file_fdw: Add regression tests for ON_ERROR and other options.

This commit introduces regression tests to validate incorrect settings
for the ON_ERROR, LOG_VERBOSITY, and REJECT_LIMIT options in file_fdw.

Author: Atsushi Torikoshi
Reviewed-by: Fujii Masao
Suggested-by: Yugo Nagata
Discussion: https://postgr.es/m/20241113231706.09e5b5ea9640289312835be8@sraoss.co.jp

contrib/file_fdw/expected/file_fdw.out

@@ -90,8 +90,16 @@ ERROR:  COPY delimiter cannot be newline or carriage return
 CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', null '
 ');       -- ERROR
 ERROR:  COPY null representation cannot use newline or carriage return
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (on_error 'unsupported');       -- ERROR
+ERROR:  COPY ON_ERROR "unsupported" not recognized
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'binary', on_error 'ignore');       -- ERROR
+ERROR:  only ON_ERROR STOP is allowed in BINARY mode
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (log_verbosity 'unsupported');       -- ERROR
+ERROR:  COPY LOG_VERBOSITY "unsupported" not recognized
 CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (reject_limit '1');       -- ERROR
 ERROR:  COPY REJECT_LIMIT requires ON_ERROR to be set to IGNORE
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (on_error 'ignore', reject_limit '0');       -- ERROR
+ERROR:  REJECT_LIMIT (0) must be greater than zero
 CREATE FOREIGN TABLE tbl () SERVER file_server;  -- ERROR
 ERROR:  either filename or program is required for file_fdw foreign tables
 \set filename :abs_srcdir '/data/agg.data'

contrib/file_fdw/sql/file_fdw.sql

@@ -77,7 +77,11 @@ CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', delimiter
 ');       -- ERROR
 CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', null '
 ');       -- ERROR
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (on_error 'unsupported');       -- ERROR
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'binary', on_error 'ignore');       -- ERROR
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (log_verbosity 'unsupported');       -- ERROR
 CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (reject_limit '1');       -- ERROR
+CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (on_error 'ignore', reject_limit '0');       -- ERROR
 CREATE FOREIGN TABLE tbl () SERVER file_server;  -- ERROR
 
 \set filename :abs_srcdir '/data/agg.data'