context= parameter to test()

[MichaelChirico]

Closes #7119

Should probably sit for a while to avoid conflicts in tests.Rraw.

[github-actions]

• HEAD=test-context stopped early for DT[,.SD] improved in #4501
  

Generated via commit 91ca268

Download link for the artifact containing the test results: ↓ atime-results.zip

Task	Duration
R setup and installing dependencies	2 minutes and 42 seconds
Installing different package versions	1 minutes and 5 seconds
Running and plotting the test cases	4 minutes and 24 seconds

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.97%. Comparing base (3acb570) to head (91ca268).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7201   +/-   ##
=======================================
  Coverage   98.97%   98.97%           
=======================================
  Files          87       87           
  Lines       16739    16740    +1     
=======================================
+ Hits        16567    16568    +1     
  Misses        172      172           

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[jangorecki]

I suspect froll.Rraw will also have conflicts