[Fact]
public async Task AverageUsersAge_When_Repository_Return_Null_Then_Zero_Should_Be_Returned()
{
    _userRepository.Setup(a => a.GetAllUsers())
        .ReturnsAsync((List<User>)null);
    var result = await _userService.AverageUsersAge();
    result.Should().Be(0);
}
[Fact]
public async Task AverageUsersAge_When_Repository_Return_Empty_Then_Zero_Should_Be_Returned()
{
    _userRepository.Setup(a => a.GetAllUsers())
        .ReturnsAsync(new List<User>());
    var result = await _userService.AverageUsersAge();
    result.Should().Be(0);
}
[Fact]
public async Task AverageUsersAge_When_Repository_Return_List_Of_Users_Then_Average_Of_Age_Should_Be_Retunred()
{

    _userRepository.Setup(a => a.GetAllUsers())
        .ReturnsAsync(UserMockData.People);
    var result = await _userService.AverageUsersAge();
    var expected = (UserMockData.AdultUser.Age + UserMockData.ChildUser.Age + UserMockData.InfantUser.Age) / 3;
    result.Should().Be(expected);
}

dotnet tool install -g dotnet-reportgenerator-globaltool

dotnet test --collect:"XPlat Code Coverage"

reportgenerator -reports:"C:\Users\Farhad\source\repos\xUnitExample\xUnitExample.Tests\TestResults\*\coverage.cobertura.xml" -targetdir:"coveragereport" -reporttypes:Html

2021-11-18T14:05:02: Arguments
2021-11-18T14:05:02:  -reports:C:\Users\Farhad\source\repos\xUnitExample\xUnitExample.Tests\TestResults\*\coverage.cobertura.xml
2021-11-18T14:05:02:  -targetdir:coveragereport
2021-11-18T14:05:02:  -reporttypes:Html
2021-11-18T14:05:02: Writing report file 'coveragereport\index.html'
2021-11-18T14:05:02: Report generation took 0.3 seconds

 @Html.Stimulsoft().StiMvcViewer("MVCViewer1", new StiMvcViewerOptions()
           {
               Actions = new StiMvcViewerOptions.ActionOptions()
               {
                   GetReportSnapshot =
                   Url.Action(
                       MVC.TableProduct.Report.ActionNames.CustomReportSnapshot,
                   MVC.TableProduct.Report.Name, new { area = MVC.TableProduct.Name }, "http"),
                   ViewerEvent =
                   Url.Action(
                       MVC.TableProduct.Report.ActionNames.CustomViewerEvent,
                       MVC.TableProduct.Report.Name, new { area = MVC.TableProduct.Name }, "http"),
                   PrintReport =
                   Url.Action(
                       MVC.TableProduct.Report.ActionNames.CustomPrintReport,
                       MVC.TableProduct.Report.Name, new { area = MVC.TableProduct.Name },"http"),
               },
               Server = new StiMvcViewerOptions.ServerOptions()
               {
                   PassFormValues = true,
                   GlobalReportCache = false,
                   Controller = MVC.TableProduct.Report.Name

               },
               Exports = new StiMvcViewerOptions.ExportOptions()
               {
                   ShowExportToPdf = true,
                   ShowExportToCsv = true
               },
               Toolbar = new StiMvcViewerOptions.ToolbarOptions()
               {
                   ShowDesignButton = false,
                   ShowEditorButton = false,
                   ShowParametersButton = false,
                   ShowViewModeButton = true
               },

               Localization = "~/Content/Stimulsoft/Localization/fa.xml",
               Width = Unit.Percentage(100),
               Theme = StiTheme.Office2013,

           })