1. Slice of fix for Bug#42003 tests missing the disconnect of connections <> default

   - If missing: add "disconnect <session>"
   - If physical disconnect of non "default" sessions is not finished
     at test end: add routine which waits till this happened
+ additional improvements like
  - remove superfluous files created by the test
  - replace error numbers by error names
  - remove trailing spaces, replace tabs by spaces
  - unify writing of bugs within comments
  - correct comments
  - minor changes of formatting
Modifications according to the code review are included.
Fixed tests:
grant2
grant3
lock_tables_lost_commit
mysqldump
openssl_1
outfile

mysql-test/include/count_sessions.inc

+# include/count_sessions.inc
+#
+# SUMMARY
+#
+#    Stores the number of current sessions in $count_sessions.
+#
+#
+# USAGE
+#
+#    Please look into include/wait_until_count_sessions.inc
+#    for examples of typical usage.
+#
+#
+# EXAMPLE
+#    backup.test, grant3.test
+#
+#
+# Created: 2009-01-14 mleich
+#
+
+let $count_sessions= query_get_value(SHOW STATUS LIKE 'Threads_connected', Value, 1);

mysql-test/include/wait_until_count_sessions.inc

+# include/wait_until_count_sessions.inc
+#
+# SUMMARY
+#
+#    Waits until the passed number ($count_sessions) of concurrent sessions was
+#    observed via
+#       SHOW STATUS LIKE 'Threads_connected'
+#    or the operation times out.
+#    Note: Starting with 5.1 we could also use
+#          SELECT COUNT(*) FROM information_schema.processlist
+#          I stay with "SHOW STATUS LIKE 'Threads_connected'" because this
+#          runs in all versions 5.0+
+#
+#
+# USAGE
+#
+#    let $count_sessions= 3;
+#    --source include/wait_until_count_sessions.inc
+#
+#    OR typical example of a test which uses more than one session
+#       Such a test could harm successing tests if there is no server shutdown
+#       and start between.cw
+#
+#       If the testing box is slow than the disconnect of sessions belonging to
+#       the current test might happen when the successing test gets executed.
+#       This means the successing test might see activities like unexpected
+#       rows within the general log or the PROCESSLIST.
+#       Example from bug http://bugs.mysql.com/bug.php?id=40377
+#       --- bzr_mysql-6.0-rpl/.../r/log_state.result 
+#       +++ bzr_mysql-6.0-rpl/.../r/log_state.reject
+#       @@ -25,6 +25,7 @@
+#        event_time user_host ... command_type	argument
+#        TIMESTAMP  USER_HOST ... Query	create table t1(f1 int)
+#        TIMESTAMP  USER_HOST ... Query	select * from mysql.general_log
+#       +TIMESTAMP  USER_HOST ... Quit	
+#       ....
+#
+#       What to do?
+#       -----------
+#       <start of test>
+#       # Determine initial number of connections (set $count_sessions)
+#       --source include/count_sessions.inc
+#       ...
+#       connect (con1,.....)
+#       ...
+#       connection default;
+#       ...
+#       disconnect con1;
+#       ...
+#       # Wait until we have reached the initial number of connections
+#       # or more than the sleep time above (10 seconds) has passed.
+#       # $count_sessions
+#       --source include/wait_until_count_sessions.inc
+#       <end of test>
+#
+#       Important note about tests with unfortunate (= not cooperative
+#       to successing tests) architecture:
+#          connection con1;
+#          send SELECT ..., sleep(10)
+#          connection default;
+#          ...
+#          disconnect con1;
+#          <end of test>
+#       should be fixed by
+#          connection con1;
+#          send SELECT ..., sleep(10)
+#          connection default;
+#          ...
+#          connect con1;
+#          reap;
+#          connection default;
+#          disconnect con1;
+#          <end of test>
+#       and not only by appending include/wait_until_count_sessions.inc etc.
+#
+#
+# EXAMPLE
+#
+#    backup.test, grant3.test
+#
+#
+# Created: 2009-01-14 mleich
+#
+
+let $wait_counter= 50;
+if ($wait_timeout)
+{
+   let $wait_counter= `SELECT $wait_timeout * 10`;
+}
+# Reset $wait_timeout so that its value won't be used on subsequent
+# calls, and default will be used instead.
+let $wait_timeout= 0;
+while ($wait_counter)
+{
+   let $current_sessions= query_get_value(SHOW STATUS LIKE 'Threads_connected', Value, 1);
+   let $success= `SELECT $current_sessions = $count_sessions`;
+   if ($success)
+   {
+      let $wait_counter= 0;
+   }
+   if (!$success)
+   {
+      real_sleep 0.1;
+      dec $wait_counter;
+   }
+}
+if (!$success)
+{
+   --echo # Timeout in wait_until_count_sessions.inc
+   --echo # Number of sessions   expected: $count_sessions   found: $current_sessions
+}
+

mysql-test/r/grant2.result

@@ -366,20 +366,20 @@ insert into mysql.user select * from t1;
 drop table t1, t2;
 drop database TESTDB;
 flush privileges;
-grant all privileges on test.* to `a@`@localhost;
-grant execute on * to `a@`@localhost;
-create table t2 (s1 int);
-insert into t2 values (1);
-drop function if exists f2;
-create function f2 () returns int begin declare v int; select s1 from t2
-into v; return v; end//
-select f2();
+GRANT ALL PRIVILEGES ON test.* TO `a@`@localhost;
+GRANT EXECUTE ON * TO `a@`@localhost;
+CREATE TABLE t2 (s1 INT);
+INSERT INTO t2 VALUES (1);
+DROP FUNCTION IF EXISTS f2;
+CREATE FUNCTION f2 () RETURNS INT
+BEGIN DECLARE v INT; SELECT s1 FROM t2 INTO v; RETURN v; END//
+SELECT f2();
 f2()
 1
-drop function f2;
-drop table t2;
+DROP FUNCTION f2;
+DROP TABLE t2;
 REVOKE ALL PRIVILEGES, GRANT OPTION FROM `a@`@localhost;
-drop user `a@`@localhost;
+DROP USER `a@`@localhost;
 drop database if exists mysqltest_1;
 drop database if exists mysqltest_2;
 drop user mysqltest_u1@localhost;
@@ -436,6 +436,7 @@ SELECT * FROM t2;
 ERROR 42000: SELECT command denied to user 'mysqltest1'@'localhost' for column 'c' in table 't2'
 SELECT * FROM t1 JOIN t2 USING (b);
 ERROR 42000: SELECT command denied to user 'mysqltest1'@'localhost' for column 'c' in table 't2'
+USE test;
 DROP TABLE db1.t1, db1.t2;
 DROP USER mysqltest1@localhost;
 DROP DATABASE db1;

mysql-test/r/lock_tables_lost_commit.result

-drop table if exists t1;
-create table t1(a int) engine=innodb;
-lock tables t1 write;
-insert into t1 values(10);
-select * from t1;
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1(a INT) ENGINE=innodb;
+LOCK TABLES t1 WRITE;
+INSERT INTO t1 VALUES(10);
+SELECT * FROM t1;
 a
 10
-drop table t1;
+DROP TABLE t1;

mysql-test/t/grant3.test

-# Can't run with embedded server
+# Can't run with embedded server because we use GRANT
 -- source include/not_embedded.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
+
 # Test of GRANT commands
 
 SET NAMES binary;
@@ -23,10 +27,11 @@ grant create user on *.* to mysqltest_1@localhost;
 grant select on `my\_1`.* to mysqltest_1@localhost with grant option;
 connect (user_a,localhost,mysqltest_1,,);
 connection user_a;
---error 1410
+--error ER_CANT_CREATE_USER_WITH_GRANT
 grant select on `my\_1`.* to mysqltest_2@localhost;
 create user mysqltest_2@localhost;
 disconnect user_a;
+disconnect master;
 connection default;
 
 delete from mysql.user where user like 'mysqltest\_%';
@@ -36,7 +41,7 @@ delete from mysql.columns_priv where user like 'mysqltest\_%';
 flush privileges;
 
 #
-# Bug: #19828 Case sensitivity in Grant/Revoke
+# Bug#19828 Case sensitivity in Grant/Revoke
 #
 
 grant select on test.* to CUser@localhost;
@@ -137,7 +142,7 @@ DROP USER CUser2@LOCALHOST;
 
 
 #
-# Bug#31194: Privilege ordering does not order properly for wildcard values
+# Bug#31194 Privilege ordering does not order properly for wildcard values
 #
 
 CREATE DATABASE mysqltest_1;
@@ -160,3 +165,6 @@ DROP DATABASE mysqltest_1;
 
 
 --echo End of 5.0 tests
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/lock_tables_lost_commit.test

-# This is a test for bug 578
+# Test for Bug#578 mysqlimport -l silently fails when binlog-ignore-db is set
 
--- source include/have_innodb.inc
+--source include/have_innodb.inc
+
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
 
 connect (con1,localhost,root,,);
 connect (con2,localhost,root,,);
 
 connection con1;
 --disable_warnings
-drop table if exists t1;
-create table t1(a int) engine=innodb;
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1(a INT) ENGINE=innodb;
 --enable_warnings
-lock tables t1 write;
-insert into t1 values(10);
+LOCK TABLES t1 WRITE;
+INSERT INTO t1 VALUES(10);
 disconnect con1;
 
 connection con2;
 # The bug was that, because of the LOCK TABLES, the handler "forgot" to commit,
 # and the other commit when we write to the binlog was not done because of
 # binlog-ignore-db
-select * from t1;
-drop table t1;
+SELECT * FROM t1;
+DROP TABLE t1;
+
+connection default;
+disconnect con2;
 
 # End of 4.1 tests
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/openssl_1.test

@@ -3,6 +3,10 @@
 
 -- source include/have_ssl.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
+
 --disable_warnings
 drop table if exists t1;
 --enable_warnings
@@ -21,38 +25,42 @@ connect (con2,localhost,ssl_user2,,,,,SSL);
 connect (con3,localhost,ssl_user3,,,,,SSL);
 connect (con4,localhost,ssl_user4,,,,,SSL);
 --replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT
---error 1045
+--error ER_ACCESS_DENIED_ERROR
 connect (con5,localhost,ssl_user5,,,,,SSL);
 
 connection con1;
 # Check ssl turned on
 SHOW STATUS LIKE 'Ssl_cipher';
 select * from t1;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 delete from t1;
 
 connection con2;
 # Check ssl turned on
 SHOW STATUS LIKE 'Ssl_cipher';
 select * from t1;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 delete from t1;
 
 connection con3;
 # Check ssl turned on
 SHOW STATUS LIKE 'Ssl_cipher';
 select * from t1;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 delete from t1;
 
 connection con4;
 # Check ssl turned on
 SHOW STATUS LIKE 'Ssl_cipher';
 select * from t1;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 delete from t1;
 
 connection default;
+disconnect con1;
+disconnect con2;
+disconnect con3;
+disconnect con4;
 drop user ssl_user1@localhost, ssl_user2@localhost,
 ssl_user3@localhost, ssl_user4@localhost, ssl_user5@localhost;
 
@@ -97,7 +105,7 @@ drop table t1;
 --exec $MYSQL_TEST --ssl-cert= --max-connect-retries=1 < $MYSQLTEST_VARDIR/tmp/test.sql 2>&1
 
 #
-# BUG#21611 Slave can't connect when master-ssl-cipher specified
+# Bug#21611 Slave can't connect when master-ssl-cipher specified
 # - Apparently selecting a cipher doesn't work at all
 # - Usa a cipher that both yaSSL and OpenSSL supports
 #
@@ -133,7 +141,7 @@ drop table t1;
 --exec $MYSQL_TEST --ssl-cipher=UNKNOWN-CIPHER < $MYSQLTEST_VARDIR/tmp/test.sql 2>&1
 
 #
-# Bug #27669 mysqldump: SSL connection error when trying to connect
+# Bug#27669 mysqldump: SSL connection error when trying to connect
 #
 
 CREATE TABLE t1(a int);
@@ -152,3 +160,7 @@ INSERT INTO t1 VALUES (1), (2);
 --exec $MYSQL_DUMP --skip-create --skip-comments --ssl --ssl-cert=$MYSQL_TEST_DIR/std_data/client-cert.pem test 2>&1
 
 DROP TABLE t1;
+--remove_file $MYSQLTEST_VARDIR/tmp/test.sql
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/outfile.test

@@ -5,6 +5,10 @@ eval set @tmpdir="../tmp";
 enable_query_log;
 -- source include/have_outfile.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
+
 #
 # test of into outfile|dumpfile
 #
@@ -46,7 +50,7 @@ select load_file(concat(@tmpdir,"/outfile-test.not-exist"));
 --remove_file $MYSQLTEST_VARDIR/tmp/outfile-test.3
 drop table t1;
 
-# Bug#8191
+# Bug#8191 SELECT INTO OUTFILE insists on FROM clause
 disable_query_log;
 eval select 1 into outfile "../tmp/outfile-test.4";
 enable_query_log;
@@ -54,7 +58,7 @@ select load_file(concat(@tmpdir,"/outfile-test.4"));
 --remove_file $MYSQLTEST_VARDIR/tmp/outfile-test.4
 
 #
-# Bug #5382: 'explain select into outfile' crashes the server
+# Bug#5382 'explain select into outfile' crashes the server
 #
 
 CREATE TABLE t1 (a INT);
@@ -114,6 +118,7 @@ from information_schema.schemata
 where schema_name like 'mysqltest';
 
 connection default;
+disconnect con28181_1;
 grant file on *.* to user_1@localhost;
 
 connect (con28181_2,localhost,user_1,,mysqltest);
@@ -125,9 +130,12 @@ from information_schema.schemata
 where schema_name like 'mysqltest';
 
 connection default;
+disconnect con28181_2;
 --remove_file $MYSQLTEST_VARDIR/tmp/outfile-test.4
 use test;
 revoke all privileges on *.* from user_1@localhost;
 drop user user_1@localhost;
 drop database mysqltest;
 
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc