--- /dev/null
+--TEST--
+Test frozen services
+--SKIPIF--
+<?php if (!extension_loaded("pimple")) print "skip"; ?>
+--FILE--
+<?php
+$p = new Pimple\Container();
+$p[42] = 'foo';
+$p[42] = 'bar';
+
+$p['foo'] = function () { };
+$p['foo'] = function () { };
+
+$a = $p['foo'];
+
+try {
+ $p['foo'] = function () { };
+ echo "Exception excpected";
+} catch (RuntimeException $e) { }
+
+$p[42] = function() { };
+$a = $p[42];
+
+try {
+ $p[42] = function () { };
+ echo "Exception excpected";
+} catch (RuntimeException $e) { }
+?>
+--EXPECTF--