Fix tests and invalid use statements

tests/Composer/Test/Repository/ArrayRepositoryTest.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Test\Repository;
+
+use Composer\Repository\ArrayRepository;
+use Composer\Package\MemoryPackage;
+
+class ArrayRepositoryTest extends \PHPUnit_Framework_TestCase
+{
+    public function testAddLiteral()
+    {
+        $repo = new ArrayRepository;
+        $repo->addPackage(new MemoryPackage('foo', '1'));
+
+        $this->assertEquals(1, count($repo));
+    }
+}