update

tests/unit/RememberTokenModelTest.php

@@ -0,0 +1,34 @@
+<?php
+
+use App\Models\RememberTokenModel;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\DatabaseTestTrait;
+
+/**
+ * @internal
+ */
+final class RememberTokenModelTest extends CIUnitTestCase
+{
+    use DatabaseTestTrait;
+
+    protected $namespace = 'App';
+    protected $refresh = true;
+
+    public function testTokensRemainIndependentAcrossDevices(): void
+    {
+        $model = new RememberTokenModel();
+        $first = $model->issueToken();
+        $second = $model->issueToken();
+
+        $this->assertTrue($model->verifyToken($first));
+        $this->assertTrue($model->verifyToken($second));
+
+        $tampered = substr($first, 0, -1) . (str_ends_with($first, '0') ? '1' : '0');
+        $this->assertFalse($model->verifyToken($tampered));
+
+        $model->deleteToken($first);
+
+        $this->assertFalse($model->verifyToken($first));
+        $this->assertTrue($model->verifyToken($second));
+    }
+}