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ArrayListTests.cs
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ArrayListTests.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 System.Diagnostics;
using System.Reflection;
using System.Threading.Tasks;
using Xunit;
namespace System.Collections.Tests
{
public static class ArrayListTests
{
[Fact]
public static void Ctor_Empty()
{
var arrList = new ArrayList();
Assert.Equal(0, arrList.Count);
Assert.Equal(0, arrList.Capacity);
Assert.False(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Theory]
[InlineData(16)]
[InlineData(0)]
public static void Ctor_Int(int capacity)
{
var arrList = new ArrayList(capacity);
Assert.Equal(capacity, arrList.Capacity);
Assert.False(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void Ctor_Int_NegativeCapacity_ThrowsArgumentOutOfRangeException()
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("capacity", () => new ArrayList(-1)); // Capacity < 0
}
[Fact]
public static void Ctor_ICollection()
{
ArrayList sourceList = Helpers.CreateIntArrayList(100);
var arrList = new ArrayList(sourceList);
Assert.Equal(sourceList.Count, arrList.Count);
for (int i = 0; i < arrList.Count; i++)
{
Assert.Equal(sourceList[i], arrList[i]);
}
Assert.False(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void Ctor_ICollection_Empty()
{
ICollection arrListCollection = new ArrayList();
ArrayList arrList = new ArrayList(arrListCollection);
Assert.Equal(0, arrList.Count);
Assert.False(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void Ctor_ICollection_NullCollection_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("c", () => new ArrayList(null)); // Collection is null
}
[Fact]
public static void DebuggerAttribute()
{
DebuggerAttributes.ValidateDebuggerDisplayReferences(new ArrayList());
DebuggerAttributes.ValidateDebuggerTypeProxyProperties(new ArrayList() { "a", 1, "b", 2 });
bool threwNull = false;
try
{
DebuggerAttributes.ValidateDebuggerTypeProxyProperties(typeof(ArrayList), null);
}
catch (TargetInvocationException ex)
{
threwNull = ex.InnerException is ArgumentNullException;
}
Assert.True(threwNull);
}
[Fact]
public static void Adapter_ArrayList()
{
ArrayList arrList = ArrayList.Adapter(new ArrayList());
Assert.False(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void Adapter_FixedSizeArrayList()
{
ArrayList arrList = ArrayList.Adapter(ArrayList.FixedSize(new ArrayList()));
Assert.True(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void Adapter_ReadOnlyArrayList()
{
ArrayList arrList = ArrayList.Adapter(ArrayList.ReadOnly(new ArrayList()));
Assert.True(arrList.IsFixedSize);
Assert.True(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void Adapter_SynchronizedArrayList()
{
ArrayList arrList = ArrayList.Adapter(ArrayList.Synchronized(new ArrayList()));
Assert.False(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.True(arrList.IsSynchronized);
}
[Fact]
public static void Adapter_PopulateChangesToList()
{
const string FromBefore = " from before";
// Make sure changes through listAdapter show up in list
ArrayList arrList = Helpers.CreateStringArrayList(count: 10, optionalString: FromBefore);
ArrayList adapter = ArrayList.Adapter(arrList);
adapter.Reverse(0, adapter.Count);
int j = 9;
for (int i = 0; i < adapter.Count; i++)
{
Assert.Equal(j.ToString() + FromBefore, adapter[i]);
j--;
}
}
[Fact]
public static void Adapter_ClearList()
{
// Make sure changes through list show up in listAdapter
ArrayList arrList = Helpers.CreateIntArrayList(100);
ArrayList adapter = ArrayList.Adapter(arrList);
arrList.Clear();
Assert.Equal(0, adapter.Count);
}
[Fact]
public static void Adapter_Enumerators()
{
// Test to see if enumerators are correctly enumerate through elements
ArrayList arrList = Helpers.CreateIntArrayList(10);
IEnumerator enumeratorBasic = arrList.GetEnumerator();
ArrayList adapter = ArrayList.Adapter(arrList);
IEnumerator enumeratorWrapped = arrList.GetEnumerator();
int j = 0;
while (enumeratorBasic.MoveNext())
{
Assert.Equal(j, enumeratorBasic.Current);
j++;
}
j = 0;
while (enumeratorWrapped.MoveNext())
{
Assert.Equal(j, enumeratorWrapped.Current);
j++;
}
}
[Fact]
public static void Adapter_EnumeratorsModifiedList()
{
// Test to see if enumerators are correctly getting invalidated with list modified through list
ArrayList arrList = Helpers.CreateIntArrayList(10);
IEnumerator enumeratorBasic = arrList.GetEnumerator();
ArrayList adapter = ArrayList.Adapter(arrList);
IEnumerator numeratorWrapped = arrList.GetEnumerator();
enumeratorBasic.MoveNext();
numeratorWrapped.MoveNext();
// Now modify list through arrList
arrList.Add(100);
// Make sure accessing enumeratorBasic and enuemratorWrapped throws
Assert.Throws<InvalidOperationException>(() => enumeratorBasic.MoveNext());
Assert.Throws<InvalidOperationException>(() => numeratorWrapped.MoveNext());
}
[Fact]
public static void Adapter_EnumeratorsModifiedAdapter()
{
// Test to see if enumerators are correctly getting invalidated with list modified through listAdapter
ArrayList arrList = Helpers.CreateStringArrayList(10);
IEnumerator enumeratorBasic = arrList.GetEnumerator();
ArrayList adapter = ArrayList.Adapter(arrList);
IEnumerator enumeratorWrapped = arrList.GetEnumerator();
enumeratorBasic.MoveNext();
enumeratorWrapped.MoveNext();
// Now modify list through adapter
adapter.Add("Hey this is new element");
// Make sure accessing enumeratorBasic and enuemratorWrapped throws
Assert.Throws<InvalidOperationException>(() => enumeratorBasic.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumeratorWrapped.MoveNext());
}
[Fact]
public static void Adapter_InsertRange()
{
// Test to see if listAdaptor modified using InsertRange works
// Populate the list
ArrayList arrList = Helpers.CreateIntArrayList(10);
ArrayList adapter = ArrayList.Adapter(arrList);
// Now add a few more elements using InsertRange
ArrayList arrListSecond = Helpers.CreateIntArrayList(10);
adapter.InsertRange(adapter.Count, arrListSecond);
Assert.Equal(20, adapter.Count);
}
[Fact]
public static void Adapter_Capacity_Set()
{
ArrayList arrList = Helpers.CreateIntArrayList(10);
ArrayList adapter = ArrayList.Adapter(arrList);
adapter.Capacity = 10;
Assert.Equal(10, adapter.Capacity);
}
[Fact]
public static void Adapter_NullList_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("list", () => ArrayList.Adapter(null)); // List is null
}
[Fact]
public static void AddRange_Basic()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
ArrayList arrList2 = Helpers.CreateIntArrayList(20, 10);
VerifyAddRange(arrList1, arrList2);
}
[Fact]
public static void AddRange_DifferentCollection()
{
ArrayList arrList = Helpers.CreateIntArrayList(10);
Queue queue = new Queue();
for (int i = 10; i < 20; i++)
{
queue.Enqueue(i);
}
VerifyAddRange(arrList, queue);
}
[Fact]
public static void AddRange_Self()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
arrList2.AddRange(arrList2);
for (int i = 0; i < arrList2.Count / 2; i++)
{
Assert.Equal(i, arrList2[i]);
}
for (int i = arrList2.Count / 2; i < arrList2.Count; i++)
{
Assert.Equal(i - arrList2.Count / 2, arrList2[i]);
}
});
}
private static void VerifyAddRange(ArrayList arrList1, ICollection c)
{
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
int expectedCount = arrList2.Count + c.Count;
arrList2.AddRange(c);
Assert.Equal(expectedCount, arrList2.Count);
for (int i = 0; i < arrList2.Count; i++)
{
Assert.Equal(i, arrList2[i]);
}
// Assumes that the array list and collection contain integer types
// and the first item in the collection is the count of the array list
for (int i = arrList2.Count; i < c.Count; i++)
{
Assert.Equal(i, arrList2[i]);
}
});
}
[Fact]
public static void AddRange_DifferentObjectTypes()
{
// Add an ICollection with different type objects
ArrayList arrList1 = Helpers.CreateIntArrayList(10); // Array list contains only integers currently
var queue = new Queue(); // Queue contains strings
for (int i = 10; i < 20; i++)
queue.Enqueue("String_" + i);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
arrList2.AddRange(queue);
for (int i = 0; i < 10; i++)
{
Assert.Equal(i, arrList2[i]);
}
for (int i = 10; i < 20; i++)
{
Assert.Equal("String_" + i, arrList2[i]);
}
});
}
[Fact]
public static void AddRange_EmptyCollection()
{
var emptyCollection = new Queue();
ArrayList arrList1 = Helpers.CreateIntArrayList(100);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
arrList2.AddRange(emptyCollection);
Assert.Equal(100, arrList2.Count);
});
}
[Fact]
public static void AddRange_NullCollection_ThrowsArgumentNullException()
{
var arrList1 = new ArrayList();
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
AssertExtensions.Throws<ArgumentNullException>("c", () => arrList2.AddRange(null)); // Collection is null
});
}
[Theory]
[InlineData(1)]
[InlineData(10)]
[InlineData(100)]
public static void Add_SmallCapacity(int count)
{
ArrayList arrList1 = new ArrayList(1);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
for (int i = 0; i < count; i++)
{
arrList2.Add(i);
Assert.Equal(i, arrList2[i]);
Assert.Equal(i + 1, arrList2.Count);
Assert.True(arrList2.Capacity >= arrList2.Count);
}
Assert.Equal(count, arrList2.Count);
for (int i = 0; i < count; i++)
{
arrList2.RemoveAt(0);
}
Assert.Equal(0, arrList2.Count);
});
}
[Fact]
public static void BinarySearch_Basic()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
foreach (object value in arrList2)
{
int ndx = arrList2.BinarySearch(value);
Assert.Equal(arrList2[ndx], value);
}
});
}
[Fact]
public static void BinarySearch_Basic_NotFoundReturnsNextElementIndex()
{
// The zero-based index of the value in the sorted ArrayList, if value is found; otherwise, a negative number,
// which is the bitwise complement of the index of the next element.
ArrayList arrList1 = Helpers.CreateIntArrayList(100);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
Assert.Equal(100, ~arrList2.BinarySearch(150));
// Searching for null items should return -1.
Assert.Equal(-1, arrList2.BinarySearch(null));
});
}
[Fact]
public static void BinarySearch_Basic_NullObject()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(100);
arrList1.Add(null);
arrList1.Sort();
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
Assert.Equal(0, arrList2.BinarySearch(null));
});
}
[Fact]
public static void BinarySearch_Basic_DuplicateResults()
{
// If we have duplicate results, return the first.
var arrList1 = new ArrayList();
for (int i = 0; i < 100; i++)
arrList1.Add(5);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
// Remember, this is BinarySearch.
Assert.Equal(49, arrList2.BinarySearch(5));
});
}
[Fact]
public static void BinarySearch_IComparer()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
foreach (object value in arrList1)
{
int ndx = arrList2.BinarySearch(value, new BinarySearchComparer());
Assert.Equal(arrList2[ndx], value);
}
});
}
[Fact]
public static void BinarySearch_IComparer_NotFoundReturnsNextElementIndex()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(100);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
Assert.Equal(100, ~arrList2.BinarySearch(150, new BinarySearchComparer()));
// Searching for null items should return -1.
Assert.Equal(-1, arrList2.BinarySearch(null, new BinarySearchComparer()));
});
}
[Fact]
public static void BinarySearch_IComparer_NullObject()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(100);
arrList1.Add(null);
arrList1.Sort();
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
Assert.Equal(0, arrList2.BinarySearch(null));
});
}
[Fact]
public static void BinarySearch_IComparer_DuplicateResults()
{
// If we have duplicate results, return the first.
var arrList1 = new ArrayList();
for (int i = 0; i < 100; i++)
arrList1.Add(5);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
// Remember, this is BinarySearch.
Assert.Equal(49, arrList2.BinarySearch(5, new BinarySearchComparer()));
});
}
[Fact]
public static void BinarySearch_Int_Int_IComparer()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
foreach (object value in arrList2)
{
int ndx = arrList2.BinarySearch(0, arrList2.Count, value, new BinarySearchComparer());
Assert.Equal(arrList2[ndx], value);
}
});
}
[Fact]
public static void BinarySearch_Int_Int_IComparer_ObjectOutsideIndex()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
// Index > list.IndexOf(object)
int ndx = arrList2.BinarySearch(1, arrList2.Count - 1, 0, new BinarySearchComparer());
Assert.Equal(-2, ndx);
// Index + count < list.IndexOf(object)
ndx = arrList2.BinarySearch(0, arrList2.Count - 2, 9, new BinarySearchComparer());
Assert.Equal(-9, ndx);
});
}
[Fact]
public static void BinarySearch_Int_Int_IComparer_NullComparer()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
// Locating item in list using a null comparer uses default comparer.
int ndx1 = arrList2.BinarySearch(0, arrList2.Count, 5, null);
int ndx2 = arrList2.BinarySearch(5, null);
int ndx3 = arrList2.BinarySearch(5);
Assert.Equal(ndx1, ndx2);
Assert.Equal(ndx1, ndx3);
Assert.Equal(5, ndx1);
});
}
[Fact]
public static void BinarySearch_Int_Int_IComparer_Invalid()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
IComparer comparer = new BinarySearchComparer();
AssertExtensions.Throws<ArgumentOutOfRangeException>("index", () => arrList2.BinarySearch(-1, 1000, arrList2.Count, comparer)); // Index < 0
AssertExtensions.Throws<ArgumentOutOfRangeException>("index", () => arrList2.BinarySearch(-1, 1000, 1, comparer)); // Index < 0
AssertExtensions.Throws<ArgumentOutOfRangeException>("index", () => arrList2.BinarySearch(-1, arrList2.Count, 1, comparer)); // Index < 0
AssertExtensions.Throws<ArgumentOutOfRangeException>("count", () => arrList2.BinarySearch(0, -1, 1, comparer)); // Count < 0
AssertExtensions.Throws<ArgumentException>(null, () => arrList2.BinarySearch(1, arrList2.Count, 1, comparer)); // Index + Count >= list.Count
AssertExtensions.Throws<ArgumentException>(null, () => arrList2.BinarySearch(3, arrList2.Count - 2, 1, comparer)); // Index + Count >= list.Count
});
}
[Fact]
public static void Capacity_Get()
{
var arrList = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList, arrList2 =>
{
Assert.True(arrList2.Capacity >= arrList2.Count);
});
}
[Fact]
public static void Capacity_Set()
{
var arrList = Helpers.CreateIntArrayList(10);
int nCapacity = 2 * arrList.Capacity;
arrList.Capacity = nCapacity;
Assert.Equal(nCapacity, arrList.Capacity);
// Synchronized
arrList = ArrayList.Synchronized(new ArrayList(Helpers.CreateIntArray(10)));
arrList.Capacity = 1000;
Assert.Equal(1000, arrList.Capacity);
// Range ignores setter
arrList = new ArrayList(Helpers.CreateIntArray(10)).GetRange(0, arrList.Count);
arrList.Capacity = 1000;
Assert.NotEqual(1000, arrList.Capacity);
}
[Fact]
public static void Capacity_Set_Zero()
{
var arrList = new ArrayList(1);
arrList.Capacity = 0;
Assert.Equal(4, arrList.Capacity);
for (int i = 0; i < 32; i++)
arrList.Add(i);
for (int i = 0; i < 32; i++)
Assert.Equal(i, arrList[i]);
}
[Fact]
public static void Capacity_Set_One()
{
var arrList = new ArrayList(4);
arrList.Capacity = 1;
Assert.Equal(1, arrList.Capacity);
for (int i = 0; i < 32; i++)
arrList.Add(i);
for (int i = 0; i < 32; i++)
Assert.Equal(i, arrList[i]);
}
[Fact]
public static void Capacity_Set_InvalidValue_ThrowsArgumentOutOfRangeException()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
if (arrList2.IsFixedSize)
{
return;
}
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => arrList2.Capacity = -1); // Capacity < 0
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => arrList2.Capacity = arrList1.Count - 1); // Capacity < list.Count
});
}
[Theory]
[InlineData(0)]
[InlineData(1)]
[InlineData(10)]
[InlineData(100)]
public static void Clone(int count)
{
// Clone should exactly replicate a collection to another object reference
// afterwards these 2 should not hold the same object references
ArrayList arrList1 = Helpers.CreateIntArrayList(count);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
ArrayList clone = (ArrayList)arrList2.Clone();
Assert.Equal(arrList2.Count, clone.Count);
Assert.Equal(arrList2.IsReadOnly, clone.IsReadOnly);
Assert.Equal(arrList2.IsSynchronized, clone.IsSynchronized);
Assert.Equal(arrList2.IsFixedSize, clone.IsFixedSize);
for (int i = 0; i < arrList2.Count; i++)
{
Assert.Equal(arrList2[i], clone[i]);
}
});
}
[Fact]
public static void Clone_IsShallowCopy()
{
var arrList = new ArrayList();
for (int i = 0; i < 10; i++)
{
arrList.Add(new Foo());
}
ArrayList clone = (ArrayList)arrList.Clone();
string stringValue = "Hello World";
for (int i = 0; i < 10; i++)
{
Assert.Equal(stringValue, ((Foo)clone[i]).StringValue);
}
// Now we remove an object from the original list, but this should still be present in the clone
arrList.RemoveAt(9);
Assert.Equal(stringValue, ((Foo)clone[9]).StringValue);
stringValue = "Good Bye";
((Foo)arrList[0]).StringValue = stringValue;
Assert.Equal(stringValue, ((Foo)arrList[0]).StringValue);
Assert.Equal(stringValue, ((Foo)clone[0]).StringValue);
// If we change the object, of course, the previous should not happen
clone[0] = new Foo();
stringValue = "Good Bye";
Assert.Equal(stringValue, ((Foo)arrList[0]).StringValue);
stringValue = "Hello World";
Assert.Equal(stringValue, ((Foo)clone[0]).StringValue);
}
[Fact]
public static void CopyTo_Int()
{
int index = 1;
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
var arrCopy = new int[arrList2.Count + index];
arrCopy.SetValue(400, 0);
arrList2.CopyTo(arrCopy, index);
Assert.Equal(arrList2.Count + index, arrCopy.Length);
for (int i = 0; i < arrCopy.Length; i++)
{
if (i == 0)
{
Assert.Equal(400, arrCopy.GetValue(i));
}
else
{
Assert.Equal(arrList2[i - 1], arrCopy.GetValue(i));
}
}
});
}
[Fact]
public static void CopyTo_Int_EqualToLength()
{
var arrList1 = new ArrayList();
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
var arrCopy = new string[2];
arrList2.CopyTo(arrCopy, arrCopy.Length); // Should not throw
});
}
[Fact]
public static void CopyTo_Int_EmptyArrayListToFilledArray()
{
var arrList1 = new ArrayList();
var arrCopy = new string[10];
for (int i = 0; i < arrCopy.Length; i++)
{
arrCopy[i] = "a";
}
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
arrList2.CopyTo(arrCopy, 3);
// Make sure sentinels stay the same
for (int i = 0; i < arrCopy.Length; i++)
{
Assert.Equal("a", arrCopy[i]);
}
});
}
[Fact]
public static void CopyTo_Int_EmptyArray()
{
var arrList1 = new ArrayList();
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
var arrCopy = new string[0];
arrList2.CopyTo(arrCopy, 0);
Assert.Equal(0, arrCopy.Length);
});
}
[Fact]
public static void CopyTo_Int_Invalid()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
var arrCopy = new int[arrList2.Count];
Assert.Throws<ArgumentNullException>(() => arrList2.CopyTo(null)); // Array is null
AssertExtensions.Throws<ArgumentException>("array", null, () => arrList2.CopyTo(new object[10, 10])); // Array is multidimensional
Assert.Throws<ArgumentOutOfRangeException>(() => arrList2.CopyTo(arrCopy, -1)); // Index < 0
bool hasParamName = arrList2.GetType().Name != "Range";
AssertExtensions.Throws<ArgumentException>(hasParamName ? "destinationArray" : null, hasParamName ? "" : null, () => arrList2.CopyTo(new object[11], 2)); // Invalid index and length
});
}
[Fact]
public static void CopyTo_Int_Int()
{
int index = 3;
int count = 3;
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
var arrCopy = new int[100];
arrList2.CopyTo(index, arrCopy, index, count);
Assert.Equal(100, arrCopy.Length);
for (int i = index; i < index + count; i++)
{
Assert.Equal(arrList2[i], arrCopy[i]);
}
});
}
[Fact]
public static void CopyTo_Int_Int_EmptyArrayListToFilledArray()
{
var arrList1 = new ArrayList();
var arrCopy = new string[10];
for (int i = 0; i < arrCopy.Length; i++)
{
arrCopy[i] = "a";
}
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
arrList2.CopyTo(0, arrCopy, 3, 0);
// Make sure sentinels stay the same
for (int i = 0; i < arrCopy.Length; i++)
{
Assert.Equal("a", arrCopy[i]);
}
});
}
[Fact]
public static void CopyTo_Int_Int_Invalid()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
Helpers.PerformActionOnAllArrayListWrappers(arrList1, arrList2 =>
{
var arrCopy = new string[10];
Assert.ThrowsAny<ArgumentException>(() => arrList2.CopyTo(0, arrCopy, -1, 1000)); // Array index < 0 (should throw ArgumentOutOfRangeException)
Assert.Throws<ArgumentOutOfRangeException>(() => arrList2.CopyTo(-1, arrCopy, 0, 1)); // Index < 0
Assert.Throws<ArgumentOutOfRangeException>(() => arrList2.CopyTo(0, arrCopy, 0, -1)); // Count < 0
AssertExtensions.Throws<ArgumentException>(null, () =>
{
arrCopy = new string[100];
arrList2.CopyTo(arrList2.Count - 1, arrCopy, 0, 24);
});
Assert.Throws<ArgumentNullException>(() => arrList2.CopyTo(0, null, 3, 3)); // Array is null
AssertExtensions.Throws<ArgumentException>("array", null, () => arrList2.CopyTo(0, new object[arrList2.Count, arrList2.Count], 0, arrList2.Count)); // Array is multidimensional
// Array index and count is out of bounds
AssertExtensions.Throws<ArgumentException>(null, () =>
{
arrCopy = new string[1];
arrList2.CopyTo(0, arrCopy, 3, 15);
});
Assert.ThrowsAny<ArgumentException>(() => arrList2.CopyTo(0, new object[arrList2.Count, arrList2.Count], 0, -1)); // Should throw ArgumentOutOfRangeException
});
}
[Fact]
public static void FixedSize_ArrayList()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
ArrayList arrList2 = ArrayList.FixedSize(arrList1);
Assert.True(arrList2.IsFixedSize);
Assert.False(arrList2.IsReadOnly);
Assert.False(arrList2.IsSynchronized);
Assert.Equal(arrList1.Count, arrList2.Count);
for (int i = 0; i < arrList1.Count; i++)
{
Assert.Equal(arrList1[i], arrList2[i]);
}
// Remove an object from the original list and verify the object underneath has been cut
arrList1.RemoveAt(9);
AssertExtensions.Throws<ArgumentOutOfRangeException>("index", () => arrList2[9]);
// We cant remove or add to the fixed list
Assert.Throws<NotSupportedException>(() => arrList2.RemoveRange(0, 1));
Assert.Throws<NotSupportedException>(() => arrList2.AddRange(new ArrayList()));
Assert.Throws<NotSupportedException>(() => arrList2.InsertRange(0, new ArrayList()));
Assert.Throws<NotSupportedException>(() => arrList2.TrimToSize());
Assert.Throws<NotSupportedException>(() => arrList2.Capacity = 10);
}
[Fact]
public static void FixedSize_ReadOnlyArrayList()
{
ArrayList arrList = ArrayList.FixedSize(ArrayList.ReadOnly(new ArrayList()));
Assert.True(arrList.IsFixedSize);
Assert.True(arrList.IsReadOnly);
Assert.False(arrList.IsSynchronized);
}
[Fact]
public static void FixedSize_SynchronizedArrayList()
{
ArrayList arrList = ArrayList.FixedSize(ArrayList.Synchronized(new ArrayList()));
Assert.True(arrList.IsFixedSize);
Assert.False(arrList.IsReadOnly);
Assert.True(arrList.IsSynchronized);
}
[Fact]
public static void FixedSize_RangeArrayList()
{
ArrayList arrList = ArrayList.FixedSize(new ArrayList()).GetRange(0, 0);
Assert.True(arrList.IsFixedSize);
}
[Fact]
public static void FixedSize_ArrayList_CanChangeExistingItems()
{
ArrayList arrList1 = Helpers.CreateIntArrayList(10);
ArrayList arrList2 = ArrayList.FixedSize(arrList1);
arrList2[0] = 10;
Assert.Equal(10, arrList2[0]);
}
[Fact]
public static void FixedSize_ArrayList_NullCollection_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("list", () => ArrayList.FixedSize(null)); // List is null
}
[Fact]
public static void FixedSize_IList()
{
ArrayList arrList = Helpers.CreateIntArrayList(10);
IList iList = ArrayList.FixedSize((IList)arrList);
Assert.True(iList.IsFixedSize);
Assert.False(iList.IsReadOnly);
Assert.False(iList.IsSynchronized);
Assert.Equal(arrList.Count, iList.Count);
for (int i = 0; i < arrList.Count; i++)
{
Assert.Equal(arrList[i], iList[i]);
}
}
[Fact]
public static void FixedSize_SynchronizedIList()
{
IList iList = ArrayList.FixedSize((IList)ArrayList.Synchronized(new ArrayList()));
Assert.True(iList.IsFixedSize);
Assert.False(iList.IsReadOnly);
Assert.True(iList.IsSynchronized);
}
[Fact]
public static void FixedSize_IList_ModifyingUnderlyingCollection_CutsFacade()
{
ArrayList arrList = Helpers.CreateIntArrayList(10);
IList iList = ArrayList.FixedSize((IList)arrList);
// Remove an object from the original list. Verify the object underneath has been cut
arrList.RemoveAt(9);
AssertExtensions.Throws<ArgumentOutOfRangeException>("index", () => iList[9]);
}