[feat] Print the run report location at the end of a session

[jgphpc]

Closes #1947

[pep8speaks]

Hello @jgphpc, Thank you for updating!

Cheers! There are no PEP8 issues in this Pull Request!Do see the ReFrame Coding Style Guide

Comment last updated at 2021-07-14 20:45:07 UTC

[ekouts]

I am not sure this was what @victorusu originally asked for in issue #1947. Victor maybe you can shed some light:

1. I think he meant to print something like this
   Rerun the failed tests using '--restore-session <report-file> -n <name1> -p <partition1> --system <system> -n <name2> -p <partition2> ...'. Or we can make it simpler with
   Rerun the failed tests using '--restore-session --failed -r'.
2. I don't agree to print it only in the failure statistic, when we pass --failure-stats. This is not really part of the statistics and I prefer that we print it always. What do you guys think?

[vkarak]

I agree with @ekouts. I don't think that this is what @victorusu requested in the corresponding issue. I interpret it as a simple line at the vey end (after the failure statistics) saying the something like "Rerun all failed tests with reframe --restore-session=report-file --failed. I personally also thing that the report-file is not needed. But @victorusu, please explain more what's your feature request is about.

[codecov-commenter]

Codecov Report

Merging #2016 (4e434cd) into master (9fad84c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #2016   +/-   ##
=======================================
  Coverage   86.74%   86.74%           
=======================================
  Files          52       52           
  Lines        9269     9270    +1     
=======================================
+ Hits         8040     8041    +1     
  Misses       1229     1229           

Impacted Files	Coverage Δ
reframe/frontend/cli.py	76.00% <100.00%> (+0.04%)	⬆️

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[victorusu]

lgtm

[vkarak]

I updated this PR to print the report file always at the end of the session. I am against adding a Rerun with type of message, cos it introduces unnecessary complexity to the implementation. We report the file here, and somebody can use it with the --restore-session option.

PR comments addressed