 import { assertBrowserEnvironment } from './utils/assertBrowserEnvironment';
-
-function runSafelyInEditor<T>(
-  editor: Editor | null,
-  callback: (editor: Editor) => T
-): T | null {
-  if (editor && !editor.isDestroyed) {
-    return callback(editor);
-  }
-  return null;
-}
+import { runSafelyInEditor } from './utils/runSafelyInEditor';
 
 function runFocused(
   editor: Editor,

src/web/__tests__/runSafelyInEditor.test.ts

@@ -0,0 +1,37 @@
+import type { Editor } from '@tiptap/react';
+import { runSafelyInEditor } from '../utils/runSafelyInEditor';
+
+function makeEditor(isDestroyed: boolean): Editor {
+  return { isDestroyed } as Editor;
+}
+
+describe('runSafelyInEditor', () => {
+  test('runs the callback and returns its result when editor is alive', () => {
+    const editor = makeEditor(false);
+    const callback = jest.fn((e: Editor) => e);
+
+    const result = runSafelyInEditor(editor, callback);
+
+    expect(callback).toHaveBeenCalledWith(editor);
+    expect(result).toBe(editor);
+  });
+
+  test('does not run the callback and returns null when editor is destroyed', () => {
+    const editor = makeEditor(true);
+    const callback = jest.fn();
+
+    const result = runSafelyInEditor(editor, callback);
+
+    expect(callback).not.toHaveBeenCalled();
+    expect(result).toBeNull();
+  });
+
+  test('does not run the callback and returns null when editor is null', () => {
+    const callback = jest.fn();
+
+    const result = runSafelyInEditor(null, callback);
+
+    expect(callback).not.toHaveBeenCalled();
+    expect(result).toBeNull();
+  });
+});

src/web/utils/runSafelyInEditor.ts

@@ -0,0 +1,11 @@
+import type { Editor } from '@tiptap/react';
+
+export function runSafelyInEditor<T>(
+  editor: Editor | null,
+  callback: (editor: Editor) => T
+): T | null {
+  if (editor && !editor.isDestroyed) {
+    return callback(editor);
+  }
+  return null;
+}