From f52271e9994dc1f0e17f1e7d97a90a36224c6ded Mon Sep 17 00:00:00 2001
From: Frank Cizmich <frank.cizmich@percona.com>
Date: Wed, 21 Jan 2015 14:25:09 -0200
Subject: [PATCH] tweaked checksum test to work in differing timezones

---
 t/lib/NibbleIterator.t | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/t/lib/NibbleIterator.t b/t/lib/NibbleIterator.t
index 3a7276d2..d9ada0e8 100644
--- a/t/lib/NibbleIterator.t
+++ b/t/lib/NibbleIterator.t
@@ -389,41 +389,59 @@ $ni = make_nibble_iter(
    select => $chunk_checksum,
 );
 
+# The following tests need a trick to make the timestamp column consistent
+# across different test servers.
+# Sakila uses '2006-02-15 11:44:00' for this column, which is converted to
+# a different epoch vaule in different timezones, resulting in different
+# checksum values according to the tz of the server where sakila was created.
+
+# save original value, just in case
+my ($orig_datetime)  = $dbh->selectrow_array("SELECT last_update FROM sakila.country LIMIT 1");
+# get locat datetime for UTC 2006-02-15 11:44:00
+my ($local_datetime_for_fixed_timestamp) = $dbh->selectrow_array("SELECT FROM_UNIXTIME(1140003840)");
+$dbh->do("UPDATE sakila.country SET last_update = '$local_datetime_for_fixed_timestamp'");
+
+# now the following checksums are fixed, no matter the test server timezone
+# where the sakila database was created
 my $row = $ni->next();
 is_deeply(
    $row,
-   [25, '303d7b91'],
+   [25, 'a947cb12'],
    "SELECT chunk checksum 1 FROM sakila.country"
 ) or diag(Dumper($row));
 
 $row = $ni->next();
 is_deeply(
    $row,
-   [25, '5a5d203a'],
+   [25, 'c32790b9'],
    "SELECT chunk checksum 2 FROM sakila.country"
 ) or diag(Dumper($row));
 
 $row = $ni->next();
 is_deeply(
    $row,
-   [25, '7328e41c'],
+   [25, 'ea52549f'],
    "SELECT chunk checksum 3 FROM sakila.country"
 ) or diag(Dumper($row));
 
 $row = $ni->next();
 is_deeply(
    $row,
-   [25, '7ef0c3e0'],
+   [25, 'e78a7363'],
    "SELECT chunk checksum 4 FROM sakila.country"
 ) or diag(Dumper($row));
 
 $row = $ni->next();
 is_deeply(
    $row,
-   [9, '40067b8e'],
+   [9, 'd97ccb0d'],
    "SELECT chunk checksum 5 FROM sakila.country"
 ) or diag(Dumper($row));
 
+# revert timestamp to original value, in case other tests use it
+$dbh->do("UPDATE sakila.country SET last_update = '$orig_datetime'");
+
+
 # #########################################################################
 # exec_nibble callback and explain_sth
 # #########################################################################