public void ShouldAllowToNavigateToAnotherViewWhenExecutedWhenRegionAndViewAreValid()
{
// Given
IChangeRegionsViewCommand <string> command = new ChangeRegionsViewCommand <string>(_regionManagerMock.Object, _regionName);
// When
command.Execute(_viewName);
// Then
_regionMock.Verify(r => r.RequestNavigate(new Uri(_viewName, UriKind.RelativeOrAbsolute), It.IsNotNull <Action <NavigationResult> >()), Times.Once);
}
public void ShouldNotAllowToChangeRegionsViewProvidedNotRegisteredRegionToNavigate()
{
// Given
var regionCollection = new TestRegionCollection();
var regionManagerMock = new Mock <IRegionManager>();
var notExistingRegionName = Guid.NewGuid().ToString();
regionManagerMock.SetupGet(r => r.Regions).Returns(regionCollection);
IChangeRegionsViewCommand <string> command = new ChangeRegionsViewCommand <string>(regionManagerMock.Object, notExistingRegionName);
// When
// Then
Assert.IsFalse(command.CanExecute(_viewName));
Assert.Throws <CannotExecuteCommandException>(() => command.Execute(_viewName));
}