From 78f1f227fc469596d65a671d8314d4401b62d248 Mon Sep 17 00:00:00 2001
From: Le Vivilet <levivilet@pm.me>
Date: Wed, 22 Apr 2026 22:48:50 +0200
Subject: [PATCH] test: add unit test for getCss function to verify error
 styles

---
 packages/diff-view/test/GetCss.test.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 packages/diff-view/test/GetCss.test.ts

diff --git a/packages/diff-view/test/GetCss.test.ts b/packages/diff-view/test/GetCss.test.ts
new file mode 100644
index 0000000..5f68ef6
--- /dev/null
+++ b/packages/diff-view/test/GetCss.test.ts
@@ -0,0 +1,11 @@
+import { expect, test } from '@jest/globals'
+import { getCss } from '../src/parts/GetCss/GetCss.ts'
+
+test('getCss includes the shared error styles', (): void => {
+  const css = getCss()
+
+  expect(css).toContain('.DiffEditorErrorCodeFrame')
+  expect(css).toContain('.DiffEditorErrorStack')
+  expect(css).toContain('.DiffEditorErrorStackLink')
+  expect(css).toContain('text-underline-offset: 2px;')
+})