Unclear message when executing command from empty list

[wenxin-c]

Describe the bug

When the transaction list is empty and delete items from the list, the error message is index out of bound, however, users might not be aware that the list is empty, causing confusion. Hence, the error is not precise. This happens to mark command when there is no such items.

To Reproduce Steps to reproduce the behavior:

1. Launch program
2. Input command: delete 1

Expected behavior

Message showing the list is empty, nothing to be deleted

Actual behaviour

Index is out of bound

Screenshots

Additional context

Add any other context about the problem here.

[soc-pe-bot]

Team's Response

Thank you for raising this up. However, the error message does correctly indicate the problem with the input, which is that the index is out of bounds. A list being empty also means that the command delete 1 is out of bounds, which clearly shows the issue with their input.

Items for the Tester to Verify

❓ Issue response

Team chose [response.Rejected]

• I disagree

Reason for disagreement: Thank you for the reponse, however, I disgree with this.

The error message is not specific enough and does not pinpoint the cause of the issue. More importantly, no matter what index users use, the error message will always be index out of bound in this situation. However, the real reason behind this arror is actually the list being empty. Users will end up wasting time and effort trying all possible indexes but unfortunately all of them will report index out of bound error. Hence, it will be very difficult for them to debug. This will cause huge confusion and frustration for users.

Based on the module website, the error message must be specific enough to pinpoint the exact error, however, this error message does not pinpoint the exact error and will cause even more confusion for users.

Therefore, this bug is qualified to be a severity.Low feature flaw as it causes frustration and confusion to users.

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