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Michael Paquier 11e1577a57 Simplify TAP tests of kerberos with expected log file contents
The TAP tests of kerberos rely on the logs generated by the backend to
check various connection scenarios.  In order to make sure that a given
test does not overlap with the log contents generated by a previous
test, the test suite relied on a logic with the logging collector and a
rotation of the log files to ensure the uniqueness of the log generated
with a wait phase.

Parsing the log contents for expected patterns is a problem that has
been solved in a simpler way by PostgresNode::issues_sql_like() where
the log file is truncated before checking for the contents generated,
with the backend sending its output to a log file given by pg_ctl
instead.  This commit switches the kerberos test suite to use such a
method, removing any wait phase and simplifying the whole logic,
resulting in less code.  If a failure happens in the tests, the contents
of the logs are still showed to the user at the moment of the failure
thanks to like(), so this has no impact on debugging capabilities.

I have bumped into this issue while reviewing a different patch set
aiming at extending the kerberos test suite to check for multiple
log patterns instead of one now.

Author: Michael Paquier
Reviewed-by: Stephen Frost, Bharath Rupireddy
Discussion: https://postgr.es/m/YFXcq2vBTDGQVBNC@paquier.xyz
2021-03-22 08:59:43 +09:00
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src Simplify TAP tests of kerberos with expected log file contents 2021-03-22 08:59:43 +09:00
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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
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system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
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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/.