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This commit moves worker_spi to use TAP tests. sql/worker_spi.sql is gone, replaced by an equivalent set of queries in a TAP script, without worker_spi loaded in shared_preload_libraries: - One query to launch a worker dynamically, relying now on "postgres" as the default database to connect to. - Two wait queries with poll_query_until(), one to wait for the worker schema to be initialized and a second to wait for a tuple processed by the worker. - Server reload to accelerate the main loop of the spawned worker. More coverage is added for workers registered when the library is loaded with shared_preload_libraries, while on it, checking that these are connecting to the database set in the GUC worker_spi.database. A local run of these test is showing that TAP is slightly faster than the original, while providing more coverage (3.7s vs 4.4s). There was also some discussions about keeping the SQL tests, but this would require initializing twice a cluster, increasing the runtime of the tests up to 5.6s here. These tests will be expanded more in an upcoming patch aimed at adding support for custom wait events for the Extension class, still under discussion, to check the new in-core APIs with and without a library set in shared_preload_libraries. Bharath has written the part where shared_preload_libraries is used, while I have migrated the existing SQL tests to TAP. Author: Bharath Rupireddy, Michael Paquier Reviewed-by: Masahiro Ikeda Discussion: https://postgr.es/m/CALj2ACWR9ncAiDF73unqdJF1dmsA2R0efGXX2624X+YVxcAVWg@mail.gmail.com
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.