From d7767dc889e728420afe311049ce63d29c0e5db5 Mon Sep 17 00:00:00 2001
From: "John Paul E. Balandan, CPA" <paulbalandan@gmail.com>
Date: Fri, 27 Feb 2026 20:43:12 +0800
Subject: [PATCH] test: add test that DBs throw error on too long inputs

---
 tests/system/Database/Live/InsertTest.php | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tests/system/Database/Live/InsertTest.php b/tests/system/Database/Live/InsertTest.php
index 1483d660c174..9527c14fa189 100644
--- a/tests/system/Database/Live/InsertTest.php
+++ b/tests/system/Database/Live/InsertTest.php
@@ -275,4 +275,18 @@ public function testInsertBatchWithQueryAndRawSqlAndManualColumns(): void
 
         $this->forge->dropTable('user2', true);
     }
+
+    public function testInsertWithTooLongCharactersThrowsError(): void
+    {
+        if ($this->db->DBDriver === 'SQLite3') {
+            $this->markTestSkipped('SQLite does not enforce VARCHAR length constraints.');
+        }
+
+        $this->expectException(DatabaseException::class);
+
+        $this->db->table('misc')->insert([
+            'key'   => 'too_long',
+            'value' => str_repeat('a', 401), // 'value' is VARCHAR(400), so this should throw an error
+        ]);
+    }
 }