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OrderByThenByTests.cs
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OrderByThenByTests.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Threading;
using Xunit;
namespace System.Linq.Parallel.Tests
{
public static class OrderByThenByTests
{
private const int KeyFactor = 4;
private const int GroupFactor = 8;
private const int LongRunningCount = 16 * 1024;
// Get ranges from 0 to each count. The data is random, seeded from the size of the range.
public static IEnumerable<object[]> OrderByRandomData(int[] counts)
{
foreach (int count in counts)
{
int[] randomInput = GetRandomInput(count);
yield return new object[] { Labeled.Label("Array-Random", randomInput.AsParallel()), count };
yield return new object[] { Labeled.Label("List-Random", randomInput.ToList().AsParallel()), count };
yield return new object[] { Labeled.Label("Partitioner-Random", Partitioner.Create(randomInput).AsParallel()), count };
}
}
private static int[] GetRandomInput(int count)
{
Random source = new Random(count);
int[] data = new int[count];
for (int i = 0; i < count; i++)
{
data[i] = source.Next(count);
}
return data;
}
// Get a set of ranges, from 0 to each count, and an additional parameter denoting degree of parallelism.
public static IEnumerable<object[]> OrderByThreadedData(int[] counts, int[] degrees)
{
foreach (object[] results in UnorderedSources.Ranges(counts, x => degrees.Cast<int>()))
{
yield return results;
}
foreach (object[] results in Sources.Ranges(counts, x => degrees.Cast<int>()))
{
yield return results;
}
foreach (object[] results in OrderByRandomData(counts))
{
foreach (int degree in degrees)
{
yield return new object[] { results[0], results[1], degree };
}
}
}
//
// OrderBy
//
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
int seen = 0;
foreach (int i in labeled.Item.OrderBy(x => x))
{
Assert.InRange(i, prev, count - 1);
prev = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderBy(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_Reversed(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
int seen = 0;
foreach (int i in labeled.Item.OrderBy(x => -x))
{
Assert.InRange(i, 0, prev);
prev = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_Reversed_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderBy_Reversed(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
int seen = 0;
foreach (int i in labeled.Item.OrderByDescending(x => x))
{
Assert.InRange(i, 0, prev);
prev = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderByDescending(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_Reversed(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
int seen = 0;
foreach (int i in labeled.Item.OrderByDescending(x => -x))
{
Assert.InRange(i, prev, count - 1);
prev = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_Reversed_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderByDescending_Reversed(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
int seen = 0;
Assert.All(labeled.Item.OrderBy(x => x).ToList(), x => { Assert.InRange(x, prev, count - 1); prev = x; seen++; });
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderBy_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_Reversed_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
int seen = 0;
Assert.All(labeled.Item.OrderBy(x => -x).ToList(), x => { Assert.InRange(x, 0, prev); prev = x; seen++; });
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_Reversed_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderBy_Reversed_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
int seen = 0;
Assert.All(labeled.Item.OrderByDescending(x => x).ToList(), x => { Assert.InRange(x, 0, prev); prev = x; seen++; });
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderByDescending_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_Reversed_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
int seen = 0;
Assert.All(labeled.Item.OrderByDescending(x => -x).ToList(), x => { Assert.InRange(x, prev, count - 1); prev = x; seen++; });
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_Reversed_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderByDescending_Reversed_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
int seen = 0;
foreach (int i in labeled.Item.OrderBy(x => x, ReverseComparer.Instance))
{
Assert.InRange(i, 0, prev);
prev = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderBy_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
int seen = 0;
foreach (int i in labeled.Item.OrderByDescending(x => x, ReverseComparer.Instance))
{
Assert.InRange(i, prev, count - 1);
prev = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderByDescending_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotPipelined_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
int seen = 0;
Assert.All(labeled.Item.OrderBy(x => x, ReverseComparer.Instance).ToList(), x => { Assert.InRange(x, 0, prev); prev = x; seen++; });
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotPipelined_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderBy_NotPipelined_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotPipelined_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
int seen = 0;
Assert.All(labeled.Item.OrderByDescending(x => x, ReverseComparer.Instance).ToList(), x => { Assert.InRange(x, prev, count - 1); prev = x; seen++; });
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotPipelined_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
OrderByDescending_NotPipelined_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
// Regression test for the PLINQ version of https://github.com/dotnet/runtime/issues/14793 - comparer returning max/min value.
public static void OrderBy_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
foreach (int i in labeled.Item.OrderBy(x => x, new ExtremeComparer<int>()))
{
Assert.InRange(i, prev, count - 1);
prev = i;
}
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
// Regression test for the PLINQ version of https://github.com/dotnet/runtime/issues/14793 - comparer returning max/min value.
public static void OrderByDescending_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
foreach (int i in labeled.Item.OrderByDescending(x => x, new ExtremeComparer<int>()))
{
Assert.InRange(i, 0, prev);
prev = i;
}
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotPipelined_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
Assert.All(labeled.Item.OrderBy(x => x, new ExtremeComparer<int>()).ToList(), x => { Assert.InRange(x, prev, count - 1); prev = x; });
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotPipelined_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
Assert.All(labeled.Item.OrderByDescending(x => x, new ExtremeComparer<int>()).ToList(), x => { Assert.InRange(x, 0, prev); prev = x; });
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 2 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotComparable(Labeled<ParallelQuery<int>> labeled, int count)
{
_ = count;
ParallelQuery<int> query = labeled.Item.OrderBy(x => new NotComparable(x));
AssertThrows.Wrapped<ArgumentException>(() => { foreach (int i in query) ; });
AssertThrows.Wrapped<ArgumentException>(() => query.ToList());
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotComparable_Comparator(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
var comparer = Comparer<NotComparable>.Create((x, y) => ReverseComparer.Instance.Compare(x.Value, y.Value));
foreach (int i in labeled.Item.OrderBy(x => new NotComparable(-x), comparer))
{
Assert.InRange(i, prev, count - 1);
prev = i;
}
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderBy_NotPipelined_NotComparable_Comparator(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
var comparer = Comparer<NotComparable>.Create((x, y) => ReverseComparer.Instance.Compare(x.Value, y.Value));
Assert.All(labeled.Item.OrderBy(x => new NotComparable(-x), comparer).ToList(), x => { Assert.InRange(x, prev, count - 1); prev = x; });
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 2 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotComparable(Labeled<ParallelQuery<int>> labeled, int count)
{
_ = count;
ParallelQuery<int> query = labeled.Item.OrderByDescending(x => new NotComparable(x));
AssertThrows.Wrapped<ArgumentException>(() => { foreach (int i in query) ; });
AssertThrows.Wrapped<ArgumentException>(() => query.ToList());
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotComparable_Comparator(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
var comparer = Comparer<NotComparable>.Create((x, y) => ReverseComparer.Instance.Compare(x.Value, y.Value));
foreach (int i in labeled.Item.OrderByDescending(x => new NotComparable(-x), comparer))
{
Assert.InRange(i, 0, prev);
prev = i;
}
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void OrderByDescending_NotPipelined_NotComparable_Comparator(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
var comparer = Comparer<NotComparable>.Create((x, y) => ReverseComparer.Instance.Compare(x.Value, y.Value));
Assert.All(labeled.Item.OrderByDescending(x => new NotComparable(-x), comparer).ToList(), x => { Assert.InRange(x, 0, prev); prev = x; });
}
[Fact]
public static void OrderBy_ArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<int>)null).OrderBy(x => x));
AssertExtensions.Throws<ArgumentNullException>("keySelector", () => ParallelEnumerable.Range(0, 1).OrderBy((Func<int, int>)null));
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<int>)null).OrderBy(x => x, Comparer<int>.Default));
AssertExtensions.Throws<ArgumentNullException>("keySelector", () => ParallelEnumerable.Range(0, 1).OrderBy((Func<int, int>)null, Comparer<int>.Default));
}
[Fact]
public static void OrderByDescending_ArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<int>)null).OrderByDescending(x => x));
AssertExtensions.Throws<ArgumentNullException>("keySelector", () => ParallelEnumerable.Range(0, 1).OrderByDescending((Func<int, int>)null));
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<int>)null).OrderByDescending(x => x, Comparer<int>.Default));
AssertExtensions.Throws<ArgumentNullException>("keySelector", () => ParallelEnumerable.Range(0, 1).OrderByDescending((Func<int, int>)null, Comparer<int>.Default));
}
// Heavily exercises OrderBy in the face of user-delegate exceptions.
// On CTP-M1, this would deadlock for DOP=7,9,11,... on 4-core, but works for DOP=1..6 and 8,10,12, ...
//
// In this test, every call to the key-selector delegate throws.
[ConditionalTheory(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
[MemberData(nameof(OrderByThreadedData), new[] { 1, 2, 16, 128, 1024 }, new[] { 1, 2, 4, 7, 8, 31, 32 })]
public static void OrderBy_ThreadedDeadlock(Labeled<ParallelQuery<int>> labeled, int count, int degree)
{
_ = count;
ParallelQuery<int> query = labeled.Item.WithDegreeOfParallelism(degree).OrderBy<int, int>(x => { throw new DeliberateTestException(); });
AggregateException ae = Assert.Throws<AggregateException>(() => { foreach (int i in query) { } });
Assert.All(ae.InnerExceptions, e => Assert.IsType<DeliberateTestException>(e));
}
// Heavily exercises OrderBy, but only throws one user delegate exception to simulate an occasional failure.
[ConditionalTheory(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
[MemberData(nameof(OrderByThreadedData), new[] { 1, 2, 16, 128, 1024 }, new[] { 1, 2, 4, 7, 8, 31, 32 })]
public static void OrderBy_ThreadedDeadlock_SingleException(Labeled<ParallelQuery<int>> labeled, int count, int degree)
{
int countdown = Math.Min(count / 2, degree) + 1;
ParallelQuery<int> query = labeled.Item.WithDegreeOfParallelism(degree).OrderBy(x => { if (Interlocked.Decrement(ref countdown) == 0) throw new DeliberateTestException(); return x; });
AggregateException ae = Assert.Throws<AggregateException>(() => { foreach (int i in query) { } });
Assert.Single(ae.InnerExceptions);
Assert.All(ae.InnerExceptions, e => Assert.IsType<DeliberateTestException>(e));
}
//
// Thenby
//
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = 0;
int prevSecondary = count - 1;
int seen = 0;
foreach (int i in labeled.Item.OrderBy(x => x % GroupFactor).ThenBy(x => -x))
{
Assert.InRange(i % GroupFactor, prevPrimary, count - 1);
if (i % GroupFactor != prevPrimary)
{
prevPrimary = i % GroupFactor;
prevSecondary = count - 1;
}
Assert.InRange(i, 0, prevSecondary);
prevSecondary = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenBy(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_Reversed(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = GroupFactor - 1;
int prevSecondary = 0;
int seen = 0;
foreach (int i in labeled.Item.OrderBy(x => -x % GroupFactor).ThenBy(x => x))
{
Assert.InRange(i % GroupFactor, 0, prevPrimary);
if (i % GroupFactor != prevPrimary)
{
prevPrimary = i % GroupFactor;
prevSecondary = 0;
}
Assert.InRange(i, prevSecondary, count - 1);
prevSecondary = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_Reversed_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenBy_Reversed(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = GroupFactor - 1;
int prevSecondary = 0;
int seen = 0;
foreach (int i in labeled.Item.OrderByDescending(x => x % GroupFactor).ThenByDescending(x => -x))
{
Assert.InRange(i % GroupFactor, 0, prevPrimary);
if (i % GroupFactor != prevPrimary)
{
prevPrimary = i % GroupFactor;
prevSecondary = 0;
}
Assert.InRange(i, prevSecondary, count - 1);
prevSecondary = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenByDescending(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_Reversed(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = 0;
int prevSecondary = count - 1;
int seen = 0;
foreach (int i in labeled.Item.OrderByDescending(x => -x % GroupFactor).ThenByDescending(x => x))
{
Assert.InRange(i % GroupFactor, prevPrimary, count - 1);
if (i % GroupFactor != prevPrimary)
{
prevPrimary = i % GroupFactor;
prevSecondary = count - 1;
}
Assert.InRange(i, 0, prevSecondary);
prevSecondary = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_Reversed_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenByDescending_Reversed(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = 0;
int prevSecondary = count - 1;
int seen = 0;
Assert.All(labeled.Item.OrderBy(x => x % GroupFactor).ThenBy(x => -x).ToList(),
x =>
{
Assert.InRange(x % GroupFactor, prevPrimary, count - 1);
if (x % GroupFactor != prevPrimary)
{
prevPrimary = x % GroupFactor;
prevSecondary = count - 1;
}
Assert.InRange(x, 0, prevSecondary);
prevSecondary = x;
seen++;
});
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenBy_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_Reversed_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = GroupFactor - 1;
int prevSecondary = 0;
int seen = 0;
Assert.All(labeled.Item.OrderBy(x => -x % GroupFactor).ThenBy(x => x).ToList(),
x =>
{
Assert.InRange(x % GroupFactor, 0, prevPrimary);
if (x % GroupFactor != prevPrimary)
{
prevPrimary = x % GroupFactor;
prevSecondary = 0;
}
Assert.InRange(x, prevSecondary, count - 1);
prevSecondary = x;
seen++;
});
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_Reversed_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenBy_Reversed_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = GroupFactor - 1;
int prevSecondary = 0;
int seen = 0;
Assert.All(labeled.Item.OrderByDescending(x => x % GroupFactor).ThenByDescending(x => -x).ToList(),
x =>
{
Assert.InRange(x % GroupFactor, 0, prevPrimary);
if (x % GroupFactor != prevPrimary)
{
prevPrimary = x % GroupFactor;
prevSecondary = 0;
}
Assert.InRange(x, prevSecondary, count - 1);
prevSecondary = x;
seen++;
});
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenByDescending_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_Reversed_NotPipelined(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = 0;
int prevSecondary = count - 1;
int seen = 0;
Assert.All(labeled.Item.OrderByDescending(x => -x % GroupFactor).ThenByDescending(x => x).ToList(),
x =>
{
Assert.InRange(x % GroupFactor, prevPrimary, count - 1);
if (x % GroupFactor != prevPrimary)
{
prevPrimary = x % GroupFactor;
prevSecondary = count - 1;
}
Assert.InRange(x, 0, prevSecondary);
prevSecondary = x;
seen++;
});
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_Reversed_NotPipelined_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenByDescending_Reversed_NotPipelined(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = 0;
int prevSecondary = count - 1;
int seen = 0;
foreach (int i in labeled.Item.OrderBy(x => x % GroupFactor).ThenBy(x => x, ReverseComparer.Instance))
{
Assert.InRange(i % GroupFactor, prevPrimary, count - 1);
if (i % GroupFactor != prevPrimary)
{
prevPrimary = i % GroupFactor;
prevSecondary = count - 1;
}
Assert.InRange(i, 0, prevSecondary);
prevSecondary = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenBy_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = GroupFactor - 1;
int prevSecondary = 0;
int seen = 0;
foreach (int i in labeled.Item.OrderByDescending(x => x % GroupFactor).ThenByDescending(x => x, ReverseComparer.Instance))
{
Assert.InRange(i % GroupFactor, 0, prevPrimary);
if (i % GroupFactor != prevPrimary)
{
prevPrimary = i % GroupFactor;
prevSecondary = 0;
}
Assert.InRange(i, prevSecondary, count - 1);
prevSecondary = i;
seen++;
}
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenByDescending_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_NotPipelined_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = 0;
int prevSecondary = count - 1;
int seen = 0;
Assert.All(labeled.Item.OrderBy(x => x % GroupFactor).ThenBy(x => x, ReverseComparer.Instance).ToList(),
x =>
{
Assert.InRange(x % GroupFactor, prevPrimary, count - 1);
if (x % GroupFactor != prevPrimary)
{
prevPrimary = x % GroupFactor;
prevSecondary = count - 1;
}
Assert.InRange(x, 0, prevSecondary);
prevSecondary = x;
seen++;
});
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_NotPipelined_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenBy_NotPipelined_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, GroupFactor * 2 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, GroupFactor * 2 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_NotPipelined_CustomComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prevPrimary = GroupFactor - 1;
int prevSecondary = 0;
int seen = 0;
Assert.All(labeled.Item.OrderByDescending(x => x % GroupFactor).ThenByDescending(x => x, ReverseComparer.Instance).ToList(),
x =>
{
Assert.InRange(x % GroupFactor, 0, prevPrimary);
if (x % GroupFactor != prevPrimary)
{
prevPrimary = x % GroupFactor;
prevSecondary = 0;
}
Assert.InRange(x, prevSecondary, count - 1);
prevSecondary = x;
seen++;
});
Assert.Equal(count, seen);
}
[Theory]
[OuterLoop]
[MemberData(nameof(Sources.Ranges), new[] { LongRunningCount }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { LongRunningCount })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { LongRunningCount }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_NotPipelined_CustomComparator_Longrunning(Labeled<ParallelQuery<int>> labeled, int count)
{
ThenByDescending_NotPipelined_CustomComparer(labeled, count);
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
// Regression test for the PLINQ version of https://github.com/dotnet/runtime/issues/14793 - comparer returning max/min value.
public static void ThenBy_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
foreach (int i in labeled.Item.OrderBy(x => 0).ThenBy(x => x, new ExtremeComparer<int>()))
{
Assert.InRange(i, prev, count - 1);
prev = i;
}
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
// Regression test for the PLINQ version of https://github.com/dotnet/runtime/issues/14793 - comparer returning max/min value.
public static void ThenByDescending_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
foreach (int i in labeled.Item.OrderBy(x => 0).ThenByDescending(x => x, new ExtremeComparer<int>()))
{
Assert.InRange(i, 0, prev);
prev = i;
}
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void ThenBy_NotPipelined_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = 0;
Assert.All(labeled.Item.OrderBy(x => 0).ThenBy(x => x, new ExtremeComparer<int>()).ToList(), x => { Assert.InRange(x, prev, count - 1); prev = x; });
}
[Theory]
[MemberData(nameof(Sources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(Sources))]
[MemberData(nameof(OrderByRandomData), new[] { 0, 1, 2, 16 })]
[MemberData(nameof(UnorderedSources.Ranges), new[] { 0, 1, 2, 16 }, MemberType = typeof(UnorderedSources))]
public static void ThenByDescending_NotPipelined_ExtremeComparer(Labeled<ParallelQuery<int>> labeled, int count)
{
int prev = count - 1;
Assert.All(labeled.Item.OrderBy(x => 0).ThenByDescending(x => x, new ExtremeComparer<int>()).ToList(), x => { Assert.InRange(x, 0, prev); prev = x; });
}
// Recursive sort with nested ThenBy...s
// Due to the use of randomized input, cycles will not start with a known input (and may skip values, etc).
[Theory]