Re: pgsql: Add basic TAP tests for psql's tab-completion logic.

Re: Tom Lane 2020-01-02 <E1in6ft-0004zR-6l(at)gemulon(dot)postgresql(dot)org>
> Add basic TAP tests for psql's tab-completion logic.

The \DRD test fails on Debian/unstable:

# check case-sensitive keyword replacement
# XXX the output here might vary across readline versions
check_completion(
"\\DRD\t",
"\\DRD\b\b\bdrds ",
"complete \\DRD<tab> to \\drds");

00:58:02 rm -rf '/<<PKGBUILDDIR>>/build/src/bin/psql'/tmp_check
00:58:02 /bin/mkdir -p '/<<PKGBUILDDIR>>/build/src/bin/psql'/tmp_check
00:58:02 cd /<<PKGBUILDDIR>>/build/../src/bin/psql && TESTDIR='/<<PKGBUILDDIR>>/build/src/bin/psql' PATH="/<<PKGBUILDDIR>>/build/tmp_install/usr/lib/postgresql/13/bin:$PATH" LD_LIBRARY_PATH="/<<PKGBUILDDIR>>/build/tmp_install/usr/lib/x86_64-linux-gnu" PGPORT='65432' PG_REGRESS='/<<PKGBUILDDIR>>/build/src/bin/psql/../../../src/test/regress/pg_regress' REGRESS_SHLIB='/<<PKGBUILDDIR>>/build/src/test/regress/regress.so' /usr/bin/prove -I /<<PKGBUILDDIR>>/build/../src/test/perl/ -I /<<PKGBUILDDIR>>/build/../src/bin/psql t/*.pl
00:58:09
00:58:09 # Failed test 'complete \DRD<tab> to \drds'
00:58:09 # at t/010_tab_completion.pl line 64.
00:58:09 # Looks like you failed 1 test of 12.
00:58:09 t/010_tab_completion.pl ..
00:58:09 Dubious, test returned 1 (wstat 256, 0x100)
00:58:09 Failed 1/12 subtests
00:58:09
00:58:09 Test Summary Report
00:58:09 -------------------
00:58:09 t/010_tab_completion.pl (Wstat: 256 Tests: 12 Failed: 1)
00:58:09 Failed test: 11
00:58:09 Non-zero exit status: 1
00:58:09 Files=1, Tests=12, 7 wallclock secs ( 0.01 usr 0.01 sys + 0.77 cusr 0.23 csys = 1.02 CPU)
00:58:09 Result: FAIL
00:58:09 make[2]: *** [Makefile:87: check] Error 1

https://pgdgbuild.dus.dg-i.net/job/postgresql-13-binaries/architecture=amd64,distribution=sid/444/console

Shouldn't this print some "expected foo, got bar" diagnostics instead
of just dying?

Christoph