diff --git a/tests/load_module.aer b/tests/load_module.aer
new file mode 100644
index 0000000..e86be05
--- /dev/null
+++ b/tests/load_module.aer
@@ -0,0 +1,9 @@
+final class Main {
+	function __construct() {
+		var_dump(function_exists('dummy_function'));
+		var_dump(import('dummy'));
+		var_dump(function_exists('dummy_function'));
+	}
+}
+
+new Main();
diff --git a/tests/load_module.exp b/tests/load_module.exp
new file mode 100644
index 0000000..b551b69
--- /dev/null
+++ b/tests/load_module.exp
@@ -0,0 +1,3 @@
+bool(FALSE)
+bool(TRUE)
+bool(TRUE)
diff --git a/tests/singleton_test.aer b/tests/singleton_test.aer
new file mode 100644
index 0000000..3c9da40
--- /dev/null
+++ b/tests/singleton_test.aer
@@ -0,0 +1,34 @@
+final class Test {
+	private $value;
+
+	private function __construct() {
+	}
+
+	/* This is singleton */
+	public function getInstance() {
+		static $instance;
+		if(!$instance) {
+			$instance = new Test();
+		}
+		return $instance;
+	}
+
+	public function get() {
+		return $this->value;
+	}
+
+	public function set($value = 0) {
+		$this->value = $value;
+	}
+}
+
+final class Main {
+	public function __construct() {
+		$testA = Test::getInstance();
+		$testA->set(5);
+		$testB = Test::getInstance();
+		var_dump($testB->get());
+	}
+} /* class */
+
+new Main();
diff --git a/tests/singleton_test.exp b/tests/singleton_test.exp
new file mode 100644
index 0000000..a3b0315
--- /dev/null
+++ b/tests/singleton_test.exp
@@ -0,0 +1 @@
+int(5)