From 9842dbca0321cea73e0296320fd72111146b7dcb Mon Sep 17 00:00:00 2001
From: Sergey Vinogradov <mr.vursen@gmail.com>
Date: Fri, 17 Jul 2026 16:16:27 +0400
Subject: [PATCH] test: cover header row visibility with null header and header
 renderer

---
 packages/grid/test/column.test.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/packages/grid/test/column.test.js b/packages/grid/test/column.test.js
index f74404f7316..2bca9e81ca2 100644
--- a/packages/grid/test/column.test.js
+++ b/packages/grid/test/column.test.js
@@ -353,6 +353,16 @@ describe('column', () => {
         expect(grid.$.header.children[0].hidden).to.be.ok;
       });
 
+      it('should not hide the header row with null header and header renderer', () => {
+        emptyColumn.headerRenderer = (root) => {
+          root.textContent = 'foo';
+        };
+        emptyColumn.header = null;
+        grid.removeChild(grid.querySelector('vaadin-grid-column-group'));
+        flushGrid(grid);
+        expect(grid.$.header.children[0].hidden).not.to.be.ok;
+      });
+
       it('should produce an empty header cell', () => {
         emptyColumn.path = 'foo';
         emptyColumn.header = '';