diff --git a/tests/Unit/Core/UtilitiesTest.php b/tests/Unit/Core/UtilitiesTest.php
new file mode 100644
index 0000000..48154e5
--- /dev/null
+++ b/tests/Unit/Core/UtilitiesTest.php
@@ -0,0 +1,11 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Tests\Unit\Core;
+
+use App\Utilities;
+use PHPUnit\Framework\TestCase;
+
+final class UtilitiesTest extends TestCase {
+    // TODO
+}
diff --git a/tests/Unit/Trait/HasLoggerTraitTest.php b/tests/Unit/Trait/HasLoggerTraitTest.php
new file mode 100644
index 0000000..6a49454
--- /dev/null
+++ b/tests/Unit/Trait/HasLoggerTraitTest.php
@@ -0,0 +1,13 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Tests\Unit\Trait;
+
+use App\Trait\HasLoggerTrait;
+use PHPUnit\Framework\TestCase;
+
+final class HasLoggerTraitTest extends TestCase {
+    use HasLoggerTrait;
+
+    // TODO
+}
diff --git a/tests/Unit/Trait/MakeNonceTraitTest.php b/tests/Unit/Trait/MakeNonceTraitTest.php
new file mode 100644
index 0000000..9390f67
--- /dev/null
+++ b/tests/Unit/Trait/MakeNonceTraitTest.php
@@ -0,0 +1,13 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Tests\Unit\Trait;
+
+use App\Trait\MakeNonceTrait;
+use PHPUnit\Framework\TestCase;
+
+final class MakeNonceTraitTest extends TestCase {
+    use MakeNonceTrait;
+
+    // TODO
+}