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_secret_update.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source $(dirname $0)/fnupdate_utils.sh
+
+ROOT=$(dirname $0)/../../..
+
+env=python-$(date +%N)
+fn_name=hellopython-$(date +%N)
+
+old_secret=old-secret-$(date +%N)
+new_secret=new-secret-$(date +%N)
+
+cp ../test_secret_cfgmap/secret.py.template secret.py
+sed -i "s/{{ FN_SECRET }}/${old_secret}/g" secret.py
+
+log "Creating env $env"
+fission env create --name $env --image fission/python-env
+trap "fission env delete --name $env" EXIT
+
+log "Creating secret $old_secret"
+kubectl create secret generic ${old_secret} --from-literal=TEST_KEY="TESTVALUE" -n default
+trap "kubectl delete secret ${old_secret} -n default" EXIT
+
+log "Creating NewDeploy function spec: $fn_name"
+fission spec init
+trap "rm -rf specs" EXIT
+fission fn create --spec --name $fn_name --env $env --code secret.py --secret $old_secret --minscale 1 --maxscale 4 --executortype newdeploy
+fission spec apply ./specs/
+trap "fission spec destroy" EXIT
+
+log "Creating route"
+fission route create --function ${fn_name} --url /${fn_name} --method GET
+
+log "Waiting for router to catch up"
+sleep 5
+
+log "Testing function"
+timeout 60 bash -c "test_fn $fn_name 'TESTVALUE'"
+
+log "Creating a new secret"
+kubectl create secret generic ${new_secret} --from-literal=TEST_KEY="TESTVALUE_NEW" -n default
+trap "kubectl delete secret ${new_secret} -n default" EXIT
+
+log "Updating secret and code for the function"
+sed -i "s/${old_secret}/${new_secret}/g" secret.py
+sed -i "s/${old_secret}/${new_secret}/g" specs/function-$fn_name.yaml
+
+log "Applying function changes"
+fission spec apply ./specs/
+trap "fission spec destroy" EXIT
+
+log "Waiting for changes to take effect"
+sleep 5
+
+log "Testing function for secret value"
+timeout 60 bash -c "test_fn $fn_name 'TESTVALUE_NEW'"