I have crafted Jenkins job mediawiki-core-code-coverage-php7 which runs the PHPUnit suite with phpdbg on Jessie and with Zend PHP 7.0. It fails with a database error though:
https://integration.wikimedia.org/ci/job/mediawiki-core-code-coverage-php7/7/
Mon Oct 10 8:43:43 UTC 2016 integration-slave-jessie-1004 jenkins_u0_mw-unittest_ Block::newLoad [Null] 1 no such table: unittest_ipblocks SELECT * FROM unittest_ipblocks WHERE ipb_address = 'UTBlockee' Mon Oct 10 8:43:57 UTC 2016 integration-slave-jessie-1004 jenkins_u0_mw-unittest_ User::loadFromDatabase [Null] 1 no such table: unittest_user SELECT * FROM unittest_user WHERE user_id = '2' LIMIT 1
2016-10-10 08:43:57 integration-slave-jessie-1004 jenkins_u0_mw-unittest_: [2605549f1fb07ed4ac21da84] [no req] DBQueryError from line 1037 of includes/libs/rdbms/database/Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading? Query: SELECT * FROM unittest_user WHERE user_id = '2' LIMIT 1 Function: User::loadFromDatabase Error: 1 no such table: unittest_user #0 includes/libs/rdbms/database/Database.php(895): Database->reportQueryError(string, integer, string, string, boolean) #1 includes/libs/rdbms/database/Database.php(1237): Database->query(string, string) #2 includes/libs/rdbms/database/Database.php(1305): Database->select(string, array, array, string, array, array) #3 includes/user/User.php(1236): Database->selectRow(string, array, array, string, array) #4 includes/user/User.php(480): User->loadFromDatabase(integer) #5 includes/libs/objectcache/WANObjectCache.php(880): User->{closure}(boolean, integer, array, NULL) #6 includes/libs/objectcache/WANObjectCache.php(997): WANObjectCache->{closure}(boolean, integer, array, NULL) #7 includes/libs/objectcache/WANObjectCache.php(883): WANObjectCache->doGetWithSetCallback(string, integer, Closure, array, NULL) #8 includes/user/User.php(494): WANObjectCache->getWithSetCallback(string, integer, Closure, array) #9 includes/user/User.php(436): User->loadFromCache() #10 includes/user/User.php(396): User->loadFromId(integer) #11 includes/user/User.php(2088): User->load() #12 tests/phpunit/includes/BlockTest.php(18): User->getId() #13 tests/phpunit/MediaWikiTestCase.php(388): BlockTest->addDBData() #14 vendor/phpunit/phpunit/src/Framework/TestSuite.php(747): MediaWikiTestCase->run(PHPUnit_Framework_TestResult) #15 vendor/phpunit/phpunit/src/Framework/TestSuite.php(747): PHPUnit_Framework_TestSuite->run(PHPUnit_Framework_TestResult) #16 vendor/phpunit/phpunit/src/Framework/TestSuite.php(747): PHPUnit_Framework_TestSuite->run(PHPUnit_Framework_TestResult) #17 vendor/phpunit/phpunit/src/TextUI/TestRunner.php(440): PHPUnit_Framework_TestSuite->run(PHPUnit_Framework_TestResult) #18 vendor/phpunit/phpunit/src/TextUI/Command.php(149): PHPUnit_TextUI_TestRunner->doRun(PHPUnit_Framework_TestSuite, array) #19 vendor/phpunit/phpunit/src/TextUI/Command.php(100): PHPUnit_TextUI_Command->run(array, boolean) #20 tests/phpunit/phpunit.php(133): PHPUnit_TextUI_Command::main() #21 maintenance/doMaintenance.php(110): PHPUnitMaintClass->execute() #22 tests/phpunit/phpunit.php(163): require(string) #23 {main}
The cloned tables with a unittest_ prefix are not available, either because they are not cloned properly or the test suite somehow switch to a new database connection which would not have the tables available (they are temporary ones).