Haskell: random tests should not be in the sample tests

Java Translation

Groovy Translation

JavaScript: failure messages are confusing and extremely unhelpful. For example, one of assertions complains about a missing # character while it checks something totally different.

Python doesn't test inputs that only contain spaces. Furthermore, the description is at best (I think it disagrees with the ref solution and isn't ambiguous, '#' is not empty) ambiguous about what that should return as a string containing only '#' is not empty, and yet the ref solution says the result should be False.

Random tests in following languages do not generate negative numbers:

• COBOL ( would require changing INPUT-VAR from 9(06) to S9(06), same goes for RESULT from X(06) to X(07) to accommodate for the negative sign; so all existing solutions would be invalidated )

• Java

• Kotlin

• Python

Empty line ?
Changes ?
Output ?

In the description, it says:

If the final result is longer than 140 characters, it must return false.

If the input or the result is an empty string it must return false.

While implementing my solution in Scala, I initially returned "false" as a string for this case. However, the tests were expecting an empty string instead. I suggest updating the description to specify that false should be represented as an empty string in the output.

python translation

There should be tests of single-character strings like #, A and a to invalidate certain solutions

C# translation ready! Please review and approve.

I guess tests should also check fo boundary values:

• an input of 1 non-whitespace letter
• an input with 139 non-whitespace letters
• an input with 140 non-whitespace letters