message: test consume on topic before producing test data
  fixes
diff: @@ -83,6 +83,12 @@ function validate_cluster_stable() {
  # $STABLE_FLUVIO topic create ${STABLE_TOPIC}-delete
  ci_check;
  + # Validate consume on topic before produce
  + # https://github.com/infinyon/fluvio/issues/1819
  + echo "Validate consume on \"${STABLE_TOPIC}\" before producing"
  + $STABLE_FLUVIO consume -B -d ${STABLE_TOPIC} 2>/dev/null
  +
  + echo "Producing test data to ${STABLE_TOPIC}"
  cat data1.txt.tmp | $STABLE_FLUVIO produce ${STABLE_TOPIC}
  # cat data1.txt.tmp | $STABLE_FLUVIO produce ${STABLE_TOPIC}-delete
  ci_check;
  @@ -152,9 +158,15 @@ function validate_upgrade_cluster_to_prerelease() {
  echo "Create test topic: ${PRERELEASE_TOPIC}"
  $FLUVIO_BIN_ABS_PATH topic create ${PRERELEASE_TOPIC}
  + # Validate consume on topic before produce
  + # https://github.com/infinyon/fluvio/issues/1819
  + echo "Validate consume on \"${PRERELEASE_TOPIC}\" before producing"
  + $FLUVIO_BIN_ABS_PATH consume -B -d ${PRERELEASE_TOPIC} 2>/dev/null
  +
  #kubectl get pods
  #kubectl get spu
  + echo "Producing test data to ${PRERELEASE_TOPIC}"
  cat data2.txt.tmp | $FLUVIO_BIN_ABS_PATH produce ${PRERELEASE_TOPIC}
  @@ -170,10 +182,15 @@ function validate_upgrade_cluster_to_prerelease() {
  exit 1
  fi
  + # Validate consume on topic before produce
  + # https://github.com/infinyon/fluvio/issues/1819
  + echo "Validate consume on \"${STABLE_TOPIC}\" before producing"
  + $FLUVIO_BIN_ABS_PATH consume -B -d ${STABLE_TOPIC} 2>/dev/null
  +
  # Exercise older topics
  + echo "Producing test data to ${STABLE_TOPIC}"
  cat data2.txt.tmp | $FLUVIO_BIN_ABS_PATH produce ${STABLE_TOPIC}
  -
  echo "Validate v${STABLE} test data w/ ${TARGET_VERSION} CLI matches expected data AFTER upgrading cluster + CLI to v${TARGET_VERSION}"
  $FLUVIO_BIN_ABS_PATH consume -B -d ${STABLE_TOPIC} | tee output.txt.tmp
  