diff --git a/tests/ResetTest.php b/tests/ResetTest.php
new file mode 100644
index 000000000..c2629df10
--- /dev/null
+++ b/tests/ResetTest.php
@@ -0,0 +1,26 @@
+<?php declare(strict_types=1);
+
+namespace GraphQL\Tests;
+
+use GraphQL\Type\Definition\Directive;
+use GraphQL\Type\Definition\Type;
+use GraphQL\Type\Introspection;
+use PHPUnit\Framework\TestCase;
+
+final class ResetTest extends TestCase
+{
+    public function testReset(): void
+    {
+        $string = Type::string();
+        $schema = Introspection::_schema();
+        $directives = Directive::getInternalDirectives();
+
+        Type::reset();
+        Introspection::reset();
+        Directive::reset();
+
+        self::assertNotSame($string, Type::string());
+        self::assertNotSame($schema, Introspection::_schema());
+        self::assertNotSame($directives, Directive::getInternalDirectives());
+    }
+}