public void PreviewHandlerBase_ShouldThrowOnQueryFocus_WhenPreviewControlsReturnNotValidHandle()
{
// Arrange
var hwnd = IntPtr.Zero;
var mockPreviewControl = new Mock <IPreviewHandlerControl>();
mockPreviewControl.Setup(x => x.QueryFocus(out hwnd));
var actualHwnd = IntPtr.Zero;
previewHandlerControl = mockPreviewControl.Object;
var testPreviewHandler = new TestPreviewHandler();
Win32Exception exception = null;
// Act
try
{
testPreviewHandler.QueryFocus(out actualHwnd);
}
catch (Win32Exception ex)
{
exception = ex;
}
// Assert
Assert.IsNotNull(exception);
mockPreviewControl.Verify(_ => _.QueryFocus(out hwnd), Times.Once);
}
public void PreviewHandlerBase_ShouldSetHandleOnQueryFocus_WhenPreviewControlsReturnValidHandle()
{
// Arrange
var hwnd = new IntPtr(5);
var mockPreviewControl = new Mock <IPreviewHandlerControl>();
mockPreviewControl.Setup(x => x.QueryFocus(out hwnd));
var actualHwnd = IntPtr.Zero;
previewHandlerControl = mockPreviewControl.Object;
var testPreviewHandler = new TestPreviewHandler();
// Act
testPreviewHandler.QueryFocus(out actualHwnd);
// Assert
Assert.AreEqual(actualHwnd, hwnd);
mockPreviewControl.Verify(_ => _.QueryFocus(out hwnd), Times.Once);
}
