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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;
namespace System.Windows.Forms.Tests;
public class AutoCompleteStringCollectionTests
{
[Fact]
public void Ctor_Default()
{
AutoCompleteStringCollection collection = new();
Assert.Equal(0, collection.Count);
Assert.False(collection.IsReadOnly);
}
[WinFormsFact]
public void AutoCompleteStringCollection_AddRange_Invoke_Success()
{
AutoCompleteStringCollection collection = new();
string[] values = ["1", "2", "3"];
collection.AddRange(values);
foreach (string s in values)
{
Assert.True(collection.Contains(s));
}
}
[WinFormsFact]
public void AutoCompleteStringCollection_AddRange_NullValue_ThrowsArgumentNullException()
{
AutoCompleteStringCollection collection = new();
Assert.Throws<ArgumentNullException>("value", () => collection.AddRange(null));
}
#nullable enable
[WinFormsFact]
public void AutoCompleteStringCollection_AddRange_NullValues_Nop()
{
AutoCompleteStringCollection collection = new();
collection.AddRange([null!]);
Assert.Empty(collection);
}
[WinFormsFact]
public void AutoCompleteStringCollection_Add_NullValue_ThrowsArgumentNullException()
{
AutoCompleteStringCollection collection = new();
Assert.Throws<ArgumentNullException>("value", () => collection.AddRange(null!));
}
#nullable disable
[WinFormsFact]
public void AutoCompleteStringCollection_Contains_Invoke_ReturnsExpected()
{
AutoCompleteStringCollection collection = new();
string s = "value";
collection.Add(s);
Assert.True(collection.Contains(s));
Assert.False(collection.Contains("anotherValue"));
Assert.False(collection.Contains(null));
}
[WinFormsFact]
public void AutoCompleteStringCollection_Contains_Empty_ReturnsFalse()
{
AutoCompleteStringCollection collection = new();
Assert.False(collection.Contains("value"));
Assert.False(collection.Contains(null));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListContains_Invoke_ReturnsExpected()
{
IList collection = new AutoCompleteStringCollection();
string s = "value";
collection.Add(s);
Assert.True(collection.Contains(s));
Assert.False(collection.Contains("anotherValue"));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListContains_Empty_ReturnsFalse()
{
IList collection = new AutoCompleteStringCollection();
Assert.False(collection.Contains("value"));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IndexOf_Invoke_ReturnsExpected()
{
AutoCompleteStringCollection collection = new();
string s = "value";
collection.Add(s);
Assert.Equal(0, collection.IndexOf(s));
Assert.Equal(-1, collection.IndexOf("anotherValue"));
Assert.Equal(-1, collection.IndexOf(null));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IndexOf_Empty_ReturnsFalse()
{
AutoCompleteStringCollection collection = new();
Assert.Equal(-1, collection.IndexOf("value"));
Assert.Equal(-1, collection.IndexOf(null));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListIndexOf_Invoke_ReturnsExpected()
{
IList collection = new AutoCompleteStringCollection();
string s = "value";
collection.Add(s);
Assert.Equal(0, collection.IndexOf(s));
Assert.Equal(-1, collection.IndexOf("anotherValue"));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListIndexOf_Empty_ReturnsMinusOne()
{
IList collection = new AutoCompleteStringCollection();
Assert.Equal(-1, collection.IndexOf("value"));
}
[WinFormsFact]
public void AutoCompleteStringCollection_Insert_String_Success()
{
AutoCompleteStringCollection collection = new();
string s = "value1";
collection.Add("value2");
collection.Insert(1, s);
Assert.Equal(2, collection.Count);
Assert.Same(s, collection[1]);
}
[WinFormsFact]
public void AutoCompleteStringCollection_Insert_AlreadyInOtherCollection_GetReturnsExpected()
{
AutoCompleteStringCollection collection = new();
collection.Add("value1");
AutoCompleteStringCollection otherCollection = new();
string s = "value2";
otherCollection.Add(s);
// The string appears to belong to two collections.
collection.Insert(0, s);
Assert.Same(s, collection[0]);
Assert.Equal(s, collection[0]);
Assert.Equal(s, Assert.Single(otherCollection));
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void AutoCompleteStringCollection_Insert_InvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
AutoCompleteStringCollection collection = new();
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection.Insert(index, "value"));
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListInsert_String_Success()
{
IList collection = new AutoCompleteStringCollection();
string s = "value1";
collection.Add("value2");
collection.Insert(1, s);
Assert.Equal(2, collection.Count);
Assert.Same(s, collection[1]);
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListInsert_NullItem_ThrowsArgumentOutOfRangeException()
{
IList collection = new AutoCompleteStringCollection();
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection.Insert(-1, null));
Assert.Empty(collection);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void AutoCompleteStringCollection_IListInsert_InvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
IList collection = new AutoCompleteStringCollection();
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection.Insert(index, "value"));
}
#nullable enable
[WinFormsFact]
public void AutoCompleteStringCollection_IListInsert_NullItem_Nop()
{
IList collection = new AutoCompleteStringCollection();
collection.Insert(0, null);
Assert.Empty(collection);
}
#nullable disable
[WinFormsFact]
public void AutoCompleteStringCollection_Remove_String_Success()
{
AutoCompleteStringCollection collection = new();
collection.Add("value");
// Remove null.
collection.Remove(null);
Assert.Same("value", Assert.Single(collection));
collection.Remove("value");
Assert.Empty(collection);
// Remove again.
collection.Remove("value");
Assert.Empty(collection);
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListRemove_String_Success()
{
IList collection = new AutoCompleteStringCollection();
collection.Add("value");
collection.Remove("value");
Assert.Empty(collection);
// Remove again.
collection.Remove("value");
Assert.Empty(collection);
}
[WinFormsTheory]
[InlineData(null)]
[InlineData("text")]
public void AutoCompleteStringCollection_IListRemove_InvalidItem_Nop(object value)
{
IList collection = new AutoCompleteStringCollection();
collection.Add(value);
collection.Remove(value);
Assert.Empty(collection);
}
[WinFormsFact]
public void AutoCompleteStringCollection_CopyTo_NonEmpty_Success()
{
AutoCompleteStringCollection collection = new();
collection.Add("value");
string[] array = ["1", "2", "3"];
collection.CopyTo(array, 1);
Assert.Equal(new string[] { "1", "value", "3" }, array);
}
[WinFormsFact]
public void AutoCompleteStringCollection_CopyTo_Empty_Nop()
{
AutoCompleteStringCollection collection = new();
string[] array = ["1", "2", "3"];
collection.CopyTo(array, 0);
Assert.Equal(new string[] { "1", "2", "3" }, array);
}
[WinFormsFact]
public void AutoCompleteStringCollection_GetEnumerator_InvokeEmpty_ReturnsExpected()
{
AutoCompleteStringCollection collection = new();
IEnumerator enumerator = collection.GetEnumerator();
for (int i = 0; i < 2; i++)
{
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Move again.
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Reset.
enumerator.Reset();
}
}
[WinFormsFact]
public void AutoCompleteStringCollection_GetEnumerator_InvokeNotEmpty_ReturnsExpected()
{
AutoCompleteStringCollection collection = new();
collection.Add("2");
IEnumerator enumerator = collection.GetEnumerator();
for (int i = 0; i < 2; i++)
{
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
Assert.True(enumerator.MoveNext());
Assert.Equal("2", enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Move again.
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Reset.
enumerator.Reset();
}
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListGetEnumerator_InvokeEmpty_ReturnsExpected()
{
IList collection = new AutoCompleteStringCollection();
IEnumerator enumerator = collection.GetEnumerator();
for (int i = 0; i < 2; i++)
{
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Move again.
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Reset.
enumerator.Reset();
}
}
[WinFormsFact]
public void AutoCompleteStringCollection_IListGetEnumerator_InvokeNotEmpty_ReturnsExpected()
{
IList collection = new AutoCompleteStringCollection();
collection.Add("2");
IEnumerator enumerator = collection.GetEnumerator();
for (int i = 0; i < 2; i++)
{
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
Assert.True(enumerator.MoveNext());
Assert.Equal("2", enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Move again.
Assert.False(enumerator.MoveNext());
Assert.Throws<InvalidOperationException>(() => enumerator.Current);
// Reset.
enumerator.Reset();
}
}
}
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