Add some basic tests for the beginning

tests/test1.php

@@ -0,0 +1,9 @@
+<?php
+
+	class Test1 {
+	}
+
+$test = new Test1();
+var_dump($test);
+
+?>

tests/test2.php

@@ -0,0 +1,12 @@
+<?php
+
+	class Test1 {
+	}
+
+	class Test2 extends Test1 {
+	}
+
+$test = new Test2();
+var_dump($test);
+
+?>

tests/test3.php

@@ -0,0 +1,16 @@
+<?php
+
+	class Test1 {
+		public $arg = 'Hello World!';
+	}
+
+	class Test2 extends Test1 {
+		public function test() {
+			echo $this->arg;
+		}
+	}
+
+$test = new Test2();
+$test->test();
+
+?>