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Update to suggest using PST8PDT time zone rather than full time zone string.

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Include section on error message differences.
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Thomas G. Lockhart 1997-06-03 14:18:38 +00:00
parent 4bd4a55b98
commit 066fce7bf9
1 changed files with 31 additions and 14 deletions
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src/test/regress/README
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@ -6,12 +6,12 @@ Introduction
Andrew Yu. It tests standard SQL operations as well as the extensibility Andrew Yu. It tests standard SQL operations as well as the extensibility
capabilities of PostgreSQL. capabilities of PostgreSQL.
These tests have recently been revised by Marc Fournier and others to These tests have recently been revised by Marc Fournier and Thomas Lockhart
become current for PostgreSQL v6.1. The tests are now packaged as to become current for PostgreSQL v6.1. The tests are now packaged as
functional units and should be easier to run and easier to interpret. functional units and should be easier to run and easier to interpret.
Some properly installed and fully functional PostgreSQL installations Some properly installed and fully functional PostgreSQL installations
can fail these regression tests due to artifacts of floating point can fail some of these regression tests due to artifacts of floating point
representation and time zone support. The current tests are evaluated representation and time zone support. The current tests are evaluated
using a simple "diff" algorithm, and are sensitive to small system using a simple "diff" algorithm, and are sensitive to small system
differences. For apparently failed tests, examining the differences differences. For apparently failed tests, examining the differences
@ -27,13 +27,21 @@ Preparation
files with absolute pathnames and user names. files with absolute pathnames and user names.
The postmaster should be invoked with the system time zone set for The postmaster should be invoked with the system time zone set for
Berkeley, California. On some systems, this can be accomplished by Berkeley, California. On many systems, this can be accomplished by
setting the TZ environment variable before starting the postmaster setting the TZ environment variable before starting the postmaster
(for csh/bash; use set/export for some other shells): (for csh/bash; use set/export for some other shells):
setenv TZ PST8PDT7,M04.01.0,M10.05.03 setenv TZ PST8PDT
date
/usr/local/pgsql/bin/postmaster -s /usr/local/pgsql/bin/postmaster -s
The "date" command above should have returned the current system time
in the PST8PDT time zone. If the PST8PDT database is not available, then
your system may have returned the time in GMT. If the PST8PDT time zone
is not available, you can set the time zone rules explicitly:
setenv TZ PST8PDT7,M04.01.0,M10.05.03
Directory Layout Directory Layout
input/ .... .source files that are converted using 'make all' into input/ .... .source files that are converted using 'make all' into
@ -73,6 +81,15 @@ Comparing expected/actual output
The files might not compare exactly. The following paragraphs attempt The files might not compare exactly. The following paragraphs attempt
to explain the differences. to explain the differences.
Error message differences
Some of the regression tests involve intentional invalid input values.
Error messages can come from either the Postgres code or from the host
platform system routines. In the latter case, the messages may vary
between platforms, but should reflect similar information. These
differences in messages will result in a "failed" regression test which
can be validated by inspection.
OID differences OID differences
There are several places where PostgreSQL OID (object identifiers) appear There are several places where PostgreSQL OID (object identifiers) appear
@ -93,12 +110,14 @@ DATE/TIME differences
is running in the same time zone as Berkeley, California. See details in is running in the same time zone as Berkeley, California. See details in
the section on how to run the regression tests. the section on how to run the regression tests.
If you do not explicitly set your time zone environment to PST/PDT, then If you do not explicitly set your time zone environment to PST8PDT, then
most of the date and time results will reflect your local time zone and most of the date and time results will reflect your local time zone and
will fail the regression testing. will fail the regression testing.
There appear to be some systems which do not accept the same syntax for There appears to be some systems which do not accept the recommended syntax
setting the local time zone. for explicitly setting the local time zone rules. Some systems using the
public domain time zone package exhibit minor problems with pre-1970 PDT
times, representing them in PST instead.
FLOATING POINT differences FLOATING POINT differences
@ -168,11 +187,9 @@ Current release notes (Thomas.Lockhart@jpl.nasa.gov)
Three new data types (datetime, timespan, and circle) have been added to Three new data types (datetime, timespan, and circle) have been added to
the native set of PostgreSQL types. Points, boxes, paths, and polygons the native set of PostgreSQL types. Points, boxes, paths, and polygons
have had their output formats improved, but the old-style input formats have had their output formats made consistant across the data types.
are accepted by v6.1. The source data files have not been updated to the The polygon output in misc.out has only been spot-checked for correctness
new formats, but should be for the next release. The polygon output in relative to the original regression output.
misc.out has only been spot-checked for correctness relative to the
original regression output.
PostgreSQL v6.1 introduces a new, alternate optimizer which uses "genetic" PostgreSQL v6.1 introduces a new, alternate optimizer which uses "genetic"
algorithms. These algorithms introduce a random behavior in the ordering algorithms. These algorithms introduce a random behavior in the ordering
@ -204,6 +221,6 @@ Sample timing results
to run, presumably due to the timing vagaries of multitasking systems. to run, presumably due to the timing vagaries of multitasking systems.
Time System Time System
06:12 Pentium Pro 180, 32MB, Linux 2.0.27, gcc 2.7.2 -O2 -m486 06:12 Pentium Pro 180, 32MB, Linux 2.0.30, gcc 2.7.2 -O2 -m486
12:06 P-100, 48MB, Linux 2.0.29, gcc 12:06 P-100, 48MB, Linux 2.0.29, gcc
39:58 Sparc IPC 32MB, Solaris 2.5, gcc 2.7.2.1 -O -g 39:58 Sparc IPC 32MB, Solaris 2.5, gcc 2.7.2.1 -O -g