@Test
 public void loadFromFile() throws IOException {
   File file = File.createTempFile("test", ".properties");
   FileUtils.writeStringToFile(file, "a=b\nc=d\n");
   Properties properties = new Properties();
   PropertiesUtil.loadFromFile(properties, file);
   Assert.assertEquals("b", properties.get("a"));
 }
 @Before
 public void setup() throws IOException {
   final Properties properties = new Properties();
   PropertiesUtil.loadFromFile(properties, PropertiesUtil.findConfigFile("config.properties"));
   api = new NiciraNvpApi();
   api.setControllerAddress(properties.getProperty("nvp.host"));
   api.setAdminCredentials(
       properties.getProperty("nvp.admin.user"), properties.getProperty("nvp.admin.pwd"));
 }