Add tests to check remote url

Author: MattKetmo

tests/Gitonomy/Git/Tests/AdminTest.php

@@ -100,6 +100,23 @@ public function testMirror($repository)
         }
     }
 
+    /**
+     * @dataProvider provideFoobar
+     */
+    public function testCheckValidRepository($repository)
+    {
+        $url = $repository->getGitDir();
+        $this->assertTrue(Admin::isValidRepository($url));
+    }
+
+    public function testCheckInvalidRepository()
+    {
+        $url = $this->tmpDir.'/invalid.git';
+        mkdir($url);
+
+        $this->assertFalse(Admin::isValidRepository($url));
+    }
+
     /**
      * @expectedException RuntimeException
      */