Command to run unit test under cursor or re-run previous test

[mislav]

Is your feature request related to a problem? Please describe.
The Go: Test Function At Cursor command is great, but running it repeatedly stops being useful as soon as I switch to the implementation or to another piece of code in the _test.go file which isn't under a test function. At this point I have to switch to the Go: Test Previous command to keep re-running the test I'm interested in. Mentally keeping track of where I am in my code so I can activate either the first command or the second command can be exhausting and error prone.

Describe the solution you'd like
A new command to:

• run the test function at cursor, if one exists;
• otherwise, re-run previous test.

Describe alternatives you've considered
I've bound a single keyboard shortcut for the Go: Test Function At Cursor command when I'm in _test.go files and the Go: Test Previous command when in regular .go files. This covers switching between test and implementation, but doesn't handle the case when the cursor is in a _test.go file but not under any test function.

[gopherbot]

Change https://golang.org/cl/320769 mentions this issue: src/goTest: Add command Test Function At Cursor or Test Previous