Custom list types added to force the desired interfaces.

README.md

@@ -2,6 +2,10 @@
 `Recyclable.Collections.TestData` project is a basic open source package for containing test data useful for testing collections like `RecyclableList<T>`, `RecyclableLongList<T>`, `List<T>`, `SortableList<T>`, `PriorityQueue<T>` & similar.
 
 ## Included
-* `EnmerableWithoutCount<T>`
+* `CustomICollection<T>` with `ICollection` interface
+* `CustomICollectionT<T>` with `ICollection<T>` interface
+* `CustomIList<T>` with `IList` interface
+* `CustomIListT<T>` with `IList<T>` interface
+* `CustomIReadOnlyList<T>` with `IReadOnlyList<T>` interface
+* `EnmerableWithoutCount<T>` with `IEnumerable` & `IEnumerable<T>` interfaces
 * `RecyclableLongListTestData`
-* `CustomIList`

Recyclable.Collections.TestData/CustomICollection.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+
+namespace Recyclable.Collections.TestData
+{
+	public class CustomICollection<T> : ICollection, IEnumerable<T>
+	{
+		private readonly T[] _testData;
+
+		public CustomICollection(in T[] testData)
+		{
+			_testData = testData;
+		}
+
+		public int Count => _testData.Length;
+		public bool IsSynchronized => true;
+		public object SyncRoot => _testData;
+
+		public void CopyTo(Array array, int index) => _testData.CopyTo((T[])array, index);
+
+		public IEnumerator GetEnumerator() => _testData.GetEnumerator();
+
+		IEnumerator<T> IEnumerable<T>.GetEnumerator() => ((IEnumerable<T>)_testData).GetEnumerator();
+	}
+}

Recyclable.Collections.TestData/CustomICollectionT.cs

@@ -0,0 +1,31 @@
+using System.Collections;
+
+namespace Recyclable.Collections.TestData
+{
+	public class CustomICollectionT<T> : ICollection<T>, IEnumerable<T>
+	{
+		private readonly List<T> _testData;
+
+		public CustomICollectionT(in List<T> testData)
+		{
+			_testData = testData;
+		}
+
+		public int Count => _testData.Count;
+		public bool IsReadOnly => false;
+
+		public void Add(T item) => _testData.Add(item);
+
+		public void Clear() => _testData.Clear();
+
+		public bool Contains(T item) => _testData.Contains(item);
+
+		public void CopyTo(T[] array, int arrayIndex) => _testData.CopyTo(array, arrayIndex);
+
+		public IEnumerator<T> GetEnumerator() => _testData.GetEnumerator();
+
+		public bool Remove(T item) => _testData.Remove(item);
+
+		IEnumerator IEnumerable.GetEnumerator() => _testData.GetEnumerator();
+	}
+}

Recyclable.Collections.TestData/CustomIList.cs

@@ -2,7 +2,7 @@
 
 namespace Recyclable.Collections.TestData
 {
-	public class CustomIList<T> : IList<T>
+	public class CustomIList<T> : IList, IEnumerable<T>
 	{
 		protected List<T> _list;
 
@@ -16,18 +16,51 @@ namespace Recyclable.Collections.TestData
 			_list = new List<T>(items);
 		}
 
-		public T this[int index] { get => _list[index]; set => _list[index] = value; }
-		public int Count => _list.Count;
-		public bool IsReadOnly => false;
-		public void Add(T item) => _list.Add(item);
-		public void Clear() => _list.Clear();
-		public bool Contains(T item) => _list.Contains(item);
-		public void CopyTo(T[] array, int arrayIndex) => _list.CopyTo(0, array, arrayIndex, _list.Count);
-		public IEnumerator<T> GetEnumerator() => _list.GetEnumerator();
-		public int IndexOf(T item) => _list.IndexOf(item);
-		public void Insert(int index, T item) => _list.Insert(index, item);
-		public bool Remove(T item) => _list.Remove(item);
-		public void RemoveAt(int index) => _list.RemoveAt(index);
-		IEnumerator IEnumerable.GetEnumerator() => _list.GetEnumerator();
+		public object? this[int index] { get => ((IList)_list)[index]; set => ((IList)_list)[index] = value; }
+
+		public bool IsFixedSize => ((IList)_list).IsFixedSize;
+
+		public bool IsReadOnly => ((IList)_list).IsReadOnly;
+
+		public int Count => ((ICollection)_list).Count;
+
+		public bool IsSynchronized => ((ICollection)_list).IsSynchronized;
+
+		public object SyncRoot => ((ICollection)_list).SyncRoot;
+
+		public int Add(object? value) => ((IList)_list).Add(value);
+
+		public void Clear()
+		{
+			((IList)_list).Clear();
+		}
+
+		public bool Contains(object? value) => ((IList)_list).Contains(value);
+
+		public void CopyTo(Array array, int index)
+		{
+			((ICollection)_list).CopyTo(array, index);
+		}
+
+		public IEnumerator GetEnumerator() => ((IEnumerable)_list).GetEnumerator();
+
+		public int IndexOf(object? value) => ((IList)_list).IndexOf(value);
+
+		public void Insert(int index, object? value)
+		{
+			((IList)_list).Insert(index, value);
+		}
+
+		public void Remove(object? value)
+		{
+			((IList)_list).Remove(value);
+		}
+
+		public void RemoveAt(int index)
+		{
+			((IList)_list).RemoveAt(index);
+		}
+
+		IEnumerator<T> IEnumerable<T>.GetEnumerator() => ((IEnumerable<T>)_list).GetEnumerator();
 	}
 }

Recyclable.Collections.TestData/CustomIListT.cs

@@ -0,0 +1,33 @@
+using System.Collections;
+
+namespace Recyclable.Collections.TestData
+{
+	public class CustomIListT<T> : IList<T>, IEnumerable<T>
+	{
+		protected List<T> _list;
+
+		public CustomIListT()
+		{
+			_list = new List<T>();
+		}
+
+		public CustomIListT(IEnumerable<T> items)
+		{
+			_list = new List<T>(items);
+		}
+
+		public T this[int index] { get => _list[index]; set => _list[index] = value; }
+		public int Count => _list.Count;
+		public bool IsReadOnly => false;
+		public void Add(T item) => _list.Add(item);
+		public void Clear() => _list.Clear();
+		public bool Contains(T item) => _list.Contains(item);
+		public void CopyTo(T[] array, int arrayIndex) => _list.CopyTo(0, array, arrayIndex, _list.Count);
+		public IEnumerator<T> GetEnumerator() => _list.GetEnumerator();
+		public int IndexOf(T item) => _list.IndexOf(item);
+		public void Insert(int index, T item) => _list.Insert(index, item);
+		public bool Remove(T item) => _list.Remove(item);
+		public void RemoveAt(int index) => _list.RemoveAt(index);
+		IEnumerator IEnumerable.GetEnumerator() => _list.GetEnumerator();
+	}
+}

Recyclable.Collections.TestData/CustomIReadOnlyList.cs

@@ -0,0 +1,22 @@
+using System.Collections;
+
+namespace Recyclable.Collections.TestData
+{
+	public class CustomIReadOnlyList<T> : IReadOnlyList<T>
+	{
+		private readonly T[] _testData;
+
+		public CustomIReadOnlyList(T[] testData)
+		{
+			_testData = testData;
+		}
+
+		public T this[int index] => _testData[index];
+
+		public int Count => _testData.Length;
+
+		public IEnumerator<T> GetEnumerator() => _testData.AsEnumerable().GetEnumerator();
+
+		IEnumerator IEnumerable.GetEnumerator() => _testData.GetEnumerator();
+	}
+}

Recyclable.Collections.TestData/EnumerableWithoutCount.cs

@@ -2,7 +2,7 @@
 
 namespace Recyclable.Collections.TestData
 {
-	public class EnumerableWithoutCount<T> : IEnumerable<T>
+	public class EnumerableWithoutCount<T> : IEnumerable, IEnumerable<T>
 	{
 		private readonly IEnumerable<T> _testData;
 
@@ -11,7 +11,8 @@ namespace Recyclable.Collections.TestData
 			_testData = testData;
 		}
 
-		public IEnumerator<T> GetEnumerator() => _testData.GetEnumerator();
-		IEnumerator IEnumerable.GetEnumerator() => _testData.GetEnumerator();
+		public IEnumerator GetEnumerator() => _testData.GetEnumerator();
+
+		IEnumerator<T> IEnumerable<T>.GetEnumerator() => _testData.GetEnumerator();
 	}
 }

Recyclable.Collections.TestData/Recyclable.Collections.TestData.csproj

@@ -7,7 +7,7 @@
 		<OutputType>Library</OutputType>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<PackageId>Recyclable.Collections.TestData</PackageId>
-		<PackageVersion>0.0.2</PackageVersion>
+		<PackageVersion>0.0.3</PackageVersion>
 		<Authors>Marek Lemańczyk</Authors>
 		<Company>N/A</Company>
 		<Product>Recyclable.Collections.TestData</Product>
@@ -19,7 +19,7 @@
 		<PackageLicenseFile>LICENSE.md</PackageLicenseFile>
 		<PackageReadmeFile>README.md</PackageReadmeFile>
 		<RepositoryType>git</RepositoryType>
-		<PackageReleaseNotes>Initial version extracted from `Recyclable.Collections`</PackageReleaseNotes>
+		<PackageReleaseNotes>Custom collection types added to force desired interfaces.</PackageReleaseNotes>
 		<Platforms>AnyCPU;x64</Platforms>
 		<PackageIcon>logo.png</PackageIcon>
 	</PropertyGroup>

Recyclable.Collections.TestData/RecyclableLongListTestData.cs

@@ -84,12 +84,13 @@ namespace Recyclable.Collections.TestData
 					long[] testData = CreateTestData(itemsCount).ToArray();
 
 					yield return new object[] { $"Array[{itemsCount}]", testData, itemsCount };
-					yield return new object[] { $"ICollection[{itemsCount}]", testData, itemsCount };
-					yield return new object[] { $"ICollection<T>[{itemsCount}]", testData, itemsCount };
-					yield return new object[] { $"IEnumerable[{itemsCount}]", testData, itemsCount };
+					yield return new object[] { $"ICollection[{itemsCount}]", new CustomICollection<long>(testData), itemsCount };
+					yield return new object[] { $"ICollection<T>[{itemsCount}]", new CustomICollectionT<long>(testData.ToList()), itemsCount };
+					yield return new object[] { $"IEnumerable[{itemsCount}]", new EnumerableWithoutCount<long>(testData), itemsCount };
 					yield return new object[] { $"IEnumerable<T>[{itemsCount}] without non-enumerated count", new EnumerableWithoutCount<long>(testData), itemsCount };
-					yield return new object[] { $"IList<T>[{itemsCount}]", new CustomIList<long>(testData), itemsCount };
-					yield return new object[] { $"IReadOnlyList<T>[{itemsCount}])", testData, itemsCount };
+					yield return new object[] { $"IList[{itemsCount}]", new CustomIList<long>(testData), itemsCount };
+					yield return new object[] { $"IList<T>[{itemsCount}]", new CustomIListT<long>(testData), itemsCount };
+					yield return new object[] { $"IReadOnlyList<T>[{itemsCount}])", new CustomIReadOnlyList<long>(testData), itemsCount };
 					yield return new object[] { $"List<T>[{itemsCount}]", testData.ToList(), itemsCount };
 					yield return new object[] { $"ReadOnlySpan<T>[{itemsCount}]", testData, itemsCount };
 					yield return new object[] { $"RecyclableList<T>[{itemsCount}]", testData.ToRecyclableList(), itemsCount };
@@ -114,15 +115,16 @@ namespace Recyclable.Collections.TestData
 					break;
 
 				case true:
-					IEnumerable<object> testRefData = CreateRefTestData(itemsCount).ToArray();
+					object[] testRefData = CreateRefTestData(itemsCount).ToArray();
 
 					yield return new object[] { $"Array[{itemsCount}]", testRefData, itemsCount };
-					yield return new object[] { $"ICollection(itemsCount: {itemsCount}", testRefData, itemsCount };
-					yield return new object[] { $"ICollection<T>(itemsCount: {itemsCount}", testRefData, itemsCount };
-					yield return new object[] { $"IEnumerable(itemsCount: {itemsCount})", testRefData, itemsCount };
+					yield return new object[] { $"ICollection(itemsCount: {itemsCount}", new CustomICollection<object>(testRefData), itemsCount };
+					yield return new object[] { $"ICollection<T>(itemsCount: {itemsCount}", new CustomICollectionT<object>(testRefData.ToList()), itemsCount };
+					yield return new object[] { $"IEnumerable(itemsCount: {itemsCount})", new EnumerableWithoutCount<object>(testRefData), itemsCount };
 					yield return new object[] { $"IEnumerable<T>(itemsCount: {itemsCount}) without non-enumerated count", new EnumerableWithoutCount<object>(testRefData), itemsCount };
-					yield return new object[] { $"IList<T>(itemsCount: {itemsCount})", new CustomIList<object>(testRefData), itemsCount };
-					yield return new object[] { $"IReadOnlyList<T>(itemsCount: {itemsCount})", testRefData, itemsCount };
+					yield return new object[] { $"IList(itemsCount: {itemsCount})", new CustomIList<object>(testRefData), itemsCount };
+					yield return new object[] { $"IList<T>(itemsCount: {itemsCount})", new CustomIListT<object>(testRefData), itemsCount };
+					yield return new object[] { $"IReadOnlyList<T>(itemsCount: {itemsCount})", new CustomIReadOnlyList<object>(testRefData), itemsCount };
 					yield return new object[] { $"List<T>(itemsCount: {itemsCount}", testRefData.ToList(), itemsCount };
 					yield return new object[] { $"ReadOnlySpan<T>[{itemsCount}]", testRefData, itemsCount };
 					yield return new object[] { $"RecyclableList<T>(itemsCount: {itemsCount})", testRefData.ToRecyclableList(), itemsCount };
@@ -191,11 +193,11 @@ namespace Recyclable.Collections.TestData
 		public static IEnumerable<object[]> SourceRefDataVariants => CreateSourceDataVariants(true);
 		public static IEnumerable<object[]> SourceRefDataWithBlockSizeVariants { get; } = CombineSourceDataWithBlockSize(SourceRefDataVariants);
 
-		private static IEnumerable<long> _initialItemIndexVariants => new long[] { 0, 1, 2, 3, 4, 5 };
+		private static IEnumerable<long> InitialItemIndexVariants => new long[] { 0, 1, 2, 3, 4, 5 };
 		private static IEnumerable<long> CreateItemIndexVariants(long itemsCount, int blockSize)
 		{
-			IEnumerable<long>  primes = _initialItemIndexVariants.Concat(
-				_initialItemIndexVariants.SelectMany(index => new long[] { blockSize - index, blockSize + index })
+			IEnumerable<long>  primes = InitialItemIndexVariants.Concat(
+				InitialItemIndexVariants.SelectMany(index => new long[] { blockSize - index, blockSize + index })
 				//new long[] { blockSize - 3, blockSize - 2, blockSize - 1, blockSize, blockSize + 1, blockSize + 2, blockSize + 3 }
 			).ToArray();