public void CheckedListBox_RefreshItems_InvokeNotEmptyWithHandle_Success()
{
using var control = new SubCheckedListBox();
control.Items.Add("item1");
control.Items.Add("item2");
Assert.NotEqual(IntPtr.Zero, control.Handle);
int invalidatedCallCount = 0;
control.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
control.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
control.HandleCreated += (sender, e) => createdCallCount++;
control.RefreshItems();
Assert.Equal(new object[] { "item1", "item2" }, control.Items.Cast <object>());
Assert.True(control.IsHandleCreated);
Assert.Equal(1, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
// Call again.
control.RefreshItems();
Assert.Equal(new object[] { "item1", "item2" }, control.Items.Cast <object>());
Assert.True(control.IsHandleCreated);
Assert.Equal(2, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
public void CheckedListBox_RefreshItems_InvokeEmpty_Success()
{
using var control = new SubCheckedListBox();
control.RefreshItems();
Assert.Empty(control.Items);
Assert.False(control.IsHandleCreated);
// Call again.
control.RefreshItems();
Assert.Empty(control.Items);
Assert.False(control.IsHandleCreated);
}
public void CheckedListBox_RefreshItems_InvokeNotEmpty_Success()
{
using var control = new SubCheckedListBox();
control.Items.Add("item1");
control.Items.Add("item2");
control.RefreshItems();
Assert.Equal(new object[] { "item1", "item2" }, control.Items.Cast <object>());
Assert.False(control.IsHandleCreated);
// Call again.
control.RefreshItems();
Assert.Equal(new object[] { "item1", "item2" }, control.Items.Cast <object>());
Assert.False(control.IsHandleCreated);
}