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CountLongCountTests.cs
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CountLongCountTests.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.Generic;
using Xunit;
namespace System.Linq.Parallel.Tests
{
public static class CountLongCountTests
{
public static IEnumerable<object[]> OnlyOneData(int[] counts)
{
foreach (int count in counts.DefaultIfEmpty(Sources.OuterLoopCount))
{
foreach (int position in new[] { 0, count / 2, Math.Max(0, count - 1) }.Distinct())
{
yield return new object[] { count, position };
}
}
}
//
// Count and LongCount
//
[Theory]
[InlineData(0)]
[InlineData(1)]
[InlineData(2)]
[InlineData(16)]
public static void Count_All(int count)
{
Assert.Equal(count, ParallelEnumerable.Range(0, count).Count());
Assert.Equal(count, ParallelEnumerable.Range(0, count).Count(i => i < count));
}
[Fact]
[OuterLoop]
public static void Count_All_Longrunning()
{
Count_All(Sources.OuterLoopCount);
}
[Theory]
[InlineData(0)]
[InlineData(1)]
[InlineData(2)]
[InlineData(16)]
public static void LongCount_All(int count)
{
Assert.Equal(count, ParallelEnumerable.Range(0, count).LongCount());
Assert.Equal(count, ParallelEnumerable.Range(0, count).LongCount(i => i < count));
}
[Fact]
[OuterLoop]
public static void LongCount_All_Longrunning()
{
LongCount_All(Sources.OuterLoopCount);
}
[Theory]
[InlineData(0)]
[InlineData(1)]
[InlineData(2)]
[InlineData(16)]
public static void Count_None(int count)
{
Assert.Equal(0, ParallelEnumerable.Range(0, count).Count(i => i == -1));
}
[Fact]
[OuterLoop]
public static void Count_None_Longrunning()
{
Count_None(Sources.OuterLoopCount);
}
[Theory]
[InlineData(0)]
[InlineData(1)]
[InlineData(2)]
[InlineData(16)]
public static void LongCount_None(int count)
{
Assert.Equal(0, ParallelEnumerable.Range(0, count).LongCount(i => i == -1));
}
[Fact]
[OuterLoop]
public static void LongCount_None_Longrunning()
{
LongCount_None(Sources.OuterLoopCount);
}
[Theory]
[MemberData(nameof(OnlyOneData), new[] { 0, 1, 2, 16 })]
public static void Count_One(int count, int position)
{
Assert.Equal(Math.Min(1, count), ParallelEnumerable.Range(0, count).Count(i => i == position));
}
[Theory]
[OuterLoop]
[MemberData(nameof(OnlyOneData), new int[] { /* Sources.OuterLoopCount */ })]
public static void Count_One_Longrunning(int count, int position)
{
Count_One(count, position);
}
[Theory]
[MemberData(nameof(OnlyOneData), new[] { 0, 1, 2, 16 })]
public static void LongCount_One(int count, long position)
{
Assert.Equal(Math.Min(1, count), ParallelEnumerable.Range(0, count).LongCount(i => i == position));
}
[Theory]
[OuterLoop]
[MemberData(nameof(OnlyOneData), new int[] { /* Sources.OuterLoopCount */ })]
public static void LongCount_One_Longrunning(int count, long position)
{
LongCount_One(count, position);
}
[Fact]
public static void Count_OperationCanceledException()
{
AssertThrows.EventuallyCanceled((source, canceler) => source.Count(x => { canceler(); return true; }));
AssertThrows.EventuallyCanceled((source, canceler) => source.LongCount(x => { canceler(); return true; }));
}
[Fact]
public static void Count_AggregateException_Wraps_OperationCanceledException()
{
AssertThrows.OtherTokenCanceled((source, canceler) => source.Count(x => { canceler(); return true; }));
AssertThrows.OtherTokenCanceled((source, canceler) => source.LongCount(x => { canceler(); return true; }));
AssertThrows.SameTokenNotCanceled((source, canceler) => source.Count(x => { canceler(); return true; }));
AssertThrows.SameTokenNotCanceled((source, canceler) => source.LongCount(x => { canceler(); return true; }));
}
[Fact]
public static void CountLongCount_OperationCanceledException_PreCanceled()
{
AssertThrows.AlreadyCanceled(source => source.Count());
AssertThrows.AlreadyCanceled(source => source.Count(x => true));
AssertThrows.AlreadyCanceled(source => source.LongCount());
AssertThrows.AlreadyCanceled(source => source.LongCount(x => true));
}
[Fact]
public static void CountLongCount_AggregateException()
{
AssertThrows.Wrapped<DeliberateTestException>(() => ParallelEnumerable.Range(0, 1).Count(x => { throw new DeliberateTestException(); }));
AssertThrows.Wrapped<DeliberateTestException>(() => ParallelEnumerable.Range(0, 1).LongCount(x => { throw new DeliberateTestException(); }));
}
[Fact]
public static void CountLongCount_ArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<bool>)null).Count());
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<bool>)null).Count(x => x));
AssertExtensions.Throws<ArgumentNullException>("predicate", () => ParallelEnumerable.Empty<bool>().Count(null));
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<bool>)null).LongCount());
AssertExtensions.Throws<ArgumentNullException>("source", () => ((ParallelQuery<bool>)null).LongCount(x => x));
AssertExtensions.Throws<ArgumentNullException>("predicate", () => ParallelEnumerable.Empty<bool>().LongCount(null));
}
}
}