public async Task Check_Changing_Header_Affects_UI()
{
var pivotItem = new PivotItem {
Header = "Initial text"
};
var SUT = new Pivot
{
Items = { pivotItem },
};
WindowHelper.WindowContent = SUT;
await WindowHelper.WaitForIdle();
var pivotHeaderPanel = (PivotHeaderPanel)SUT.GetTemplateChild("StaticHeader");
var headerItem = (PivotHeaderItem)pivotHeaderPanel.Children.Single();
headerItem.Content.Should().Be("Initial text");
pivotItem.Header = "New text";
headerItem.Content.Should().Be("New text");
}