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Add ICollection.AddRange and ICollection.RemoveRange extension methods #39

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Merged
Tyrrrz merged 4 commits into from
Apr 17, 2026
Merged

Add ICollection.AddRange and ICollection.RemoveRange extension methods #39

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654397e
Add ICollection.AddRange and ICollection.RemoveRange extension method…
Copilot Apr 17, 2026
e616598
Update PowerKit/Extensions/CollectionExtensions.cs
Tyrrrz Apr 17, 2026
e30957f
Update PowerKit/Extensions/CollectionExtensions.cs
Tyrrrz Apr 17, 2026
63d8ea6
Add self-referential regression tests for AddRange and RemoveRange
Copilot Apr 17, 2026
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52 changes: 52 additions & 0 deletions PowerKit.Tests/CollectionExtensionsTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,58 @@ namespace PowerKit.Tests;

public class CollectionExtensionsTests
{
[Fact]
public void AddRange_Test()
{
// Arrange
var collection = (ICollection<int>)new List<int> { 1, 2, 3 };

// Act
collection.AddRange([4, 5, 6]);

// Assert
collection.Should().Equal(1, 2, 3, 4, 5, 6);
}

[Fact]
public void AddRange_SameCollection_Test()
{
// Arrange
var collection = (ICollection<int>)new List<int> { 1, 2, 3 };

// Act
collection.AddRange(collection);

// Assert
collection.Should().Equal(1, 2, 3, 1, 2, 3);
}

[Fact]
public void RemoveRange_Test()
{
// Arrange
var collection = (ICollection<int>)new List<int> { 1, 2, 3, 4, 5 };

// Act
collection.RemoveRange([2, 4]);

// Assert
collection.Should().Equal(1, 3, 5);
}
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[Fact]
public void RemoveRange_SameCollection_Test()
{
// Arrange
var collection = (ICollection<int>)new List<int> { 1, 2, 3, 4, 5 };

// Act
collection.RemoveRange(collection);

// Assert
collection.Should().BeEmpty();
}

[Fact]
public void RemoveAll_Test()
{
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18 changes: 18 additions & 0 deletions PowerKit/Extensions/CollectionExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,24 @@ internal static class CollectionExtensions
{
extension<T>(ICollection<T> source)
{
/// <summary>
/// Adds all elements from the specified sequence to the collection.
/// </summary>
public void AddRange(IEnumerable<T> items)
{
foreach (var item in items.ToArray())
source.Add(item);
}

/// <summary>
/// Removes all elements in the specified sequence from the collection.
/// </summary>
public void RemoveRange(IEnumerable<T> items)
{
foreach (var item in items.ToArray())
source.Remove(item);
}

/// <summary>
/// Removes all elements from the collection that match the specified predicate.
/// </summary>
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