public function testGetChartUsageForUpdate()
{
$username = '******';
$usage = 2314234;
$this->config->expects($this->once())->method('getUsername')->willReturn($username);
$this->storage->expects($this->once())->method('getStorageUsage')->willReturn($usage);
$result = $this->abstractProvider->getChartUsageForUpdate();
$this->assertInstanceOf('OCA\\ocUsageCharts\\Entity\\Storage\\StorageUsage', $result);
$this->assertEquals($username, $result->getUsername());
$this->assertEquals($usage, $result->getUsage());
}