Some if simplifications in tests

mysql-test/extra/rpl_tests/rpl_stop_slave.test

@@ -9,7 +9,7 @@
 # --source extra/rpl_tests/rpl_stop_slave.test
 #
 
-if (`SELECT "$tmp_table_stm" = ''`)
+if (!$tmp_table_stm)
 {
   --echo \$tmp_table_stm is NULL
   --die $tmp_table_stm is NULL

mysql-test/include/check_ftwrl_compatible.inc

@@ -34,7 +34,7 @@ if (!$err)
 {
 --echo Success: Was able to run '$statement' under FTWRL.
 unlock tables;
-if (`SELECT "$cleanup_stmt" <> ""`)
+if ($cleanup_stmt)
 {
 --eval $cleanup_stmt;
 }
@@ -91,12 +91,12 @@ connection default;
 --reap
 }
 
-if (`SELECT "$cleanup_stmt" <> ""`)
+if ($cleanup_stmt)
 {
 --eval $cleanup_stmt;
 }
 
-if (`SELECT "$skip_3rd_check" = ""`)
+if (!$skip_3rd_check)
 {
 #
 # Finally, let us check that FTWRL will succeed if this statement
@@ -147,7 +147,7 @@ connection default;
 }
 
 set debug_sync= "RESET";
-if (`SELECT "$cleanup_stmt" <> ""`)
+if ($cleanup_stmt)
 {
 --eval $cleanup_stmt;
 }

mysql-test/include/check_ftwrl_incompatible.inc

@@ -41,11 +41,11 @@ if (!$err)
 {
 --echo Error: Was able to run '$statement' under FTWRL!
 unlock tables;
-if (`SELECT "$cleanup_stmt1" <> ""`)
+if ($cleanup_stmt1)
 {
 --eval $cleanup_stmt1;
 }
-if (`SELECT "$cleanup_stmt2" <> ""`)
+if ($cleanup_stmt2)
 {
 --eval $cleanup_stmt2;
 }
@@ -88,16 +88,16 @@ unlock tables;
 connection default;
 --reap
 
-if (`SELECT "$cleanup_stmt1" <> ""`)
+if ($cleanup_stmt1)
 {
 --eval $cleanup_stmt1;
 }
-if (`SELECT "$cleanup_stmt2" <> ""`)
+if ($cleanup_stmt2)
 {
 --eval $cleanup_stmt2;
 }
 
-if (`SELECT "$skip_3rd_check" = ""`)
+if (!$skip_3rd_check)
 {
 #
 # Finally, let us check that FTWRL will not succeed if this
@@ -141,11 +141,11 @@ connection default;
 
 set debug_sync= "RESET";
 
-if (`SELECT "$cleanup_stmt1" <> ""`)
+if ($cleanup_stmt1)
 {
 --eval $cleanup_stmt1;
 }
-if (`SELECT "$cleanup_stmt2" <> ""`)
+if ($cleanup_stmt2)
 {
 --eval $cleanup_stmt2;
 }

mysql-test/include/check_slave_param.inc

@@ -25,7 +25,7 @@
 
 
 --let $_param_value= query_get_value(SHOW SLAVE STATUS, $slave_param, 1)
-if (`SELECT '$_param_value' != '$slave_param_value'`) {
+if ($_param_value != $slave_param_value) {
   --source include/show_rpl_debug_info.inc
   --echo Wrong value for $slave_param. Expected '$slave_param_value', got '$_param_value'
   --die Wrong value for slave parameter

mysql-test/include/diff_tables.inc

@@ -81,7 +81,7 @@ if (`SELECT LOCATE(',', '$diff_tables') = 0`)
 # Iterate over all tables
 --let $_dt_outfile=
 --let $_dt_prev_outfile=
-while (`SELECT '$_dt_tables' != ''`)
+while ($_dt_tables)
 {
   --let $_dt_table= `SELECT SUBSTRING_INDEX('$_dt_tables', ',', 1)`
   --let $_dt_tables= `SELECT SUBSTRING('$_dt_tables', LENGTH('$_dt_table') + 2)`

mysql-test/include/rpl_change_topology.inc

@@ -111,11 +111,11 @@ if (`SELECT '$rpl_topology' = '' OR '$rpl_server_count' = ''`)
   --die You must set $rpl_topology and $rpl_server_count before you source rpl_change_topology.inc. If you really want to change to the empty topology, set $rpl_topology= none
 }
 --let $_rpl_topology= $rpl_topology
-if (`SELECT '$_rpl_topology' = 'none'`)
+if ($_rpl_topology == 'none')
 {
   --let $_rpl_topology=
 }
-if (`SELECT '!$rpl_master_list!' = '!!'`)
+if ($rpl_master_list == '')
 {
   --die You must source include/rpl_init.inc before you source include/rpl_change_topology.inc
 }
@@ -227,16 +227,13 @@ if (!$rpl_skip_change_master)
       }
       eval CHANGE MASTER TO MASTER_HOST = '127.0.0.1', MASTER_PORT = $_rpl_port, MASTER_USER = 'root', MASTER_LOG_FILE = '$_rpl_master_log_file'$_rpl_master_log_pos, MASTER_CONNECT_RETRY = 1;
     }
-    if (!$_rpl_master)
+    if ($_rpl_master == '')
     {
-      if (`SELECT '$_rpl_master' = ''`)
-      {
         # This un-configures the server so that it's not a slave.
         # After BUG#28796, such configuration is not possible any more.
         #--let $rpl_connection_name= server_$_rpl_server
         #--source include/rpl_connection.inc
         #CHANGE MASTER TO MASTER_HOST = '';
-      }
     }
     --dec $_rpl_server
   }

mysql-test/include/rpl_connect.inc

@@ -33,7 +33,7 @@ if (!$rpl_server_number)
 {
   --die ERROR IN TEST: You must set $rpl_server_number before sourcing include/rpl_connect.inc
 }
-if (`SELECT '$rpl_connection_name' = ''`)
+if (!$rpl_connection_name)
 {
   --die ERROR IN TEST: You must set $rpl_connection_name before sourcing include/rpl_connect.inc
 }

mysql-test/include/rpl_diff.inc

@@ -46,7 +46,7 @@ if (!$rpl_diff_statement)
 
 # Get database name.
 --let $_rpl_diff_database= $rpl_diff_database
-if (`SELECT '$_rpl_diff_database' = ''`)
+if (!$_rpl_diff_database)
 {
   --let $_rpl_diff_database= test
 }

mysql-test/include/rpl_end.inc

@@ -68,7 +68,7 @@ while ($_rpl_server)
   # Only check slave threads for error on hosts that were at some
   # point configured as slave.
   --let $_tmp= query_get_value(SHOW SLAVE STATUS, Master_Host, 1)
-  if (`SELECT '$_tmp' != 'No such row'`)
+  if ($_tmp != 'No such row')
   {
     --source include/check_slave_no_error.inc
   }

mysql-test/include/rpl_init.inc

@@ -116,24 +116,24 @@ if ($rpl_debug)
 }
 
 # Allow $MASTER_MYPORT as alias for $SERVER_MYPORT_1
-if (`SELECT '$SERVER_MYPORT_1' = ''`)
+if (!$SERVER_MYPORT_1)
 {
   --let SERVER_MYPORT_1= $MASTER_MYPORT
 }
 # Allow $SLAVE_MYPORT as alias for $SERVER_MYPORT_2
-if (`SELECT '$SERVER_MYPORT_2' = ''`)
+if (!$SERVER_MYPORT_2)
 {
   --let SERVER_MYPORT_2= $SLAVE_MYPORT
 }
 # Allow $MASTER_MYPORT1 as alias for $SERVER_MYPORT_3
 # (this alias is used by rpl_ndb tests)
-if (`SELECT '$SERVER_MYPORT_3' = ''`)
+if (!$SERVER_MYPORT_3)
 {
   --let SERVER_MYPORT_3= $MASTER_MYPORT1
 }
 # Allow $SLAVE_MYPORT1 as alias for $SERVER_MYPORT_4
 # (this alias is used by rpl_ndb tests)
-if (`SELECT '$SERVER_MYPORT_4' = ''`)
+if (!$SERVER_MYPORT_4)
 {
   --let SERVER_MYPORT_4= $SLAVE_MYPORT1
 }

mysql-test/include/show_slave_status.inc

@@ -58,13 +58,13 @@
 
 
 --let $_show_slave_status_items=$status_items
-if (`SELECT "XX$status_items" = "XX"`)
+if (!$status_items)
 {
   --die Bug in test case: The mysqltest variable $status_items is not set.
 }
 
 
-while (`SELECT "XX$_show_slave_status_items" <> "XX"`) 
+while ($_show_slave_status_items) 
 {
   --let $_show_slave_status_name= `SELECT SUBSTRING_INDEX('$_show_slave_status_items', ',', 1)`
   --let $_show_slave_status_items= `SELECT LTRIM(SUBSTRING('$_show_slave_status_items', LENGTH('$_show_slave_status_name') + 2))`

mysql-test/include/sync_slave_io_with_master.inc

@@ -36,7 +36,7 @@
 --source include/save_master_pos.inc
 
 --let $rpl_connection_name= slave
-if (`SELECT '$sync_slave_connection' != ''`)
+if ($sync_slave_connection)
 {
   --let $rpl_connection_name= $sync_slave_connection
 }

mysql-test/include/wait_for_binlog_event.inc

@@ -24,7 +24,7 @@ while (`SELECT INSTR("$_last_event","$wait_binlog_event") = 0`)
   real_sleep 0.1;
   let $_event= query_get_value(SHOW BINLOG EVENTS, Info, $_event_pos);
   let $_last_event= $_event;
-  while (`SELECT "$_event" != "No such row"`)
+  while ($_event != "No such row")
   {
     inc $_event_pos;
     let $_last_event= $_event;

mysql-test/include/wait_for_slave_param.inc

@@ -52,7 +52,7 @@ if (!$_slave_timeout)
   let $_slave_timeout= 300;
 }
 
-if (`SELECT '$slave_error_param' = ''`)
+if ($slave_error_param == '')
 {
   --let $slave_error_param= 1
 }
@@ -70,7 +70,7 @@ if ($rpl_debug)
 
 --let $_slave_check_configured= query_get_value("SHOW SLAVE STATUS", Slave_IO_Running, 1)
 
-if (`SELECT '$_slave_check_configured' = 'No such row'`)
+if ($_slave_check_configured == 'No such row')
 {
   --echo **** ERROR: SHOW SLAVE STATUS returned empty result set. Slave not configured. ****
   --source include/show_rpl_debug_info.inc

mysql-test/include/write_var_to_file.inc

@@ -27,12 +27,12 @@
 # @@secure_file_priv. That makes this more complex than you might
 # expect.
 
-if (`SELECT '$write_to_file' = ''`)
+if (!$write_to_file)
 {
   --die You must set the mysqltest variable \$write_to_file before you source include/write_var_to_file.inc
 }
 
-if (`SELECT '$write_to_file' = 'GENERATE'`)
+if ($write_to_file == 'GENERATE')
 {
   --let $_wvtf_suffix= `SELECT UUID()`
   --let $write_to_file= $MYSQLTEST_VARDIR/tmp/_var_file_$_wvtf_suffix.inc

mysql-test/suite/innodb/t/innodb_bug42419.test

@@ -7,7 +7,7 @@
 --source include/have_innodb.inc
 
 let $innodb_lock_wait_timeout= query_get_value(SHOW VARIABLES LIKE 'innodb_lock_wait_timeout%', Value, 1);
-if (`SELECT $innodb_lock_wait_timeout < 10`)
+if ($innodb_lock_wait_timeout < 10)
 {
    --echo # innodb_lock_wait_timeout must be >= 10 seconds
    --echo # so that this test can work all time fine on an overloaded testing box