diff --git a/tests/detect-antipatterns-fixtures.test.mjs b/tests/detect-antipatterns-fixtures.test.mjs
index fb9ee76f9..f7fa1a4d7 100644
--- a/tests/detect-antipatterns-fixtures.test.mjs
+++ b/tests/detect-antipatterns-fixtures.test.mjs
@@ -1278,6 +1278,14 @@ describe('detectHtml — generated-UI tells', () => {
}
});
+ it('codex-grid-background: 1D dashed rules and px-pair line-fields stay legal', async () => {
+ const f = await detectHtml(path.join(FIXTURES, 'codex-grid-1d-pass.html'));
+ assert.equal(
+ f.filter(r => r.antipattern === 'codex-grid-background').length, 0,
+ `1D tiled hairlines must not flag, got: ${f.filter(r => r.antipattern === 'codex-grid-background').map(r => r.snippet).join('; ')}`,
+ );
+ });
+
it('gemini-tells: both flag cases surface by default and pass cases stay legal', async () => {
const findings = await detectHtml(path.join(FIXTURES, 'gemini-tells.html'));
// Two flag cases: a CSS img:hover{transform} rule and a Tailwind hover:scale on ![]()
.
diff --git a/tests/fixtures/antipatterns/codex-grid-1d-pass.html b/tests/fixtures/antipatterns/codex-grid-1d-pass.html
new file mode 100644
index 000000000..f87942f2b
--- /dev/null
+++ b/tests/fixtures/antipatterns/codex-grid-1d-pass.html
@@ -0,0 +1,21 @@
+
+
+
+
+ codex-grid-background 1D pass cases
+
+
+
+ Dotted horizontal rule
+
+ Progress rail
+
+ Single-axis px-pair line field
+
+
+