Rename x7zip test file

Author: raulfraile

tests/Method/Command/X7ZipTest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Distill\Tests\Method\Command;
+
+use Distill\Method;
+use Distill\Format;
+use Distill\Tests\Method\AbstractMethodTest;
+
+class X7ZipTest extends AbstractMethodTest
+{
+    public function setUp()
+    {
+        $this->method = new Method\Command\X7Zip();
+
+        if (false === $this->method->isSupported()) {
+            $this->markTestSkipped('The 7zip command is not installed');
+        }
+
+        parent::setUp();
+    }
+
+    public function test7zFormatIn7zipMethod()
+    {
+        $this->checkFormatUsingMethod(new Format\Simple\X7z(), $this->method);
+    }
+
+}