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_scale_change.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source $(dirname $0)/fnupdate_utils.sh
+
+env=python-$(date +%N)
+fn=hellopython-$(date +%N)
+ROOT=$(dirname $0)/../../..
+
+targetMinScale=2
+targetMaxScale=6
+targetCpuPercent=60
+
+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 --minscale 1 --maxscale 4 --executortype newdeploy --mincpu 20 --maxcpu 100 --minmemory 128 --maxmemory 256
+
+log "Creating route for function $fn"
+fission route create --function ${fn} --url /${fn} --method GET
+
+log "Waiting for update to catch up"
+sleep 5
+
+timeout 60 bash -c "test_fn $fn 'world'"
+
+log "Updating function scale and target CPU percent for $fn"
+fission fn update --name $fn --env $env --code $ROOT/examples/python/hello.py --minscale $targetMinScale --maxscale $targetMaxScale --targetcpu $targetCpuPercent --executortype newdeploy --mincpu 20 --maxcpu 100 --minmemory 128 --maxmemory 256
+
+log "Waiting for update to catch up"
+sleep 5
+
+#If variable not used, shell assumes 'function' to be a real function
+func=function
+actualMinScale=$(kubectl -n default get $func $fn -ojsonpath='{.spec.InvokeStrategy.ExecutionStrategy.MinScale}')
+actualMaxScale=$(kubectl -n default get $func $fn -ojsonpath='{.spec.InvokeStrategy.ExecutionStrategy.MaxScale}')
+actualTargetCPU=$(kubectl -n default get $func $fn -ojsonpath='{.spec.InvokeStrategy.ExecutionStrategy.TargetCPUPercent}')
+
+if [ "$actualMinScale" -ne "$targetMinScale" ]
+then
+  log "Failed to update min scale for function"
+  exit 1
+fi
+
+if [ "$actualMaxScale" -ne "$targetMaxScale" ]
+then
+  log "Failed to update max scale for function"
+  exit 1
+fi
+
+if [ "$actualTargetCPU" -ne "$targetCpuPercent" ]
+then
+  log "Failed to update target CPU for the function"
+  exit 1
+fi
+
+timeout 60 bash -c "test_fn $fn 'world'"