fixed mobile

tests/Unit/ExampleTest.php

@@ -2,15 +2,15 @@
 
 namespace Tests\Unit;
 
-use Illuminate\Foundation\Testing\RefreshDatabase;
 use PHPUnit\Framework\TestCase;
 
 class ExampleTest extends TestCase
 {
-    use RefreshDatabase;
-
-    public function test_that_true_is_true(): void
+    /**
+     * Keep the base PHPUnit harness covered with a real assertion.
+     */
+    public function test_phpunit_harness_is_available(): void
     {
-        $this->assertTrue(true);
+        $this->assertTrue(class_exists(TestCase::class));
     }
 }