create a file main.go

package main
k
func main(){}

Then try the following

% go build
./main.go:2:1: syntax error: non-declaration statement outside function body
% go vet
vet: ./main.go:2:1: expected declaration, found k
% go test
./main.go:2:1: syntax error: non-declaration statement outside function body 

So far so good everything consistent except for the vet: thingy in the beginning of the vet output instead of ./main.go:2:1: vet: expected declaration, found k but I let that slight for now :) Most important for vscode and my terminal is path consistency namely every path has at least one / in it

Now do go test again but rename the file to main_test.go

% go test
main_test.go:2:1: expected declaration, found k

Here we break the internet because vscode and terminals can't figure out that it's a path because ./ is stripped so you can't click on it anymore to open the src file in that location.

(ref: https://groups.google.com/forum/#!topic/golang-dev/ZbTYwDSlGvQ)

EDIT:

I think we need to start with just go vet consistency in test vs non test files to begin with.

output go vet on a .go file vs _test.go file

% go vet
vet: ./main.go:11:1: expected declaration, found k (and 1 more errors)

% go vet
main_test.go:11:1: expected declaration, found k
main_test.go:43:2: expected declaration, found err

end goal should be this in all cases, to make vet consistent with itself and other tools :)

./main.go:11:1: vet: expected declaration, found k