public void WhenClosingDialogWithMultipleDialogHostsItThrowsTooManyMatchingInstances()
{
var secondInstance = new DialogHost();
try
{
secondInstance.RaiseEvent(new RoutedEventArgs(FrameworkElement.LoadedEvent));
var ex = Assert.Throws <InvalidOperationException>(() => DialogHost.Close(null));
Assert.Equal("Multiple viable DialogHosts. Specify a unique Identifier on each DialogHost, especially where multiple Windows are a concern.", ex.Message);
}
finally
{
secondInstance.RaiseEvent(new RoutedEventArgs(FrameworkElement.UnloadedEvent));
}
}
public async Task WhenMultipleDialogHostsHaveTheSameIdentifierItThrows()
{
var id = Guid.NewGuid();
_dialogHost.Identifier = id;
var otherDialogHost = new DialogHost {
Identifier = id
};
otherDialogHost.RaiseEvent(new RoutedEventArgs(FrameworkElement.LoadedEvent));
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => DialogHost.Show("Content", id));
otherDialogHost.RaiseEvent(new RoutedEventArgs(FrameworkElement.UnloadedEvent));
Assert.Equal("Multiple viable DialogHosts. Specify a unique Identifier on each DialogHost, especially where multiple Windows are a concern.", ex.Message);
}
public DialogHostTests()
{
_dialogHost = new DialogHost();
_dialogHost.ApplyDefaultStyle();
_dialogHost.RaiseEvent(new RoutedEventArgs(FrameworkElement.LoadedEvent));
}
public void Dispose()
{
_dialogHost.RaiseEvent(new RoutedEventArgs(FrameworkElement.UnloadedEvent));
}