set serialize_precision to 17, current PHP default

Follow up to:
https://gerrit.wikimedia.org/r/#/c/249018/

Bug: T116683
Change-Id: I6e8dfab473ae2c18e68c8e4360159c9cc0e09758

diff --git a/tests/phpunit/phpunit.php b/tests/phpunit/phpunit.php
index fab6dfb..aaa7751 100755 (executable)
--- a/tests/phpunit/phpunit.php
+++ b/tests/phpunit/phpunit.php
@@ -117,7 +117,7 @@ class PHPUnitMaintClass extends Maintenance {
                // Bug T116683 serialize_precision of 100
                // may break testing against floating point values
                // treated with PHP's serialize()
-               ini_set( 'serialize_precision', 14 );
+               ini_set( 'serialize_precision', 17 );
        }
 
        public function execute() {