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QueryableTests.Distinct.cs
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using System.Collections.Generic;
using System.Linq.Dynamic.Core.Tests.Helpers.Models;
using Xunit;
namespace System.Linq.Dynamic.Core.Tests
{
public partial class QueryableTests
{
[Fact]
public void Distinct()
{
//Arrange
var list = new[] { 1, 2, 2, 3 };
IQueryable queryable = list.AsQueryable();
//Act
var expected = Queryable.Distinct(list.AsQueryable());
var result = queryable.Distinct();
//Assert
Assert.Equal(expected, result);
}
[Fact]
public void Distinct_Dynamic_1()
{
//Arrange
var list = new[]
{
new { x = "a", list = new[] { 1, 2, 2, 3 } },
new { x = "b", list = new[] { 5, 6, 6, 8 } },
};
IQueryable queryable = list.AsQueryable();
//Act
var expected = list.Select(l => l.list.Distinct()).ToArray<object>();
var result = queryable.Select("list.Distinct()").ToDynamicArray();
//Assert
Assert.Equal(expected, result);
}
[Fact]
public void Distinct_Dynamic_2()
{
//Arrange
var list = new[]
{
new User { UserName = "a", Income = 1 },
new User { UserName = "a", Income = 2 },
new User { UserName = "b", Income = 1 }
};
//Act
var expected = list.Select(u => u.UserName).Distinct().ToArray();
IQueryable queryable = list.AsQueryable();
var result = queryable.Select("UserName").Distinct().ToDynamicArray<string>();
//Assert
Assert.Equal(expected, result);
}
}
}