Add test to verify method parameters type hint

Author: pinepain

tests/001-verify-method-parameters-type.phpt

@@ -0,0 +1,73 @@
+--TEST--
+Check whether all method parameters have valid type
+--SKIPIF--
+<?php if (!extension_loaded("v8")) print "skip"; ?>
+--FILE--
+<?php
+$re = new ReflectionExtension('v8');
+
+$classes = $re->getClasses();
+
+
+class Verifier
+{
+    private $invalid = [];
+
+    public function verifyClass(ReflectionClass $class)
+    {
+        foreach ($class->getMethods() as $m) {
+            $this->verifyMethod($m);
+        }
+    }
+
+    public function verifyMethod(ReflectionMethod $method)
+    {
+        foreach ($method->getParameters() as $p) {
+            $this->verifyParameter($p);
+        }
+    }
+
+    public function verifyParameter(ReflectionParameter $parameter)
+    {
+        $type = $parameter->getType();
+
+        if (!$type || $type->isBuiltin()) {
+            return;
+        }
+
+        if (!(class_exists($type))) {
+            $method_name = $parameter->getDeclaringClass()->getName() . '::' . $parameter->getDeclaringFunction()->getName();
+            $param_name  = $parameter->getName();
+
+            $shortcut = $method_name . '/' . $param_name;
+
+            if (isset($this->invalid[$shortcut])) {
+                return;
+            }
+
+            $this->invalid[$shortcut] = true;
+
+            echo "{$method_name}() method's parameter {$parameter->getName()} has invalid type ($type)", PHP_EOL;
+        }
+    }
+
+    public function isValid()
+    {
+        return empty($this->invalid);
+    }
+}
+
+$v = new Verifier();
+
+
+foreach ($classes as $c) {
+    $v->verifyClass($c);
+}
+
+if ($v->isValid()) {
+    echo 'All method parameters are valid', PHP_EOL;
+}
+
+?>
+--EXPECT--
+All method parameters are valid