there is an empty test block Candy count with no assertions in it in the full tests, which therefore looks like a failed test

Extra challenge:

• use object oriented programming

No. Please, just no. Remove the last part.

You might as well ask people to "use functional programming" to finish the kata. It's a pointless buzzword.

Wait, how did this got approved?

• Description is confusing: These are separated by at least 1 character, but can be more, so anything can be inside, but by how the example is listed it looks like that only those few are valid
• Example tests are even more confusing: should work with xxx followed by a date in the past which returns false? The individual test description are not really descriptive of the test in question either
• In general, it's not a good idea to make a kata that relies on time, because then solutions get invalid as time passes