Add cleanup function to test scripts (#863)

test/tests/test_internal_routes.sh

@@ -9,12 +9,24 @@ set -euo pipefail
 
 ROOT=$(dirname $0)/../..
 
+cleanup() {
+    log "Cleaning up..."
+    fission env delete --name nodejs || true
+    fission fn delete --name $f1 || true
+    fission fn delete --name $f2 || true
+}
+
+if [ -z "${TEST_NOCLEANUP:-}" ]; then
+    trap cleanup EXIT
+else
+    log "TEST_NOCLEANUP is set; not cleaning up test artifacts afterwards."
+fi
+
 log "Pre-test cleanup"
 fission env delete --name nodejs || true
 
 log "Creating nodejs env"
 fission env create --name nodejs --image fission/node-env
-trap "fission env delete --name nodejs" EXIT
 
 log "Writing functions"
 f1=f1-$(date +%s)
@@ -30,7 +42,6 @@ log "Creating functions"
 for f in $f1 $f2
 do
     fission fn create --name $f --env nodejs --code $f.js
-    trap "fission fn delete --name $f" EXIT
 done
 
 log "Waiting for router to catch up"