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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 ListViewGroupCollectionTests
{
[WinFormsFact]
public void ListViewGroupCollection_IList_GetProperties_ReturnsExpected()
{
using ListView listView = new();
IList collection = listView.Groups;
Assert.Empty(collection);
Assert.False(collection.IsFixedSize);
Assert.False(collection.IsReadOnly);
Assert.True(collection.IsSynchronized);
Assert.Same(collection, collection.SyncRoot);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_GetValidIndex_ReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.Same(group, collection[0]);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_Item_GetInvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection[index]);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetValidIndex_GetReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
ListViewGroup group = new();
collection[0] = group;
Assert.Same(group, collection[0]);
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetListViewGroupWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
ListViewGroup group = new();
collection[0] = group;
Assert.Same(group, collection[0]);
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetListViewGroupWithItems_Success()
{
using ListView listView = new();
ListViewItem item = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
ListViewGroup group = new();
group.Items.Add(new ListViewItem());
group.Items.Add(item);
listView.Items.Add(item);
collection[0] = group;
Assert.Same(group, Assert.Single(collection));
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetListViewGroupWithItemsWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewItem item = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
ListViewGroup group = new();
group.Items.Add(new ListViewItem());
group.Items.Add(item);
listView.Items.Add(item);
collection[0] = group;
Assert.Same(group, Assert.Single(collection));
Assert.Same(listView, group.ListView);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(0)]
[InlineData(1)]
public void ListViewGroupCollection_Item_SetAlreadyInCollection_Nop(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new();
collection.Add(group1);
collection.Add(group2);
collection[index] = group2;
Assert.Same(group1, collection[0]);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetAlreadyInOtherCollection_GetReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
using ListView otherListView = new();
ListViewGroupCollection otherCollection = otherListView.Groups;
ListViewGroup group = new();
otherCollection.Add(group);
collection[0] = group;
Assert.Same(group, collection[0]);
Assert.Same(listView, group.ListView);
Assert.Equal(group, Assert.Single(collection));
Assert.Equal(group, Assert.Single(otherCollection));
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetHasItemsFromOtherListView_ThrowsArgumentException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup oldGroup = new();
collection.Add(oldGroup);
using ListView otherListView = new();
ListViewItem item = new();
ListViewGroup group = new();
group.Items.Add(item);
otherListView.Items.Add(item);
Assert.Throws<ArgumentException>(() => collection[0] = group);
Assert.Same(oldGroup, Assert.Single(collection.Cast<ListViewGroup>()));
Assert.Null(group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetNull_ThrowsArgumentNullException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
Assert.Throws<ArgumentNullException>("value", () => collection[0] = null);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_Item_SetInvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection[index] = new ListViewGroup());
}
[WinFormsFact]
public void ListViewGroupCollection_IListItem_GetValidIndex_ReturnsExpected()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.Same(group, collection[0]);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_IListItem_GetInvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
IList collection = listView.Groups;
collection.Add(new ListViewGroup());
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection[index]);
}
[WinFormsFact]
public void ListViewGroupCollection_IListItem_SetValidIndex_GetReturnsExpected()
{
using ListView listView = new();
IList collection = listView.Groups;
collection.Add(new ListViewGroup());
ListViewGroup group = new();
collection[0] = group;
Assert.Same(group, collection[0]);
}
[WinFormsFact]
public void ListViewGroupCollection_IListItem_SetAlreadyInCollection_Nop()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new();
collection.Add(group1);
collection.Add(group2);
collection[0] = group2;
Assert.Same(group1, collection[0]);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_IListItem_SetInvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
IList collection = listView.Groups;
collection.Add(new ListViewGroup());
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection[index] = new ListViewGroup());
}
[WinFormsTheory]
[InlineData(null)]
[InlineData("text")]
public void ListViewGroupCollection_IListItem_SetInvalidValue_Nop(object value)
{
using ListView listView = new();
IList collection = listView.Groups;
collection[0] = value;
}
[WinFormsTheory]
[InlineData(null, 0)]
[InlineData("text", 1)]
public void ListViewGroupCollection_Item_GetStringExists_ReturnsExpected(string key, int expectedIndex)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new()
{
Name = "text"
};
collection.Add(group1);
collection.Add(group2);
Assert.Equal(collection[expectedIndex], collection[key]);
}
[WinFormsTheory]
[InlineData("")]
[InlineData("longer")]
[InlineData("sm")]
[InlineData("tsxt")]
[InlineData("TEXT")]
public void ListViewGroupCollection_Item_GetNoSuchString_ReturnsNull(string key)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new()
{
Name = "text"
};
collection.Add(group1);
collection.Add(group2);
Assert.Null(collection[key]);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_GetStringEmptyCollection_ReturnsNull()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Null(collection["text"]);
}
[WinFormsTheory]
[InlineData(null, 0)]
[InlineData("text", 1)]
public void ListViewGroupCollection_Item_SetStringExists_GetReturnsExpected(string key, int expectedIndex)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new()
{
Name = "text"
};
collection.Add(group1);
collection.Add(group2);
ListViewGroup group3 = new();
collection[key] = group3;
Assert.Same(group3, collection[expectedIndex]);
}
[WinFormsTheory]
[InlineData("")]
[InlineData("longer")]
[InlineData("sm")]
[InlineData("tsxt")]
[InlineData("TEXT")]
public void ListViewGroupCollection_Item_SetNoSuchString_Nop(string key)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new()
{
Name = "text"
};
collection.Add(group1);
collection.Add(group2);
ListViewGroup group3 = new();
collection[key] = group3;
Assert.Same(group1, collection[0]);
Assert.Same(group2, collection[1]);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetStringEmptyCollection_Nop()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection["text"] = new ListViewGroup();
Assert.Empty(collection);
}
[WinFormsFact]
public void ListViewGroupCollection_Item_SetStringNullValue_ThrowsArgumentNullException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Throws<ArgumentNullException>("value", () => collection["key"] = null);
}
[WinFormsFact]
public void ListViewGroupCollection_Add_ListViewGroup_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
Assert.Equal(0, collection.Add(group1));
Assert.Same(group1, Assert.Single(collection));
Assert.Same(listView, group1.ListView);
// Add another.
ListViewGroup group2 = new();
Assert.Equal(1, collection.Add(group2));
Assert.Equal(new ListViewGroup[] { group1, group2 }, collection.Cast<ListViewGroup>());
Assert.Same(listView, group2.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Add_ListViewGroupWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
Assert.Equal(0, collection.Add(group1));
Assert.Same(group1, Assert.Single(collection));
Assert.Same(listView, group1.ListView);
// Add another.
ListViewGroup group2 = new();
Assert.Equal(1, collection.Add(group2));
Assert.Equal(new ListViewGroup[] { group1, group2 }, collection.Cast<ListViewGroup>());
Assert.Same(listView, group2.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Add_ListViewGroupWithItems_Success()
{
using ListView listView = new();
ListViewItem item = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
group.Items.Add(new ListViewItem());
group.Items.Add(item);
listView.Items.Add(item);
Assert.Equal(0, collection.Add(group));
Assert.Same(group, Assert.Single(collection));
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Add_ListViewGroupWithItemsWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewItem item = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
group1.Items.Add(new ListViewItem());
group1.Items.Add(item);
listView.Items.Add(item);
Assert.Equal(0, collection.Add(group1));
Assert.Same(group1, Assert.Single(collection));
Assert.Same(listView, group1.ListView);
ListViewGroup group2 = new();
}
[WinFormsFact]
public void ListViewGroupCollection_Add_AlreadyInCollection_Nop()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new();
Assert.Equal(0, collection.Add(group1));
Assert.Equal(1, collection.Add(group2));
Assert.Equal(-1, collection.Add(group1));
Assert.Equal(2, collection.Count);
}
[WinFormsFact]
public void ListViewGroupCollection_Add_AlreadyInOtherCollection_GetReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
using ListView otherListView = new();
ListViewGroupCollection otherCollection = otherListView.Groups;
ListViewGroup group = new();
otherCollection.Add(group);
// The group appears to belong to two list views.
collection.Add(group);
Assert.Same(group, collection[0]);
Assert.Same(listView, group.ListView);
Assert.Equal(group, Assert.Single(collection));
Assert.Equal(group, Assert.Single(otherCollection));
}
[WinFormsFact]
public void ListViewGroupCollection_Add_NullGroup_ThrowsArgumentNullException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Throws<ArgumentNullException>("group", () => collection.Add(null));
}
[WinFormsFact]
public void ListViewGroupCollection_Add_HasItemsFromOtherListView_ThrowsArgumentException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
using ListView otherListView = new();
ListViewItem item = new();
ListViewGroup group = new();
group.Items.Add(item);
otherListView.Items.Add(item);
Assert.Throws<ArgumentException>(() => collection.Add(group));
Assert.Empty(collection);
}
[WinFormsTheory]
[InlineData(null, null, "")]
[InlineData("", "", "")]
[InlineData("key", "headerText", "headerText")]
public void ListViewGroupCollection_Add_StringString_Success(string key, string headerText, string expectedHeaderText)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(key, headerText);
ListViewGroup group = Assert.Single(collection.Cast<ListViewGroup>());
Assert.Equal(key, group.Name);
Assert.Equal(expectedHeaderText, group.Header);
}
[WinFormsFact]
public void ListViewGroupCollection_IListAdd_ListViewGroup_Success()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.Same(group, Assert.Single(collection));
Assert.Same(listView, group.ListView);
}
[WinFormsTheory]
[InlineData(null)]
[InlineData("text")]
public void ListViewGroupCollection_IListAdd_NotListViewGroup_ThrowsArgumentException(object value)
{
using ListView listView = new();
IList collection = listView.Groups;
Assert.Throws<ArgumentException>("value", () => collection.Add(value));
}
[WinFormsFact]
public void ListViewGroupCollection_AddRange_ListViewGroupArray_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new();
var items = new ListViewGroup[] { group1, group2 };
collection.AddRange(items);
Assert.Equal(2, collection.Count);
Assert.Same(group1, collection[0]);
Assert.Same(group2, collection[1]);
}
[WinFormsFact]
public void ListViewGroupCollection_AddRange_ListViewGroupCollection_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
using ListView otherListView = new();
ListViewGroupCollection otherCollection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new();
otherCollection.Add(group1);
otherCollection.Add(group2);
collection.AddRange(otherCollection);
Assert.Equal(2, collection.Count);
Assert.Same(group1, collection[0]);
Assert.Same(group2, collection[1]);
Assert.Equal(2, otherCollection.Count);
Assert.Same(group1, otherCollection[0]);
Assert.Same(group2, otherCollection[1]);
}
[WinFormsFact]
public void ListViewGroupCollection_AddRange_NullGroups_ThrowsArgumentNullException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Throws<ArgumentNullException>("groups", () => collection.AddRange((ListViewGroup[])null));
Assert.Throws<ArgumentNullException>("groups", () => collection.AddRange((ListViewGroupCollection)null));
}
[WinFormsFact]
public void ListViewGroupCollection_AddRange_NullValueInGroups_ThrowsArgumentNullException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
Assert.Throws<ArgumentNullException>("group", () => collection.AddRange((ListViewGroup[])[group, null]));
Assert.Same(group, Assert.Single(collection.Cast<ListViewGroup>()));
}
[WinFormsFact]
public void ListViewGroupCollection_Clear_Invoke_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
collection.Clear();
Assert.Empty(collection);
Assert.Null(group.ListView);
// Clear again.
collection.Clear();
Assert.Empty(collection);
Assert.Null(group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Clear_InvokeListViewHasHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
collection.Clear();
Assert.Empty(collection);
Assert.Null(group.ListView);
// Clear again.
collection.Clear();
Assert.Empty(collection);
Assert.Null(group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Clear_Empty_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Clear();
Assert.Empty(collection);
}
[WinFormsFact]
public void ListViewGroupCollection_Contains_Invoke_ReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.True(collection.Contains(group));
Assert.False(collection.Contains(new ListViewGroup()));
Assert.False(collection.Contains(null));
}
[WinFormsFact]
public void ListViewGroupCollection_Contains_Empty_ReturnsFalse()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.False(collection.Contains(new ListViewGroup()));
Assert.False(collection.Contains(null));
}
[WinFormsFact]
public void ListViewGroupCollection_IListContains_Invoke_ReturnsExpected()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.True(collection.Contains(group));
Assert.False(collection.Contains(new ListViewGroup()));
Assert.False(collection.Contains(new object()));
Assert.False(collection.Contains(null));
}
[WinFormsFact]
public void ListViewGroupCollection_IListContains_Empty_ReturnsFalse()
{
using ListView listView = new();
IList collection = listView.Groups;
Assert.False(collection.Contains(new ListViewGroup()));
Assert.False(collection.Contains(new object()));
Assert.False(collection.Contains(null));
}
[WinFormsFact]
public void ListViewGroupCollection_IndexOf_Invoke_ReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.Equal(0, collection.IndexOf(group));
Assert.Equal(-1, collection.IndexOf(new ListViewGroup()));
Assert.Equal(-1, collection.IndexOf(null));
}
[WinFormsFact]
public void ListViewGroupCollection_IndexOf_Empty_ReturnsFalse()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Equal(-1, collection.IndexOf(new ListViewGroup()));
Assert.Equal(-1, collection.IndexOf(null));
}
[WinFormsFact]
public void ListViewGroupCollection_IListIndexOf_Invoke_ReturnsExpected()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
Assert.Equal(0, collection.IndexOf(group));
Assert.Equal(-1, collection.IndexOf(new ListViewGroup()));
Assert.Equal(-1, collection.IndexOf(new object()));
Assert.Equal(-1, collection.IndexOf(null));
}
[WinFormsFact]
public void ListViewGroupCollection_IListIndexOf_Empty_ReturnsMinusOne()
{
using ListView listView = new();
IList collection = listView.Groups;
Assert.Equal(-1, collection.IndexOf(new ListViewGroup()));
Assert.Equal(-1, collection.IndexOf(new object()));
Assert.Equal(-1, collection.IndexOf(null));
}
[WinFormsFact]
public void ListViewGroupCollection_Insert_ListViewGroup_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(new ListViewGroup());
collection.Insert(1, group);
Assert.Equal(2, collection.Count);
Assert.Same(group, collection[1]);
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Insert_ListViewGroupWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(new ListViewGroup());
collection.Insert(1, group);
Assert.Equal(2, collection.Count);
Assert.Same(group, collection[1]);
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Insert_ListViewGroupWithItems_Success()
{
using ListView listView = new();
ListViewItem item = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
group.Items.Add(new ListViewItem());
group.Items.Add(item);
listView.Items.Add(item);
collection.Insert(0, group);
Assert.Same(group, Assert.Single(collection));
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Insert_ListViewGroupWithItemsWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
ListViewItem item = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
group.Items.Add(new ListViewItem());
group.Items.Add(item);
listView.Items.Add(item);
collection.Insert(0, group);
Assert.Same(group, Assert.Single(collection));
Assert.Same(listView, group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Insert_AlreadyInOtherCollection_GetReturnsExpected()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
using ListView otherListView = new();
ListViewGroupCollection otherCollection = otherListView.Groups;
ListViewGroup group = new();
otherCollection.Add(group);
// The group appears to belong to two list views.
collection.Insert(0, group);
Assert.Same(group, collection[0]);
Assert.Same(listView, group.ListView);
Assert.Equal(group, collection[0]);
Assert.Equal(group, Assert.Single(otherCollection));
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(0)]
[InlineData(1)]
public void ListViewGroupCollection_Insert_SetAlreadyInCollection_Nop(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group1 = new();
ListViewGroup group2 = new();
collection.Add(group1);
collection.Add(group2);
collection.Insert(index, group2);
Assert.Same(group1, collection[0]);
}
[WinFormsFact]
public void ListViewGroupCollection_Insert_HasItemsFromOtherListView_ThrowsArgumentException()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
using ListView otherListView = new();
ListViewItem item = new();
ListViewGroup group = new();
group.Items.Add(item);
otherListView.Items.Add(item);
Assert.Throws<ArgumentException>(() => collection.Insert(0, group));
Assert.Empty(collection);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
[InlineData(2)]
public void ListViewGroupCollection_Insert_NullGroup_ThrowsArgumentNullException(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
collection.Add(new ListViewGroup());
Assert.Throws<ArgumentNullException>("group", () => collection.Insert(index, null));
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_Insert_InvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection.Insert(index, new ListViewGroup()));
}
[WinFormsFact]
public void ListViewGroupCollection_IListInsert_ListViewGroup_Success()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(new ListViewGroup());
collection.Insert(1, group);
Assert.Equal(2, collection.Count);
Assert.Same(group, collection[1]);
Assert.Same(listView, group.ListView);
}
[WinFormsTheory]
[InlineData(null)]
[InlineData("text")]
public void ListViewGroupCollection_IListInsert_InvalidItem_Nop(object value)
{
using ListView listView = new();
IList collection = listView.Groups;
collection.Insert(-1, value);
collection.Insert(0, value);
Assert.Empty(collection);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_IListInsert_InvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
IList collection = listView.Groups;
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection.Insert(index, new ListViewGroup()));
}
[WinFormsFact]
public void ListViewGroupCollection_Remove_ListViewGroup_Success()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
// Remove null.
collection.Remove(null);
Assert.Same(group, Assert.Single(collection));
collection.Remove(group);
Assert.Empty(collection);
Assert.Null(group.ListView);
// Remove again.
collection.Remove(group);
Assert.Empty(collection);
Assert.Null(group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_Remove_ListViewGroupWithHandle_Success()
{
using ListView listView = new();
Assert.NotEqual(IntPtr.Zero, listView.Handle);
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
// Remove null.
collection.Remove(null);
Assert.Same(group, Assert.Single(collection));
collection.Remove(group);
Assert.Empty(collection);
Assert.Null(group.ListView);
// Remove again.
collection.Remove(group);
Assert.Empty(collection);
Assert.Null(group.ListView);
}
[WinFormsFact]
public void ListViewGroupCollection_IListRemove_ListViewGroup_Success()
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
collection.Remove(group);
Assert.Empty(collection);
Assert.Null(group.ListView);
// Remove again.
collection.Remove(group);
Assert.Empty(collection);
Assert.Null(group.ListView);
}
[WinFormsTheory]
[InlineData(null)]
[InlineData("text")]
public void ListViewGroupCollection_IListRemove_InvalidItem_Nop(object value)
{
using ListView listView = new();
IList collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
collection.Remove(value);
Assert.Same(group, Assert.Single(collection));
}
[WinFormsFact]
public void ListViewGroupCollection_RemoveAt_ValidIndex_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
collection.Add(new ListViewGroup());
collection.Add(new ListViewGroup());
collection.Add(new ListViewGroup());
// Remove from start.
collection.RemoveAt(0);
Assert.Equal(3, collection.Count);
// Remove from middle.
collection.RemoveAt(1);
Assert.Equal(2, collection.Count);
// Remove from end.
collection.RemoveAt(1);
Assert.Single(collection);
// Remove only.
collection.RemoveAt(0);
Assert.Empty(collection);
Assert.Null(group.ListView);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ListViewGroupCollection_RemoveAt_InvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
Assert.Throws<ArgumentOutOfRangeException>("index", () => collection.RemoveAt(index));
}
[WinFormsFact]
public void ListViewGroupCollection_CopyTo_NonEmpty_Success()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
ListViewGroup group = new();
collection.Add(group);
object[] array = [1, 2, 3];
collection.CopyTo(array, 1);
Assert.Equal([1, group, 3], array);
}
[WinFormsFact]
public void ListViewGroupCollection_CopyTo_Empty_Nop()
{
using ListView listView = new();
ListViewGroupCollection collection = listView.Groups;
object[] array = [1, 2, 3];
collection.CopyTo(array, 0);
Assert.Equal([1, 2, 3], array);
}
[WinFormsTheory]
[InlineData(true)]
[InlineData(false)]
public void ListViewGroupCollection_Add_Group_DoesNotWork_IfVirtualMode(bool createControl)
{
using ListView listView = new() { VirtualMode = true };
if (createControl)
{
listView.CreateControl();
}
Assert.Throws<InvalidOperationException>(() => listView.Groups.Add(new ListViewGroup()));
Assert.Equal(createControl, listView.IsHandleCreated);
}
[WinFormsTheory]
[InlineData(true)]
[InlineData(false)]
public void ListViewGroupCollection_Add_Key_HeaderText_DoesNotWork_IfVirtualMode(bool createControl)
{
using ListView listView = new() { VirtualMode = true };
if (createControl)
{
listView.CreateControl();
}
Assert.Throws<InvalidOperationException>(() => listView.Groups.Add(key: "key", headerText: "text"));
Assert.Equal(createControl, listView.IsHandleCreated);
}
[WinFormsTheory]
[InlineData(true)]
[InlineData(false)]
public void ListViewGroupCollection_AddRange_GroupsArray_DoesNotWork_IfVirtualMode(bool createControl)
{
using ListView listView = new() { VirtualMode = true };
if (createControl)
{
listView.CreateControl();
}
Assert.Throws<InvalidOperationException>(() => listView.Groups.AddRange((ListViewGroup[])[new(), new()]));
Assert.Equal(createControl, listView.IsHandleCreated);
}
[WinFormsTheory]
[InlineData(true)]
[InlineData(false)]
public void ListViewGroupCollection_AddRange_ListViewGroupCollection_DoesNotWork_IfVirtualMode(bool createControl)
{
using ListView listView = new() { VirtualMode = true };
using ListView listViewSource = new();
ListViewGroupCollection sourceGroup = new(listViewSource);
sourceGroup.AddRange((ListViewGroup[])[new(), new()]);
if (createControl)
{
listView.CreateControl();
}
Assert.Throws<InvalidOperationException>(() => listView.Groups.AddRange(sourceGroup));
Assert.Equal(createControl, listView.IsHandleCreated);
}
[WinFormsTheory]
[InlineData(true)]
[InlineData(false)]
public void ListViewGroupCollection_Insert_DoesNotWork_IfVirtualMode(bool createControl)
{
using ListView listView = new() { VirtualMode = true };
if (createControl)
{
listView.CreateControl();
}
Assert.Throws<InvalidOperationException>(() => listView.Groups.Insert(0, new ListViewGroup()));
Assert.Equal(createControl, listView.IsHandleCreated);
}
}
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