diff --git a/tests/DatabaseTest.php b/tests/DatabaseTest.php index 7819b46ab8..5a9a563a5d 100644 --- a/tests/DatabaseTest.php +++ b/tests/DatabaseTest.php @@ -22,6 +22,12 @@ abstract class DatabaseTest extends TestCase /** * Get database connection. + * + * This function is executed before each test in order to get a database connection that can be used by tests. + * If no prior connection is available, it tries to create one using the USER, PASS and DB environment variables. + * + * If it could not connect to the database, the test is skipped. + * * @return PHPUnit_Extensions_Database_DB_IDatabaseConnection * @see https://phpunit.de/manual/5.7/en/database.html */