add test case for #220

Author: fsw

Magento2/Tests/Namespaces/ImportsFromTestNamespaceUnitTest.inc

@@ -3,4 +3,5 @@ use Magento\Tests;
 use Magento\Foo\Tests as FakeTest;
 use Magento\Real\Classes;
 use \Magento\{Tests\String, Tests\Int};
-use \Magento\{Foo\string, Bar\float};
+use \Magento\{Foo\string, Bar\float};
+use \Foo\{Trailing, Space,};