/// <summary>
/// Gets testing statistic.
/// </summary>
/// <returns> BllTestingStatistic instance.</returns>
public BllTestingStatistic GetStatistics()
{
var userStatistics = new List <BllUserTestingStatistic>();
var testResults = service.GetAllTestResults().ToList();
return(new BllTestingStatistic
{
UserStatistics = GetUserStatistics(testResults),
TotalNumberOfTests = testService.GetAllTests().Count(),
CreatedTestsPerDay = GetTestsPerDay(testService.GetAllTests(), t => t.Created),
CompletedTestsPerDay = GetTestsPerDay(testResults, tr => tr.DateTime),
TotalTestingTime = GetTotalTestingTime(testResults)
});
}