regular expression:match a word and a length

Question

I need help to do this regex. The sentence can't be less than 4 letters, and it can't match any of these word (test1,test2 and test3)

I know how to do each one separately but not together.

First condition ^.{4,}$

Second condition ^((?!test1|test2|test3).)*$

How to do both so that:-

1. "hello" will pass
2. "hel" will fail
3. "test1" will fail although it is more than 4 letters long
4. "test2" will fail although it is more than 4 letters long
5. "test3" will fail although it is more than 4 letters long

Thanks in advance

Answer 1

Try this one:

(?=^.{4,}$)(^((?!test1|test2|test3).)*$)

Or:

(?=^.{4,}$)(^((?!test(1|2|3)).)*$)

Or:

(?=^.{4,}$)(^((?!test[1-3]).)*$)

Answer 2

Use the below:

/^(?!.*test[1-3]).{4,}$/