when no one else is looking at you.
when you are not accountable to your actions.
when you have the choice, a rather ‘safe’ one.
It is in these situations, you may decide to act honestly, with integrity and follow your ethics. You will be tempted to act otherwise, the offer on the other side will be quite lucrative. The real character is tested only then. A small slip leads to a crack initially which only grows with time with seepage of water through it. Take care of your honesty, it is too precious to loose.