Test overlay overlays files in bats

Bats runs functional tests, lets ensure the repo is cloned
and extracted to the desired location.  The unit tests mock
RunCommand, which prevents any git commands from actually
executing.

test/integration/test_cli.bats

@@ -19,6 +19,14 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 # DEALINGS IN THE SOFTWARE.
 
+setup() {
+  GILT_CLONED_ETCD_REPO=~/.gilt/clone/cache/https---github.com-retr0h-ansible-etcd.git-77a95b7
+  GILT_DST_ETCD_REPO=/tmp/retr0h.ansible-etcd
+
+  rm -rf ${GILT_CLONED_ETCD_REPO}
+  rm -rf ${GILT_DST_ETCD_REPO}
+}
+
 @test "invoke gilt without arguments prints usage" {
 	run go run main.go
 
@@ -40,6 +48,14 @@
 	run bash -c 'cd test; go run ../main.go overlay'
 
 	[ "$status" -eq 0 ]
+
+	run stat ${GILT_CLONED_ETCD_REPO}
+
+	[ "$status" = 0 ]
+
+	run stat ${GILT_DST_ETCD_REPO}
+
+	[ "$status" = 0 ]
 }
 
 @test "invoke gilt overlay subcommand with filename flag" {