A means of defining and executing sets of data
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src updating assemblyinfos Mar 4, 2016


Test Data

Install Core

Install-Package TestData.Interface

Web Api Support

Install-Package TestData.Interface.Web

MediatR Support

Install-Package TestData.Interface.MediatR

Csv (FileSets) Support

Install-Package TestData.Interface.Files

Angular front end

This is designed to work with the webapi TestDataController which uses the attribute route prefix /api/testdata. However you could use any backend provided it accepts and returns data in the expected format. The test data UI is served on the client route: /testdata.

bower install ng-test-data --save

TestDataController returns a list of datasets in this format. It accepts a get request with no parameters.

descriptors.Select(d => new
      Dependencies = d.Dependencies.Select(t => t.FullName),
      TypeName = d.Type.Name,
      Properties = d.Properties.Select(p => new
          FieldName = p.MemberInfo.Name,

DataSet request payloads should match below. It makes a post request.

public interface IDataSetRequest
    string DataSet { get; }
    IDictionary<string, IDictionary<string, string>> Properties { get; }

Configuring your angular application

You will need to require the module test-data and register a constant called apiBase. Do not include a trailing forward slash. This is the base path used to make the request e.g. /api becomes /api/testdata.

angular.module('app', ['ngTestData'])
  .constant('apiBase', '/api');

Configuring for AutoFac and MediatR

//Assemblies = AppDomain.CurrentDomain.GetAssemblies().Where(a => a.GetName().Name.StartsWith("demo") || a.GetName().Name.StartsWith("TestData")).ToArray();

void RegisterTestData(ContainerBuilder builder)
    builder.RegisterTypes(Assemblies.SelectMany(a => a.GetTypes()).Where(x => !x.IsAbstract && typeof(IDataSet).IsAssignableFrom(x)).ToArray());

        .Register<Func<Type, IDataSet>>(x =>
            var scope = x.Resolve<ILifetimeScope>();
            return (t) => scope.Resolve(t) as IDataSet;

        .Register(x =>
            var mediator = x.Resolve<IMediator>();
            var dispatcher = new MediatRDispatcher(mediator);
            return dispatcher;


The string returned from a dataset is returned to the client (to be used as feedback).

Sample DataSet

This example is a bit contrived but demonstrates specifying a property and making use of it.

[DataSet("Cities", "A list of cities")]
public class CityDataSet : IDataSet
    private readonly IDbContext _dbContext;

    public  CityDataSet(IDbContext dbContext)
        _dbContext = dbContext;

    [DataSetProperty("Prefix", DataType.String, "Prefix the city name")]
    public string Prefix { get; set; }

    public async Task<string> Execute()
        var city = new City
            Name = Prefix + " Melbourne"

        var cities = _dbContext.Set<City>();

        await _dbContext.SaveChangesAsync();

        return "Inserted 1 City";

This example shows reading data from a CSV. The csv path is relative to the assembly containing the DataSet.

[DataSet("States", "A list of states")]
public class StateDataSet : IDataSet
    private readonly IDbSet<State> _states;

    public StateDataSet(IDbSet<State> states)
        _states = states;

    [DataSetProperty("Starts With", DataType.String, "Filter the states inserted", Required = true)]
    public string StartsWith { get; set; }

    [DataSetProperty("Created On", DataType.Date, "Date the states were created on")]
    public DateTime CreatedOn { get; set; }

    public async Task<string> Execute()
        int count = 0;
        States.ForEach(stateRecord =>
            if (StartsWith != null && !stateRecord.Name.StartsWith(StartsWith))

            var state = new State
                Name = stateRecord.Name,
                CreatedOn = CreatedOn
            count ++;

        }, this);

        return String.Format("Inserted {0} States", count);

    public FileDataSetInstance<State> States { get; set; }