Merge branch 'improve-tests' into add-static-code-analysis

.woodpecker/.database_checks.yml

@@ -40,6 +40,7 @@ steps:
   composer_install:
     image: friendicaci/php${PHP_MAJOR_VERSION}:php${PHP_VERSION}
     commands:
+      - mkdir addon # create empty addon folder to appease composer
       - export COMPOSER_HOME=.composer
       - ./bin/composer.phar validate
       - ./bin/composer.phar install --prefer-dist

.woodpecker/.phpunit.yml

@@ -38,6 +38,7 @@ steps:
   composer_install:
     image: friendicaci/php${PHP_MAJOR_VERSION}:php${PHP_VERSION}
     commands:
+      - mkdir addon # create empty addon folder to appease composer
       - export COMPOSER_HOME=.composer
       - ./bin/composer.phar validate
       - ./bin/composer.phar install --prefer-dist