public function testConfig()
{
$this->assertTrue(is_array($providers = $this->app['config']->get('geocoder.providers')));
$this->assertCount(3, $providers);
$this->assertArrayHasKey(GoogleMaps::class, $providers[Chain::class]);
$this->assertArrayHasKey(FreeGeoIp::class, $providers[Chain::class]);
$this->assertSame(CurlHttpAdapter::class, $this->app['config']->get('geocoder.adapter'));
}