using AutoMapper;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
//指定要測試的class
var summary = BenchmarkRunner.Run<BenchmarkSampleAuto>();
//加入記憶體使用量測試
[MemoryDiagnoser]
public class BenchmarkSampleAuto {
private readonly List<DbModel> _data = new List<DbModel>();
private readonly IMapper _mapper;
public BenchmarkSampleAuto() {
//automapper設定
var config = new MapperConfiguration(cfg => {
cfg.CreateMap<DbModel, ViewModel>();
});
_mapper = new Mapper(config);
//準備一份List資料
PrepareTestObjects();
}
private void PrepareTestObjects() {
_data.Add(new DbModel() { Id = 1, Name = "Bill", Age = 18, CreatedDate = DateTime.Now });
_data.Add(new DbModel() { Id = 1, Name = "CI-YU", Age = 20, CreatedDate = DateTime.Now });
_data.Add(new DbModel() { Id = 1, Name = "Bill Huang", Age = 22, CreatedDate = DateTime.Now });
}
//待測方法需要加上Benchmark屬性
[Benchmark]
public List<ViewModel> first() {
return _mapper.Map<List<ViewModel>>(_data);
}
//待測方法需要加上Benchmark屬性
[Benchmark]
public List<ViewModel> second() {
var listModel = new List<ViewModel>();
foreach (var c in _data) {
listModel.Add(new ViewModel() { Id = c.Id, Name = c.Name, Age = c.Age });
}
return listModel;
}
//待測方法需要加上Benchmark屬性
[Benchmark]
public List<ViewModel> third() {
var listModel = new List<ViewModel>();
listModel = _data.Select(c => new ViewModel() { Id = c.Id, Name = c.Name, Age = c.Age }).ToList();
return listModel;
}
}
public class DbModel {
public int Id { get; set; }
public string? Name { get; set; }
public int Age { get; set; }
public DateTime CreatedDate { get; set; }
}
public class ViewModel {
public ViewModel() {
Name = string.Empty;
}
public int Id { get; set; }
public string Name { get; set; }
public int Age { get; set; }
}
