Store test results for CircleCI Test Insights

The Insights need results in the JUnit XML format.
This can be achieved by using the 'cth_surefire' hook.
It is enabled for OTP 25, and not for OTP 24, because on the latter
the test would become so slow, that the build would take more than an
hour. There is no such issue on Erlang/OTP 25.

.circleci/template.yml

@@ -560,11 +560,16 @@ jobs:
         type: boolean
         description: Erlang distribution with TLS enabled
         default: false
+      store_results:
+        type: boolean
+        description: Collect and store test results in JUnit XML format for Insights
+        default: false
     environment:
       TESTSPEC: <<parameters.spec>>
       PRESET: <<parameters.preset>>
       DB: <<parameters.db>>
       TLS_DIST: <<parameters.tls_dist>>
+      STORE_RESULTS: <<parameters.store_results>>
       SKIP_AUTO_COMPILE: true
       KEEP_COVER_RUNNING: 1
     steps:
@@ -581,8 +586,23 @@ jobs:
       - run:
           name: Run Big Tests
           command: |
-            ./tools/test.sh -p $PRESET -s false
+            if $STORE_RESULTS; then
+              ./tools/test.sh -p $PRESET -h cth_surefire -s false
+            else
+              ./tools/test.sh -p $PRESET -s false
+            fi
           no_output_timeout: 40m
+      - when:
+          condition: <<parameters.store_results>>
+          steps:
+            - run:
+                when: always
+                name: Copy test results for Insights
+                command: |
+                  cp big_tests/ct_report/*/junit_report.xml .
+            - store_test_results:
+                when: always
+                path: junit_report.xml
       - run_coverage_analysis
       - run:
           name: Build Failed - Logs
@@ -756,6 +776,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: mysql_redis_25
           executor: otp_25_mysql_redis
@@ -764,6 +785,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: dynamic_domains_mysql_redis_25
           spec: dynamic_domains.spec
@@ -773,6 +795,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: pgsql_mnesia_24
           executor: otp_24_pgsql_redis
@@ -789,6 +812,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: dynamic_domains_pgsql_mnesia_25
           spec: dynamic_domains.spec
@@ -798,6 +822,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: dynamic_domains_pgsql_mnesia_24
           spec: dynamic_domains.spec
@@ -816,6 +841,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: dynamic_domains_mssql_mnesia_25
           spec: dynamic_domains.spec
@@ -826,6 +852,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: riak_mnesia_24
           executor: otp_24_riak_redis
@@ -853,6 +880,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       - big_tests_in_docker:
           name: elasticsearch_and_cassandra_25
           executor: otp_25_elasticsearch_cassandra
@@ -862,6 +890,7 @@ workflows:
           requires:
             - otp_25_docker
           filters: *all_tags
+          store_results: true
       # ============= DOCKER IMAGE BUILD & UPLOAD =============
       - docker_image:
           name: docker_build_and_ship