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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.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using System.Threading;
using Xunit;
namespace System.Linq.Parallel.Tests
{
public class MinTests
{
// Get a set of ranges from 0 to each count, with an extra parameter for a minimum where each item is negated (-x).
public static IEnumerable<object[]> MinData(int[] counts)
{
Func<int, int> min = x => 1 - x;
foreach (object[] results in UnorderedSources.Ranges(counts.Cast<int>(), min))
{
yield return results;
}
}
//
// Min
//
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Int(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(0, query.Min());
Assert.Equal(0, query.Select(x => (int?)x).Min());
Assert.Equal(min, query.Min(x => -x));
Assert.Equal(min, query.Min(x => -(int?)x));
}
[Theory]
[OuterLoop]
[MemberData(nameof(MinData), (object)(new int[] { 1024 * 32, 1024 * 1024 }))]
public static void Min_Int_Longrunning(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
Min_Int(labeled, count, min);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Int_SomeNull(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(count / 2, query.Select(x => x >= count / 2 ? (int?)x : null).Min());
Assert.Equal(min, query.Min(x => x >= count / 2 ? -(int?)x : null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Int_AllNull(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Null(query.Select(x => (int?)null).Min());
Assert.Null(query.Min(x => (int?)null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Long(Labeled<ParallelQuery<int>> labeled, int count, long min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(0, query.Select(x => (long)x).Min());
Assert.Equal(0, query.Select(x => (long?)x).Min());
Assert.Equal(min, query.Min(x => -(long)x));
Assert.Equal(min, query.Min(x => -(long?)x));
}
[Theory]
[OuterLoop]
[MemberData(nameof(MinData), (object)(new int[] { 1024 * 32, 1024 * 1024 }))]
public static void Min_Long_Longrunning(Labeled<ParallelQuery<int>> labeled, int count, long min)
{
Min_Long(labeled, count, min);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Long_SomeNull(Labeled<ParallelQuery<int>> labeled, int count, long min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(count / 2, query.Select(x => x >= count / 2 ? (long?)x : null).Min());
Assert.Equal(min, query.Min(x => x >= count / 2 ? -(long?)x : null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Long_AllNull(Labeled<ParallelQuery<int>> labeled, int count, long min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Null(query.Select(x => (long?)null).Min());
Assert.Null(query.Min(x => (long?)null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Float(Labeled<ParallelQuery<int>> labeled, int count, float min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(0, query.Select(x => (float)x).Min());
Assert.Equal(0, query.Select(x => (float?)x).Min());
Assert.Equal(min, query.Min(x => -(float)x));
Assert.Equal(min, query.Min(x => -(float?)x));
Assert.Equal(float.NegativeInfinity, query.Select(x => x == count / 2 ? float.NegativeInfinity : x).Min());
Assert.Equal(float.NegativeInfinity, query.Select(x => x == count / 2 ? (float?)float.NegativeInfinity : x).Min());
Assert.Equal(float.NaN, query.Select(x => x == count / 2 ? float.NaN : x).Min());
Assert.Equal(float.NaN, query.Select(x => x == count / 2 ? (float?)float.NaN : x).Min());
}
[Theory]
[OuterLoop]
[MemberData(nameof(MinData), (object)(new int[] { 1024 * 32, 1024 * 1024 }))]
public static void Min_Float_Longrunning(Labeled<ParallelQuery<int>> labeled, int count, float min)
{
Min_Float(labeled, count, min);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Float_SomeNull(Labeled<ParallelQuery<int>> labeled, int count, float min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(count / 2, query.Select(x => x >= count / 2 ? (float?)x : null).Min());
Assert.Equal(min, query.Min(x => x >= count / 2 ? -(float?)x : null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 3 }))]
public static void Min_Float_Special(Labeled<ParallelQuery<int>> labeled, int count, float min)
{
// Null is defined as 'least' when ordered, but is not the minimum.
Func<int, float?> translate = x =>
x % 3 == 0 ? (float?)null :
x % 3 == 1 ? float.MinValue :
float.NaN;
ParallelQuery<int> query = labeled.Item;
Assert.Equal(float.NaN, query.Select(x => x == count / 2 ? float.NaN : float.MinValue).Min());
Assert.Equal(float.NaN, query.Select(translate).Min());
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Float_AllNull(Labeled<ParallelQuery<int>> labeled, int count, float min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Null(query.Select(x => (float?)null).Min());
Assert.Null(query.Min(x => (float?)null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Double(Labeled<ParallelQuery<int>> labeled, int count, double min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(0, query.Select(x => (double)x).Min());
Assert.Equal(0, query.Select(x => (double?)x).Min());
Assert.Equal(min, query.Min(x => -(double)x));
Assert.Equal(min, query.Min(x => -(double?)x));
Assert.Equal(double.NegativeInfinity, query.Select(x => x == count / 2 ? double.NegativeInfinity : x).Min());
Assert.Equal(double.NegativeInfinity, query.Select(x => x == count / 2 ? (double?)double.NegativeInfinity : x).Min());
Assert.Equal(double.NaN, query.Select(x => x == count / 2 ? double.NaN : x).Min());
Assert.Equal(double.NaN, query.Select(x => x == count / 2 ? (double?)double.NaN : x).Min());
}
[Theory]
[OuterLoop]
[MemberData(nameof(MinData), (object)(new int[] { 1024 * 32, 1024 * 1024 }))]
public static void Min_Double_Longrunning(Labeled<ParallelQuery<int>> labeled, int count, double min)
{
Min_Double(labeled, count, min);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 3 }))]
public static void Min_Double_Special(Labeled<ParallelQuery<int>> labeled, int count, double min)
{
// Null is defined as 'least' when ordered, but is not the minimum.
Func<int, double?> translate = x =>
x % 3 == 0 ? (double?)null :
x % 3 == 1 ? double.MinValue :
double.NaN;
ParallelQuery<int> query = labeled.Item;
Assert.Equal(double.NaN, query.Select(x => x == count / 2 ? double.NaN : double.MinValue).Min());
Assert.Equal(double.NaN, query.Select(translate).Min());
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Double_SomeNull(Labeled<ParallelQuery<int>> labeled, int count, double min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(count / 2, query.Select(x => x >= count / 2 ? (double?)x : null).Min());
Assert.Equal(min, query.Min(x => x >= count / 2 ? -(double?)x : null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Double_AllNull(Labeled<ParallelQuery<int>> labeled, int count, double min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Null(query.Select(x => (double?)null).Min());
Assert.Null(query.Min(x => (double?)null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Decimal(Labeled<ParallelQuery<int>> labeled, int count, decimal min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(0, query.Select(x => (decimal)x).Min());
Assert.Equal(0, query.Select(x => (decimal?)x).Min());
Assert.Equal(min, query.Min(x => -(decimal)x));
Assert.Equal(min, query.Min(x => -(decimal?)x));
}
[Theory]
[OuterLoop]
[MemberData(nameof(MinData), (object)(new int[] { 1024 * 32, 1024 * 1024 }))]
public static void Min_Decimal_Longrunning(Labeled<ParallelQuery<int>> labeled, int count, decimal min)
{
Min_Decimal(labeled, count, min);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Decimal_SomeNull(Labeled<ParallelQuery<int>> labeled, int count, decimal min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(count / 2, query.Select(x => x >= count / 2 ? (decimal?)x : null).Min());
Assert.Equal(min, query.Min(x => x >= count / 2 ? -(decimal?)x : null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Decimal_AllNull(Labeled<ParallelQuery<int>> labeled, int count, decimal min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Null(query.Select(x => (decimal?)null).Min());
Assert.Null(query.Min(x => (decimal?)null));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Other(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(0, query.Select(x => DelgatedComparable.Delegate(x, Comparer<int>.Default)).Min().Value);
Assert.Equal(count - 1, query.Select(x => DelgatedComparable.Delegate(x, ReverseComparer.Instance)).Min().Value);
}
[Theory]
[OuterLoop]
[MemberData(nameof(MinData), (object)(new int[] { 1024 * 32, 1024 * 1024 }))]
public static void Min_Other_Longrunning(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
Min_Other(labeled, count, min);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, }))]
public static void Min_NotComparable(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
NotComparable a = new NotComparable(0);
Assert.Equal(a, labeled.Item.Min(x => a));
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Other_SomeNull(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Equal(count / 2, query.Min(x => x >= count / 2 ? DelgatedComparable.Delegate(x, Comparer<int>.Default) : null).Value);
Assert.Equal(count - 1, query.Min(x => x >= count / 2 ? DelgatedComparable.Delegate(x, ReverseComparer.Instance) : null).Value);
}
[Theory]
[MemberData(nameof(MinData), (object)(new int[] { 1, 2, 16 }))]
public static void Min_Other_AllNull(Labeled<ParallelQuery<int>> labeled, int count, int min)
{
ParallelQuery<int> query = labeled.Item;
Assert.Null(query.Select(x => (string)null).Min());
Assert.Null(query.Min(x => (string)null));
}
[Theory]
[MemberData(nameof(Sources.Ranges), (object)(new int[] { 0 }), MemberType = typeof(UnorderedSources))]
public static void Min_EmptyNullable(Labeled<ParallelQuery<int>> labeled, int count)
{
Assert.Null(labeled.Item.Min(x => (int?)x));
Assert.Null(labeled.Item.Min(x => (long?)x));
Assert.Null(labeled.Item.Min(x => (float?)x));
Assert.Null(labeled.Item.Min(x => (double?)x));
Assert.Null(labeled.Item.Min(x => (decimal?)x));
Assert.Null(labeled.Item.Min(x => new object()));
}
[Theory]
[MemberData(nameof(Sources.Ranges), (object)(new int[] { 0 }), MemberType = typeof(UnorderedSources))]
public static void Min_InvalidOperationException(Labeled<ParallelQuery<int>> labeled, int count)
{
Assert.Throws<InvalidOperationException>(() => labeled.Item.Min());
Assert.Throws<InvalidOperationException>(() => labeled.Item.Min(x => (long)x));
Assert.Throws<InvalidOperationException>(() => labeled.Item.Min(x => (float)x));
Assert.Throws<InvalidOperationException>(() => labeled.Item.Min(x => (double)x));
Assert.Throws<InvalidOperationException>(() => labeled.Item.Min(x => (decimal)x));
Assert.Throws<InvalidOperationException>(() => labeled.Item.Min(x => new NotComparable(x)));
}
[Theory]
[MemberData(nameof(Sources.Ranges), (object)(new int[] { 1 }), MemberType = typeof(UnorderedSources))]
public static void Min_OperationCanceledException_PreCanceled(Labeled<ParallelQuery<int>> labeled, int count)
{
CancellationTokenSource cs = new CancellationTokenSource();
cs.Cancel();
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (int?)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (long)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (long?)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (float)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (float?)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (double)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (double?)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (decimal)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => (decimal?)x));
Functions.AssertIsCanceled(cs, () => labeled.Item.WithCancellation(cs.Token).Min(x => new NotComparable(x)));
}
[Theory]
[MemberData(nameof(Sources.Ranges), (object)(new int[] { 1 }), MemberType = typeof(UnorderedSources))]
public static void Min_AggregateException(Labeled<ParallelQuery<int>> labeled, int count)
{
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, int>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, int?>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, long>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, long?>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, float>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, float?>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, double>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, double?>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, decimal>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, decimal?>)(x => { throw new DeliberateTestException(); })));
Functions.AssertThrowsWrapped<DeliberateTestException>(() => labeled.Item.Min((Func<int, NotComparable>)(x => { throw new DeliberateTestException(); })));
}
[Theory]
[MemberData(nameof(Sources.Ranges), (object)(new int[] { 2 }), MemberType = typeof(UnorderedSources))]
public static void Min_AggregateException_NotComparable(Labeled<ParallelQuery<int>> labeled, int count)
{
Functions.AssertThrowsWrapped<ArgumentException>(() => labeled.Item.Min(x => new NotComparable(x)));
}
[Fact]
public static void Min_ArgumentNullException()
{
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<int>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Range(0, 1).Min((Func<int, int>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<int?>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((int?)0, 1).Min((Func<int?, int?>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<long>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((long)0, 1).Min((Func<long, long>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<long?>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((long?)0, 1).Min((Func<long?, long?>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<float>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((float)0, 1).Min((Func<float, float>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<float?>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((float?)0, 1).Min((Func<float?, float>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<double>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((double)0, 1).Min((Func<double, double>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<double?>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((double?)0, 1).Min((Func<double?, double>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<decimal>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((decimal)0, 1).Min((Func<decimal, decimal>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<decimal?>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat((decimal?)0, 1).Min((Func<decimal?, decimal>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<NotComparable>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat(0, 1).Min((Func<int, NotComparable>)null));
Assert.Throws<ArgumentNullException>(() => ((ParallelQuery<object>)null).Min());
Assert.Throws<ArgumentNullException>(() => ParallelEnumerable.Repeat(new object(), 1).Min((Func<object, object>)null));
}
}
}
|
