Piwik\Config::getFromCommonConfig PHP Method

    public function getFromCommonConfig($name)
    {
        return $this->settings->getIniFileChain()->getFrom($this->getCommonPath(), $name);
    }

 public function testFromCommonConfig()
 {
     $userFile = PIWIK_INCLUDE_PATH . '/tests/resources/Config/config.ini.php';
     $globalFile = PIWIK_INCLUDE_PATH . '/tests/resources/Config/global.ini.php';
     $commonFile = PIWIK_INCLUDE_PATH . '/tests/resources/Config/common.config.ini.php';
     $config = new Config(new GlobalSettingsProvider($globalFile, $userFile, $commonFile));
     $configCategory = $config->getFromCommonConfig('Category');
     $this->assertEquals(array('key2' => 'valueCommon', 'key3' => '${@piwik(crash))}'), $configCategory);
 }