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SQL/JSON query functions allow specifying an expression to return when either of ON ERROR or ON EMPTY condition occurs when evaluating the JSON path expression. The parser (transformJsonBehavior()) checks that the specified expression is one of the supported expressions, but there are two issues with how the check is done that are fixed in this commit: * No check for some expressions related to coercion, such as CoerceViaIO, that may appear in the transformed user-specified expressions that include cast(s) * An unsupported expression may be masked by a coercion-related expression, which must be flagged by checking the latter's argument expression recursively Author: Jian He <jian.universality@gmail.com> Author: Amit Langote <amitlangote09@gmail.com> Reported-by: Jian He <jian.universality@gmail.com> Discussion: https://postgr.es/m/CACJufxEqhqsfrg_p7EMyo5zak3d767iFDL8vz_4%3DZBHpOtrghw@mail.gmail.com Discussion: https://postgr.es/m/CACJufxGOerH1QJknm1noh-Kz5FqU4p7QfeZSeVT2tN_4SLXYNg@mail.gmail.com
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication (but see also below) examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level kerberos/ Tests for Kerberos/GSSAPI authentication and encryption ldap/ Tests for LDAP-based authentication locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication