Adding benchmark to CI (#174)

Adding benchmark to CI

.travis.yml

@@ -7,7 +7,7 @@ cache:
 matrix:
   include:
     - php: 7.2
-      env: PREFER_LOWEST="" DB=mysql RUN_PHPSTAN=1 RUN_CSCHECK=1 RUN_REQUIRECHECKER=1
+      env: PREFER_LOWEST="" DB=mysql RUN_PHPSTAN=1 RUN_CSCHECK=1 RUN_REQUIRECHECKER=1 RUN_PERF_TEST=1
       services:
         - mysql
     - php: 7.3
@@ -98,6 +98,21 @@ script:
   if [ "$RUN_REQUIRECHECKER" == "1" ] ; then
     composer require-checker
   fi
+- |
+  if [ "$RUN_PERF_TEST" == "1" ] ; then
+    echo "***** Running PHPBENCH on current branch *****" && \
+    ./phpbench.dist.sh run --tag=current_pr --store
+  fi
+after_success:
+  - |
+    if [ "$RUN_PERF_TEST" == "1" ] && [ "${TRAVIS_PULL_REQUEST_BRANCH:-$TRAVIS_BRANCH}" != "master" ] ; then
+      git fetch --unshallow && \
+      git checkout master && \
+      composer update && \
+      echo "***** Running PHPBENCH on master branch for comparison *****" && \
+      ./phpbench.dist.sh run --tag=master --store && \
+      ./phpbench.dist.sh report --uuid=tag:current_pr --uuid=tag:master --report='{extends: compare, compare: tag}'
+    fi
 after_script:
 - if [ "$COVERALLS" = "true" ] ; then ./vendor/bin/php-coveralls -v; fi
 - if [ "$COVERALLS" = "true" ] ; then vendor/bin/couscous travis-auto-deploy --php-version=7.1 -vvv; fi

phpbench.dist.sh

@@ -8,4 +8,4 @@ export DB_USERNAME=root
 export DB_PASSWORD=
 export DB_NAME=tdbm_benchmark
 
-vendor/bin/phpbench
+vendor/bin/phpbench "$@"

tests/Performance/ManyToOneBench.php

@@ -120,7 +120,7 @@ private static function recursiveDelete(string $str): bool
         return false;
     }
 
-    private function getConnection(): Connection
+    private static function getConnection(): Connection
     {
         return ConnectionFactory::createConnection(
             getenv('DB_DRIVER') ?: null,