public void ColumnHeaderCollection_Contains_Empty_ReturnsFalse()
{
var listView = new ListView();
var collection = new ListView.ColumnHeaderCollection(listView);
Assert.False(collection.Contains(new ColumnHeader()));
Assert.False(collection.Contains(null));
}
public void ColumnHeaderCollection_IListContains_Empty_ReturnsFalse()
{
using var listView = new ListView();
IList collection = new ListView.ColumnHeaderCollection(listView);
Assert.False(collection.Contains(new ColumnHeader()));
Assert.False(collection.Contains(new object()));
Assert.False(collection.Contains(null));
}
public void ColumnHeaderCollection_Contains_Invoke_ReturnsExpected()
{
var listView = new ListView();
var collection = new ListView.ColumnHeaderCollection(listView);
var header = new ColumnHeader();
collection.Add(header);
Assert.True(collection.Contains(header));
Assert.False(collection.Contains(new ColumnHeader()));
Assert.False(collection.Contains(null));
}
public bool Contains(ColumnHeaderEx item) => list.Contains(item);
