ConnectionUnitTest::testOpenClose in core/modules/simpletest/tests/database_test.test

Tests Database::closeConnection() without query.

ConnectionUnitTest::testOpenQueryClose in core/modules/simpletest/tests/database_test.test

Tests Database::closeConnection() with a query.

ConnectionUnitTest::testOpenQueryPrefetchClose in core/modules/simpletest/tests/database_test.test

Tests Database::closeConnection() with a query and custom prefetch method.

ConnectionUnitTest::testOpenSelectQueryClose in core/modules/simpletest/tests/database_test.test

Tests Database::closeConnection() with a select query.

Database::removeConnection in core/includes/database/database.inc

Remove a connection and its corresponding connection information.

DatabaseConnectionTestCase::testConnectionClosing in core/modules/simpletest/tests/database_test.test

Tests the closing of a database connection.

db_close in core/includes/database/database.inc

Closes the active database connection.