public void ExceptionThrowned_WhenAskedForUnknownFeature()
{
// Arrange
var features = new FeatureCollection();
var thing = new Thing();
features.Set <IThing>(thing);
// Assert
Assert.Throws <InvalidOperationException>(() => features.GetRequiredFeature <object>());
}
public void AddedFeatureGetsReturned()
{
// Arrange
var features = new FeatureCollection();
var thing = new Thing();
features.Set <IThing>(thing);
// Act
var retrivedThing = features.GetRequiredFeature <IThing>();
// Assert
Assert.NotNull(retrivedThing);
Assert.Equal(retrivedThing, thing);
}