Refactor test/helper.sh and test/utils.go

[sawsa307]

• Move test/utils.go to test/utils/utils.go.
• Break test/helper.sh into separate functions in test/helpers, and source them from test/helper.sh.

[sawsa307]

/assign @bowei

[sawsa307]

Don't the new files need to be sourced from the helpers.sh?

Yes they are sourced, but I think they are masked by the deletion. If you expand the change in test/helper.sh, at the bottom you can find:

for f in $(find test/helpers -name *.sh); do
    source ${f}
done

[bowei]

for something like a library files -- you should source them explicitly instead of using find.