public function testSetBodyFromAst()
{
$php = '<?php function foo() {}';
$reflector = new FunctionReflector(new StringSourceLocator($php));
$function = $reflector->reflect('foo');
$function->setBodyFromAst([new Echo_([new String_('Hello world!')])]);
$this->assertSame("echo 'Hello world!';", $function->getBodyCode());
}