Add test on constructor get-accessor.

tests/get_constructor.phpt

@@ -0,0 +1,42 @@
+--TEST--
+Test V8::executeString() : Get constructor method
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--FILE--
+<?php
+
+class Foo {
+	function Foo() {
+		echo "called constructor: ";
+		var_dump(func_get_args());
+	}
+}
+
+$v8 = new V8JS();
+$v8->foo = new Foo(23);
+
+$js = <<<EOF
+var_dump(PHP.foo.constructor);
+
+c = PHP.foo.constructor;
+bar = new c(42);
+
+EOF
+;
+$v8->executeString($js);
+
+?>
+===EOF===
+--EXPECTF--
+called constructor: array(1) {
+  [0]=>
+  int(23)
+}
+object(Closure)#%d {
+    function Foo() { [native code] }
+}
+called constructor: array(1) {
+  [0]=>
+  int(42)
+}
+===EOF===