Test the SUM Function

 To test the SUM function macro provided earlier, you need to follow the steps outlined in my previous response. However, if you're asking how to verify that the macro works correctly without running it, you can review the code to ensure it covers the necessary scenarios and handles errors appropriately.

Here's a summary of what the macro does:

Prompts the user to select a range using an InputBox.

Checks if the user canceled the input or entered an invalid range.

Verifies if the selected range contains only numeric values.

Calculates the sum of the selected range using the SUM() function.

Displays the result in a message box.

To ensure the macro works as intended, you should:

Verify that the code accurately represents your requirements.

Check that error handling is in place for potential issues.

Test the macro with different types of ranges, including both valid and invalid scenarios.

Confirm that the message boxes provide clear and informative feedback to the user.

Once you're satisfied with the code, you can proceed to run the macro in your Excel workbook as described in the previous response.