Elasticsearch: Update tests to clean up test data and index

This ps adds a function for cleaning up the test data used to
verify Elasticsearch is functioning properly. It removes the test
index created and populated with test data to ensure the resulting
elasticsearch cluster is clean and does not contain random data

Change-Id: Ibdeb90e3f3b6307bf16c68469556bef256ed2d78

elasticsearch/templates/bin/_helm-tests.sh.tpl

@@ -15,10 +15,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */}}
 
-
 set -ex
 
-function create_index () {
+function create_test_index () {
   index_result=$(curl -K- <<< "--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}" \
   -XPUT "${ELASTICSEARCH_ENDPOINT}/test_index?pretty" -H 'Content-Type: application/json' -d'
   {
@@ -39,9 +38,9 @@ function create_index () {
   fi
 }
 
-function insert_test_data () {
+function insert_data_into_test_index () {
   insert_result=$(curl -K- <<< "--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}" \
-  -XPUT "${ELASTICSEARCH_ENDPOINT}/sample_index/sample_type/123/_create?pretty" -H 'Content-Type: application/json' -d'
+  -XPUT "${ELASTICSEARCH_ENDPOINT}/test_index/sample_type/123/_create?pretty" -H 'Content-Type: application/json' -d'
   {
       "name" : "Elasticsearch",
       "message" : "Test data text entry"
@@ -56,8 +55,7 @@ function insert_test_data () {
   fi
 }
 
-
-function check_hits () {
+function check_hits_on_test_data () {
   total_hits=$(curl -K- <<< "--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}" \
   "${ELASTICSEARCH_ENDPOINT}/_search?pretty" -H 'Content-Type: application/json' -d'
   {
@@ -79,6 +77,13 @@ function check_hits () {
   fi
 }
 
-create_index
-insert_test_data
-check_hits
+function remove_test_index () {
+  echo "Deleting index created for service testing"
+  curl -K- <<< "--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}" \
+  -XDELETE "${ELASTICSEARCH_ENDPOINT}/test_index"
+}
+
+create_test_index
+insert_data_into_test_index
+check_hits_on_test_data
+remove_test_index