fix(bats-tests): lifecycle hook injection test failing (#1095)

Co-authored-by: xmbhasin <xmbhasin@users.noreply.github.com>

test/bats/2-deploy-with-more-options.bats

@@ -105,7 +105,7 @@ setup() {
     --set jenkins.nodeSelector.batstest=yep \
     --set jenkins.image="jenkins/jenkins:2.462.3-lts" \
     --set jenkins.imagePullPolicy="IfNotPresent" \
-    --set jenkins.lifecycle.preStop.command='["echo bats test"]' \
+    --set jenkins.lifecycle.preStop.exec.command="{echo bats-test}" \
     --set jenkins.backup.makeBackupBeforePodDeletion=false \
     --set jenkins.backup.image=quay.io/jenkins-kubernetes-operator/backup-pvc:e2e-test \
     chart/jenkins-operator --wait
@@ -139,16 +139,15 @@ setup() {
 }
 
 #bats test_tags=phase:helm,scenario:more-options
-@test "2.5  Helm: check lifecycle" {
+@test "2.12  Helm: check lifecycle hook injection" {
   [[ ! -f "chart/jenkins-operator/deploy.tmp" ]] && skip "Jenkins helm chart have not been deployed correctly"
 
-  run ${KUBECTL} get pod jenkins-jenkins -o jsonpath={.spec.containers[0].lifecycle.preStop.exec.command[0]}
+  run try "at most 20 times every 10s to get pods named 'jenkins-jenkins' and verify that '.spec.containers[?(@.name==\"jenkins-master\")].lifecycle.preStop.exec.command[0]' is 'echo bats-test'"
   assert_success
-  assert_output "echo 'bats test'"
 }
 
 #bats test_tags=phase:helm,scenario:more-options
-@test "2.12 Helm: check node selector again" {
+@test "2.13 Helm: check node selector again" {
   [[ ! -f "chart/jenkins-operator/deploy.tmp" ]] && skip "Jenkins helm chart have not been deployed correctly"
 
   NODENAME=$(${KUBECTL} get pod jenkins-jenkins -o jsonpath={.spec.nodeName})
@@ -159,17 +158,32 @@ setup() {
 }
 
 #bats test_tags=phase:helm,scenario:more-options
-@test "2.13 Helm: check jenkins-plugin-cli command again" {
+@test "2.14 Helm: check jenkins-plugin-cli command again" {
   [[ ! -f "chart/jenkins-operator/deploy.tmp" ]] && skip "Jenkins helm chart have not been deployed correctly"
 
-  run ${KUBECTL} logs -c jenkins-master jenkins-jenkins
+  # Check logs for jenkins-plugin-cli command with retry.
+  # Retry is necessary here to reduce flakiness due to additional delays
+  # from reconciling and recreating jenkins pods after helm upgrade.
+  # We assert success only after the retry loop to reduce noise.
+  LOG_CMD="${KUBECTL} logs -c jenkins-master jenkins-jenkins"
+
+  EXPECTED_LOG_LINE_BASE_PLUGINS="jenkins-plugin-cli --verbose --latest true -f /var/lib/jenkins/base-plugins.txt"
+  retry 10 10 "${LOG_CMD} | grep -e '${EXPECTED_LOG_LINE_BASE_PLUGINS}'"
+
+  run $LOG_CMD
   assert_success
-  assert_output --partial 'jenkins-plugin-cli --verbose --latest true -f /var/lib/jenkins/base-plugins.txt'
+  assert_output --partial "${EXPECTED_LOG_LINE_BASE_PLUGINS}"
-  assert_output --partial 'jenkins-plugin-cli --verbose --latest true -f /var/lib/jenkins/user-plugins.txt'
+
+  EXPECTED_LOG_LINE_USER_PLUGINS="jenkins-plugin-cli --verbose --latest true -f /var/lib/jenkins/user-plugins.txt"
+  retry 10 10 "${LOG_CMD} | grep -e '${EXPECTED_LOG_LINE_USER_PLUGINS}'"
+
+  run $LOG_CMD
+  assert_success
+  assert_output --partial "${EXPECTED_LOG_LINE_USER_PLUGINS}"
 }
 
 #bats test_tags=phase:helm,scenario:more-options
-@test "2.14 Helm: clean" {
+@test "2.15 Helm: clean" {
   [[ ! -f "chart/jenkins-operator/deploy.tmp" ]] && skip "Jenkins helm chart have not been deployed correctly"
 
   run ${HELM} uninstall options --wait

test/bats/test_helper.bash

@@ -15,3 +15,36 @@ _common_setup() {
 get_latest_chart_version() {
     helm search repo jenkins-operator/jenkins --versions | awk 'NR==2 {print $2}' | sed 's/v//'
 }
+
+retry() {
+    # based on bats-detik's try function
+
+    if [[ $# -ne 3 ]]; then
+        echo "[ERROR] Usage: retry <times> <delay> <command>"
+        return 1
+    fi
+
+    local times="$1"
+    local delay="$2"
+    local cmd="$3"
+
+    code=0
+    for ((i=1; i<=times; i++)); do
+
+        # Run the command
+        eval "$cmd" && code=$? || code=$?
+
+        # Break the loop prematurely?
+        if [[ "$code" == "0" ]]; then
+            break
+        elif [[ "$i" != "1" ]]; then
+            code=3
+            sleep "$delay"
+        else
+            code=3
+        fi
+    done
+
+    ## Error code
+    return $code
+}