dotnet-dynamic-query/PoweredSoft.DynamicQuery.Test/AggregateInterceptorTests.cs

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2018-10-23 22:55:41 -04:00
using PoweredSoft.DynamicQuery.Core;
using PoweredSoft.DynamicQuery.Test.Mock;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Xunit;
namespace PoweredSoft.DynamicQuery.Test
{
public class AggregateInterceptorTests
{
private class MockAggregateInterceptor : IAggregateInterceptor
{
public IAggregate InterceptAggregate(IAggregate aggregate) => new Aggregate
{
Path = "Item.Price",
Type = AggregateType.Avg
};
}
[Fact]
public void Simple()
{
MockContextFactory.SeedAndTestContextFor("AggregatorInterceptorTests_Simple", TestSeeders.SimpleSeedScenario, ctx =>
{
var expected = ctx.OrderItems.GroupBy(t => true).Select(t => new
{
PriceAtTheTime = t.Average(t2 => t2.Item.Price)
}).First();
var criteria = new QueryCriteria();
criteria.Aggregates.Add(new Aggregate
{
Type = AggregateType.Avg,
Path = "ItemPrice"
});
var queryHandler = new QueryHandler();
queryHandler.AddInterceptor(new MockAggregateInterceptor());
var result = queryHandler.Execute(ctx.OrderItems, criteria);
Assert.Equal(expected.PriceAtTheTime, result.Aggregates.First().Value);
});
}
}
}