diff --git a/.docs/README.md b/.docs/README.md
index 0cbbf89..c5d1b8e 100644
--- a/.docs/README.md
+++ b/.docs/README.md
@@ -144,7 +144,6 @@ When you are directly on some api url, you can use query parameter `?__apiDocuGe
 apiDocu:
 	apiDir: "%wwwDir%/api"
 
-
 extensions:
 	apiRouter: Contributte\ApiRouter\DI\ApiRouterExtension
 	apiDocu: Contributte\ApiDocu\DI\ApiDocuExtension
diff --git a/tests/.coveralls.yml b/tests/.coveralls.yml
new file mode 100644
index 0000000..a5dd742
--- /dev/null
+++ b/tests/.coveralls.yml
@@ -0,0 +1,4 @@
+# for php-coveralls
+service_name: php-coveralls
+coverage_clover: coverage.xml
+json_path: coverage.json
diff --git a/tests/.gitignore b/tests/.gitignore
new file mode 100644
index 0000000..f0d3402
--- /dev/null
+++ b/tests/.gitignore
@@ -0,0 +1,10 @@
+# Folders - recursive
+*.expected
+*.actual
+
+# Folders
+/tmp
+
+# Files
+/*.log
+/*.html
diff --git a/tests/.gitkeep b/tests/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/tests/Cases/DI/ApiDocuExtension.phpt b/tests/Cases/DI/ApiDocuExtension.phpt
new file mode 100644
index 0000000..2e3cb03
--- /dev/null
+++ b/tests/Cases/DI/ApiDocuExtension.phpt
@@ -0,0 +1,43 @@
+<?php declare(strict_types = 1);
+
+use Contributte\ApiDocu\DI\ApiDocuExtension;
+use Contributte\ApiDocu\Generator;
+use Contributte\ApiRouter\DI\ApiRouterExtension;
+use Contributte\Tester\Environment;
+use Contributte\Tester\Toolkit;
+use Nette\Bridges\ApplicationDI\LatteExtension;
+use Nette\Bridges\HttpDI\HttpExtension;
+use Nette\DI\Compiler;
+use Nette\DI\Container;
+use Nette\DI\ContainerLoader;
+use Tester\Assert;
+
+require_once __DIR__ . '/../../bootstrap.php';
+
+Toolkit::test(function (): void {
+	$loader = new ContainerLoader(Environment::getTestDir(), true);
+	$class = $loader->load(function (Compiler $compiler): void {
+		$compiler->addExtension('apiRouter', new ApiRouterExtension());
+		$compiler->addExtension('apiDocu', new ApiDocuExtension());
+		$compiler->addExtension('http', new HttpExtension());
+		$compiler->addExtension('latte', new LatteExtension(Environment::getTestDir()));
+
+		$compiler->addConfig([
+			'parameters' => [
+				'wwwDir' => Environment::getTestDir(),
+				'tempDir' => Environment::getTestDir(),
+				'debugMode' => false,
+			],
+		]);
+		$compiler->addConfig(\Contributte\Tester\Utils\Neonkit::load(<<<'NEON'
+		services:
+			router: Nette\Routing\SimpleRouter
+		NEON
+		));
+	});
+
+	/** @var Container $container */
+	$container = new $class();
+
+	Assert::type(Generator::class, $container->getByType(Generator::class));
+});
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..86c92a0
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,10 @@
+<?php declare(strict_types = 1);
+
+use Contributte\Tester\Environment;
+
+if (@!include __DIR__ . '/../vendor/autoload.php') {
+	echo 'Install Nette Tester using `composer update --dev`';
+	exit(1);
+}
+
+Environment::setup(__DIR__);