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QueryableTests.GroupBy.cs
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using System.Collections.Generic;
using NFluent;
using System.Linq.Dynamic.Core.Exceptions;
using System.Linq.Dynamic.Core.Tests.Helpers.Models;
using System.Reflection;
using Newtonsoft.Json;
using Xunit;
using FluentAssertions;
namespace System.Linq.Dynamic.Core.Tests;
public partial class QueryableTests
{
public class DataSetA
{
public DateTime Time { get; set; }
public int? I { get; set; }
}
public class DateTimeTest
{
public DateTimeTest? Test { get; set; }
public DateTime? D { get; set; }
}
[Fact]
public void GroupBy_Dynamic()
{
//Arrange
var testList = User.GenerateSampleModels(100);
var qry = testList.AsQueryable();
//Act
var byAgeReturnUserName = qry.GroupBy("Profile.Age", "UserName");
var byAgeReturnAll = qry.GroupBy("Profile.Age");
//Assert
Assert.Equal(testList.GroupBy(x => x.Profile.Age).Count(), byAgeReturnUserName.Count());
Assert.Equal(testList.GroupBy(x => x.Profile.Age).Count(), byAgeReturnAll.Count());
}
[Fact]
public void GroupBy_Dynamic_NullableDateTime()
{
// Arrange
var qry = new[] { new DateTime(2020, 1, 1), (DateTime?)null }.AsQueryable();
// Act
var byYear = qry.GroupBy("np(Value.Year, 2019)").ToDynamicArray();
// Assert
byYear.Should().HaveCount(2);
}
[Fact]
public void GroupBy_Dynamic_NullableDateTime_2Levels()
{
// Arrange
var qry = new[]
{
new DateTimeTest { Test = new DateTimeTest { D = new DateTime(2020, 1, 1) } },
new DateTimeTest { Test = null }
}.AsQueryable();
// Act
var byYear = qry.GroupBy("np(Test.D.Value.Year, 2019)").ToDynamicArray();
// Assert
byYear.Should().HaveCount(2);
}
[Fact]
public void GroupBy_Dynamic_NullableDateTime_3Levels()
{
// Arrange
var qry = new[]
{
new DateTimeTest { Test = new DateTimeTest { Test = new DateTimeTest { D = new DateTime(2020, 1, 1) } } },
new DateTimeTest { Test = null }
}.AsQueryable();
// Act
var byYear = qry.GroupBy("np(Test.Test.D.Value.Year, 2019)").ToDynamicArray();
// Assert
byYear.Should().HaveCount(2);
}
// https://github.com/StefH/System.Linq.Dynamic.Core/issues/75
[Fact]
public void GroupBy_Dynamic_Issue75()
{
var testList = User.GenerateSampleModels(100);
var resultDynamic = testList.AsQueryable().GroupBy("Profile.Age").Select("new (it.key as PropertyKey)");
var result = testList.GroupBy(e => e.Profile.Age).Select(e => new { PropertyKey = e.Key }).AsQueryable();
// I think this should be true, but it isn't. dynamicResult add System.Object Item [System.String] property.
PropertyInfo[] properties = result.ElementType.GetTypeInfo().GetProperties();
PropertyInfo[] propertiesDynamic = resultDynamic.ElementType.GetTypeInfo().GetProperties();
Check.That(propertiesDynamic.Length).IsStrictlyGreaterThan(properties.Length);
}
[Fact]
public void GroupBy_Dynamic_Exceptions()
{
//Arrange
var testList = User.GenerateSampleModels(100, allowNullableProfiles: true);
var qry = testList.AsQueryable();
//Act
Assert.Throws<ParseException>(() => qry.GroupBy("Bad"));
Assert.Throws<ParseException>(() => qry.GroupBy("Id, UserName"));
Assert.Throws<ParseException>(() => qry.GroupBy("new Id, UserName"));
Assert.Throws<ParseException>(() => qry.GroupBy("new (Id, UserName"));
Assert.Throws<ParseException>(() => qry.GroupBy("new (Id, UserName, Bad)"));
Assert.Throws<ArgumentNullException>(() => DynamicQueryableExtensions.GroupBy((IQueryable<string>)null, "Id"));
Assert.Throws<ArgumentNullException>(() => qry.GroupBy(null));
Assert.Throws<ArgumentException>(() => qry.GroupBy(""));
Assert.Throws<ArgumentException>(() => qry.GroupBy(" "));
Assert.Throws<ArgumentNullException>(() => qry.GroupBy("Id", (string)null));
Assert.Throws<ArgumentException>(() => qry.GroupBy("Id", ""));
Assert.Throws<ArgumentException>(() => qry.GroupBy("Id", " "));
}
[Fact(Skip = "This test is skipped because it fails in CI.")]
public void GroupBy_Dynamic_Issue403()
{
var data = new List<object> {
new { ItemCode = "AAAA", Flag = true, SoNo="aaa",JobNo="JNO01" } ,
new { ItemCode = "AAAA", Flag = true, SoNo="aaa",JobNo="JNO02" } ,
new { ItemCode = "AAAA", Flag = false, SoNo="aaa",JobNo="JNO03" } ,
new { ItemCode = "BBBB", Flag = true, SoNo="bbb",JobNo="JNO04" },
new { ItemCode = "BBBB", Flag = true, SoNo="bbb",JobNo="JNO05" } ,
new { ItemCode = "BBBB", Flag = true, SoNo="ccc",JobNo="JNO06" } ,
};
var jsonString = JsonConvert.SerializeObject(data);
var list = JsonConvert.DeserializeObject<List<Dictionary<string, object>>>(jsonString);
var groupList = list.AsQueryable().GroupBy("new (ItemCode, Flag)").ToDynamicList();
Assert.Equal(3, groupList.Count);
}
[Fact]
public void GroupBy_Dynamic_SelectWhereMin()
{
// Arrange
var q = new[]
{
new DataSetA
{
I = 5
},
new DataSetA
{
I = 7
}
}
.AsQueryable();
// Act
var result = q
.GroupBy(x => x.Time)
.Select(x => new { q = x.Select(d => d.I).Where(d => d != null).Min() })
.ToArray();
var resultDynamic = q
.GroupBy("Time")
.Select("new (Select(I).Where(it != null).Min() as q)")
.ToDynamicArray();
// Assert
resultDynamic.Should().BeEquivalentTo(result);
}
[Fact]
public void GroupBy_Dynamic_SelectWhereMax()
{
// Arrange
var q = new[]
{
new DataSetA
{
I = 5
},
new DataSetA
{
I = 7
}
}
.AsQueryable();
// Act
var result = q
.GroupBy(x => x.Time)
.Select(x => new { q = x.Select(d => d.I).Where(d => d != null).Max() })
.ToArray();
var resultDynamic = q
.GroupBy("Time")
.Select("new (Select(I).Where(it != null).Max() as q)")
.ToDynamicArray();
// Assert
resultDynamic.Should().BeEquivalentTo(result);
}
// #633
[Fact]
public void GroupBy_Dynamic_SelectWhereAverage()
{
// Arrange
var q = new[]
{
new DataSetA
{
I = 5
},
new DataSetA
{
I = 7
}
}
.AsQueryable();
// Act
var result = q
.GroupBy(x => x.Time)
.Select(x => new { q = x.Select(d => d.I).Where(d => d != null).Average() })
.ToArray();
var resultDynamic = q
.GroupBy("Time")
.Select("new (Select(I).Where(it != null).Average() as q)")
.ToDynamicArray();
// Assert
resultDynamic.Should().BeEquivalentTo(result);
}
[Fact]
public void GroupBy_Dynamic_SelectWhereAverageWithSelector()
{
// Arrange
var q = new[]
{
new DataSetA
{
I = 5
},
new DataSetA
{
I = 7
}
}
.AsQueryable();
// Act
var result = q
.GroupBy(x => x.Time)
.Select(x => new { q = x.Select(d => d).Average(y => y.I) })
.ToArray();
var resultDynamic = q
.GroupBy("Time")
.Select("new (Select(it).Average(I) as q)")
.ToDynamicArray();
// Assert
resultDynamic.Should().BeEquivalentTo(result);
}
[Fact]
public void GroupBy_Dynamic_SelectWhereSum()
{
// Arrange
var q = new[]
{
new DataSetA
{
I = 5
},
new DataSetA
{
I = 7
}
}
.AsQueryable();
// Act
var result = q
.GroupBy(x => x.Time)
.Select(x => new { q = x.Select(d => d.I).Where(d => d != null).Sum() })
.ToArray();
var resultDynamic = q
.GroupBy("Time")
.Select("new (Select(I).Where(it != null).Sum() as q)")
.ToDynamicArray();
// Assert
resultDynamic.Should().BeEquivalentTo(result);
}
[Fact]
public void GroupBy_Dynamic_SelectWhereSumWithSelector()
{
// Arrange
var q = new[]
{
new DataSetA
{
I = 5
},
new DataSetA
{
I = 7
}
}
.AsQueryable();
// Act
var result = q
.GroupBy(x => x.Time)
.Select(x => new { q = x.Select(d => d).Sum(y => y.I) })
.ToArray();
var resultDynamic = q
.GroupBy("Time")
.Select("new (Select(it).Sum(I) as q)")
.ToDynamicArray();
// Assert
resultDynamic.Should().BeEquivalentTo(result);
}
}