void RobotService_Left_Placed_Allowed(Facing start, Facing expected, [Frozen]Mock<IRobot> mockRobot, RobotService sut)
{
mockRobot.SetupProperty(x => x.Placed, true);
mockRobot.SetupProperty(x => x.F, start);
sut.Left();
mockRobot.VerifySet(r => r.F = expected, Times.Once());
}
void RobotService_Left_NotPlaced_Ignored(Facing start, Facing expected, [Frozen]Mock<IRobot> mockRobot, RobotService sut)
{
mockRobot.SetupProperty(x => x.Placed, false);
mockRobot.SetupProperty(x => x.F, start);
sut.Left();
mockRobot.VerifySet(r => r.F = expected, Times.Never());
}