diff --git a/tests/e2e/Services/Database/DatabaseBase.php b/tests/e2e/Services/Database/DatabaseBase.php
index 3e109ca33b..ef0a7ec6fb 100644
--- a/tests/e2e/Services/Database/DatabaseBase.php
+++ b/tests/e2e/Services/Database/DatabaseBase.php
@@ -1089,4 +1089,84 @@ trait DatabaseBase
 
         return $data;
     }
+
+    /**
+     * @depends testDefaultPermissions
+     */
+    public function testUniqueIndexDuplicate(array $data): array
+    {
+        $uniqueIndex = $this->client->call(Client::METHOD_POST, '/database/collections/' . $data['moviesId'] . '/indexes', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+            'x-appwrite-key' => $this->getProject()['apiKey']
+        ]), [
+            'indexId' => 'unique_title',
+            'type' => 'unique',
+            'attributes' => ['title'],
+        ]);
+
+        $this->assertEquals($uniqueIndex['headers']['status-code'], 201);
+
+        sleep(2);
+
+        // test for failure
+        $duplicate = $this->client->call(Client::METHOD_POST, '/database/collections/' . $data['moviesId'] . '/documents', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+        ], $this->getHeaders()), [
+            'documentId' => 'unique()',
+            'data' => [
+                'title' => 'Captain America',
+                'releaseYear' => 1944,
+                'actors' => [
+                    'Chris Evans',
+                    'Samuel Jackson',
+                ]
+            ],
+            'read' => ['user:'.$this->getUser()['$id']],
+            'write' => ['user:'.$this->getUser()['$id']],
+        ]);
+
+        // Test for exception when updating document to conflict
+        $document = $this->client->call(Client::METHOD_POST, '/database/collections/' . $data['moviesId'] . '/documents', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+        ], $this->getHeaders()), [
+            'documentId' => 'unique()',
+            'data' => [
+                'title' => 'Captain America 5',
+                'releaseYear' => 1944,
+                'actors' => [
+                    'Chris Evans',
+                    'Samuel Jackson',
+                ]
+            ],
+            'read' => ['user:'.$this->getUser()['$id']],
+            'write' => ['user:'.$this->getUser()['$id']],
+        ]);
+
+        $this->assertEquals(201, $document['headers']['status-code']);
+
+        // Test for exception when updating document to conflict
+        $duplicate = $this->client->call(Client::METHOD_PATCH, '/database/collections/' . $data['moviesId'] . '/documents/' . $document['body']['$id'], array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+        ], $this->getHeaders()), [
+            'documentId' => 'unique()',
+            'data' => [
+                'title' => 'Captain America',
+                'releaseYear' => 1944,
+                'actors' => [
+                    'Chris Evans',
+                    'Samuel Jackson',
+                ]
+            ],
+            'read' => ['user:'.$this->getUser()['$id']],
+            'write' => ['user:'.$this->getUser()['$id']],
+        ]);
+
+        $this->assertEquals(400, $duplicate['headers']['status-code']);
+
+        return $data;
+    }
 }
\ No newline at end of file