Keywords less then 6 characters are sometimes repeated twice, so remember to check for that as well. Also, a password doesn't contain spaces, so be sure to check your input.

So is the condition "keywords less then 6 characters" checked before, or after spaces are removed?

There are no tests with double name without digit or special char

There are no tests for passwords with one or two letters capitalized without special char or digit

For small ns this shouldn't be a problem for almost all inputs, so it can be tested.

.

But I definetely see the problem in that your code sometimes fails other times doesn't. I have added a fixed test case that should catch this problem up front.

This solution sometimes crashes with an overflow. If hte input in those cases is valid, there should be corresponding fixed tests.

Why input is string not a complex number?

The tests does not require checking for |z| < 2 for exactly n iterations; n+10 works too. There should be fixed tests to enforce this.

Yes, will do!

You should add a sentence about Keywords with space in the description (i.e. to remove the space)