Add broken test for __call behavior

Author: nikic

Zend/tests/named_params/__call.phpt

@@ -0,0 +1,27 @@
+--TEST--
+Check that __invoke() works with named parameters
+--FILE--
+<?php
+
+class Test {
+    public function __call(string $method, array $args) {
+        $this->{'_'.$method}(...$args);
+    }
+
+    private function _method($a = 'a', $b = 'b') {
+        echo "a: $a, b: $b\n";
+    }
+}
+
+$test = new Test;
+$test->method('A', 'B');
+$test->method(a: 'A', b: 'B');
+
+?>
+--EXPECTF--
+a: A, b: B
+
+Fatal error: Uncaught Error: Unknown named parameter $a in %s:%d
+Stack trace:
+#0 {main}
+  thrown in %s on line %d