public void state_controller_build_fails_without_default_state() { Assert.Throws <InvalidOperationException>(() => builder.Build()); Assert.Throws <InvalidOperationException>(() => builder.Build()); builder.WithDefaultState(new TestState()); nonEmptyBuilder.WithDefaultState(new TestState()); Assert.DoesNotThrow(() => builder.Build()); Assert.DoesNotThrow(() => builder.Build()); }