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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.
// NOTE: This code is derived from an implementation originally in dotnet/runtime:
// https://github.com/dotnet/runtime/blob/v8.0.3/src/libraries/System.Collections/tests/Generic/List/List.Generic.Tests.ForEach.cs
//
// See the commentary in https://github.com/dotnet/roslyn/pull/50156 for notes on incorporating changes made to the
// reference implementation.
using System;
using Microsoft.CodeAnalysis.Collections;
using Xunit;
namespace Microsoft.CodeAnalysis.UnitTests.Collections
{
/// <summary>
/// Contains tests that ensure the correctness of the List class.
/// </summary>
public abstract partial class SegmentedList_Generic_Tests<T> : IList_Generic_Tests<T>
{
[Theory]
[MemberData(nameof(ValidCollectionSizes))]
public void ForEach_Verify(int count)
{
SegmentedList<T> list = GenericListFactory(count);
SegmentedList<T> visitedItems = new SegmentedList<T>();
Action<T> action = delegate (T item) { visitedItems.Add(item); };
//[] Verify ForEach looks at every item
visitedItems.Clear();
list.ForEach(action);
VerifyList(list, visitedItems);
}
[Fact]
public void ForEach_NullAction_ThrowsArgumentNullException()
{
SegmentedList<T> list = GenericListFactory();
Assert.Throws<ArgumentNullException>(() => list.ForEach(null!));
}
}
}
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