diff: Add sort logic to sort diff ouput irrespective of output format…

[PuneethaPai]

…(default/json/md)

• ❗ I have followed the Contributing to DVC checklist.

Fixes one of the task mentioned in Issue: #2982

• consider sorting default output

I have sorted output irrespective of output format to maintain consistency.

[efiop]

Thanks for the PR @PuneethaPai ! 🙏 Please see some comments above.

[PuneethaPai]

Just a small change in test code to pass dict copy instead of original diff dict.

In python both list and dict when modified by called function, it gets modified in original function as well. (Pass by value, Pass by reference scenario)

In test I was passing diff dict which could have lead to bug, hence now I pass copy of this. (Thus even if the copy gets modified original diff dict stays the same.)

[efiop]

Thank you so much @PuneethaPai ! 🙏

[jorgeorpinel]

Hi! Does this change the output in the examples of https://dvc.org/doc/command-reference/diff perhaps?

Esp. in Comparing tags or branches and https://dvc.org/doc/command-reference/diff#example-using-different-output-formats I guess.

[efiop]

@jorgeorpinel Good catch! Adjusted in iterative/dvc.org@ee2182a . Thank you!

[jorgeorpinel]

Thanks! That was a quick one 🙂