[ 2449753 ] Combinations of key patterns and key names

[HolQue]

Three examples: (1) and (2) are fine, w.r.t. (3) I have doubts

(1)

keyPattern = r'^\d+$'

together with

"ABC" : "value"

causes

Error: 'Error: Key name 'ABC' is invalid. Expected format: '^\d+$''!

(like expected)

(2)

keyPattern = r'^\d*$'

together with

"ABC" : "value"

causes
Error: 'Error: Key name 'ABC' is invalid. Expected format: '^\d*$''!

(like expected)

(3)

keyPattern = r'^\d*$'

together with

"" : "value"

causes

DotDict({'': 'value'})

But an empty key name should not be accepted. The question here is: How to detect, that a regular expression would allow an empty string?

This might help:

if re.fullmatch(pattern, ""):
    print("Matches empty string")
else:
    print("Does not match empty string")

In first case the JsonPreprocessor should raise an exception about an invalid 'keyPattern'.

[HolQue]

Retest successful. Issue can be closed.

[test-fullautomation]

part of 0.14.1