Tests for function update (#550)

Tests for updates to a function of new deployment executor type. Tests check for changes in the environment, scale, secrets etc. Also checks conversion of function executor type from new deployment to pool manager and vice versa

test/tests/test_fn_update/test_poolmgr_nd.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source $(dirname $0)/fnupdate_utils.sh
+
+ROOT=$(dirname $0)/../../..
+
+env=python-$(date +%N)
+fn=hellopython-$(date +%N)
+
+log "Creating Python env $env"
+fission env create --name $env --image fission/python-env --mincpu 20 --maxcpu 100 --minmemory 128 --maxmemory 256
+trap "fission env delete --name $env" EXIT
+
+log "Creating function $fn"
+fission fn create --name $fn --env $env --code $ROOT/examples/python/hello.py
+
+log "Creating route"
+fission route create --function $fn --url /$fn --method GET
+
+log "Waiting for router to catch up"
+sleep 5
+
+timeout 60 bash -c "test_fn $fn 'world'"
+
+log "Updating function $fn executor type to new deployment"
+fission fn update --name $fn --env $env --code $ROOT/examples/python/hello.py --minscale 1 --maxscale 4 --executortype newdeploy
+
+log "Waiting for router to catch up"
+sleep 5
+
+timeout 60 bash -c "test_fn $fn 'world'"
+
+log "Updating function $fn executor type back to pool manager"
+fission fn update --name $fn --env $env --code $ROOT/examples/python/hello.py --executortype poolmgr
+
+log "Waiting for router to catch up"
+sleep 5
+
+timeout 60 bash -c "test_fn $fn 'world'"