getFilename() public method

returns the filename we loaded this config from
public getFilename ( ) : string | null
return string | null
 /**
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::loadConfigFromFile()
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::getConfig()
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::setConfig()
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::getName()
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::setName()
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::getFilename()
  * @covers DataSift\Storyplayer\ConfigLib\WrappedConfig::setFilename()
  */
 public function testCanLoadConfigFile()
 {
     // ----------------------------------------------------------------
     // setup your test
     $expectedConfig = new BaseObject();
     $expectedConfig->dummy1 = true;
     $expectedName = "wrapped-config-1";
     $expectedFilename = __DIR__ . "/wrapped-config-1.json";
     $obj = new WrappedConfig();
     // ----------------------------------------------------------------
     // perform the change
     $obj->loadConfigFromFile($expectedFilename);
     // ----------------------------------------------------------------
     // test the results
     $actualConfig = $obj->getConfig();
     $actualName = $obj->getName();
     $actualFilename = $obj->getFilename();
     $this->assertEquals($expectedConfig, $actualConfig);
     $this->assertEquals($expectedName, $actualName);
     $this->assertEquals($expectedFilename, $actualFilename);
 }