Proposal: PoC for Bats integration tests

[chanwit]

Swarm requires integration tests (#376) and @aluzzardi suggested in #400 that Swarm should use Bats to run this kind of tests. This PR follows Docker Machine's way of testing (docker/machine#615). It proposes a PoC to perform integration tests for Swarm.

There are 2 tests under test/integration directory:

1. A test to match version and gitcommit.
2. A test that uses timeout to check if Swarm fail to connect to a non-existed node.

To run these tests:

1. Compile swarm and make sure that there's the binary in $GOBIN.
2. Run bats test/integration

/cc @vieux

Signed-off-by: Chanwit Kaewkasi [email protected]

[bacongobbler]

should the directory be renamed to integration-cli(similar to docker) or test/integration? That seems to be the common directory structure, though really that's a matter of whether the dress is white and gold or blue and black.

[chanwit]

@bacongobbler Thank you for your comments. I just follow how Docker Machine does for its testing directory. I am fine to change it to any better name.

[aluzzardi]

Thanks @chanwit, this is really awesome!

I would probably do test/integration, I imagine eventually we'd have test/stress and so on.

[chanwit]

done renaming to test/integration.

[aluzzardi]

Thanks!