Create 'main' test directory and move 't' and 'r' there

mysql-test/main/mysqladmin.test

@@ -0,0 +1,53 @@
+# Embedded server doesn't support external clients
+--source include/not_embedded.inc
+#
+# Test "mysqladmin ping"
+#
+
+--exec $MYSQLADMIN --default-character-set=latin1 -S $MASTER_MYSOCK -P $MASTER_MYPORT  -u root --password= ping 2>&1
+
+
+#
+# Bug#10608 mysqladmin breaks on "database" variable in my.cnf
+#
+
+--replace_regex /.*mysqladmin.*: unknown/mysqladmin: unknown/
+--error 7
+--exec $MYSQLADMIN --database=db1 --default-character-set=latin1 -S $MASTER_MYSOCK -P $MASTER_MYPORT  -u root --password= ping 2>&1
+
+# When mysqladmin finds "loose-database" it shall print
+# a warning and continue
+--replace_regex /Warning: .*mysqladmin.*: unknown/Warning: mysqladmin: unknown/
+--exec $MYSQLADMIN --loose-database=db2 --default-character-set=latin1 -S $MASTER_MYSOCK -P $MASTER_MYPORT  -u root --password= ping 2>&1
+
+--echo #
+--echo # Bug#58221 : mysqladmin --sleep=x --count=x keeps looping
+--echo #
+
+--echo # Executing mysqladmin with --sleep=1 and --count=2.
+--exec $MYSQLADMIN -u root -S $MASTER_MYSOCK -P $MASTER_MYPORT --sleep=1 --count=2 ping > $MYSQLTEST_VARDIR/tmp/mysqladmin.tmp
+--echo # Done.
+--echo # Displaying the output :
+--cat_file $MYSQLTEST_VARDIR/tmp/mysqladmin.tmp
+
+--remove_file $MYSQLTEST_VARDIR/tmp/mysqladmin.tmp
+
+--echo #
+--echo # BUG#11766184 - 59234: cmdline clients crash --defaults-extra-file
+--echo #                with no .cnf or .ini extension.
+--echo #
+
+--echo # Creating an empty file 'cnf_file'
+--write_file $MYSQLTEST_VARDIR/tmp/cnf_file
+EOF
+
+--echo # Using --defaults-extra-file option with 'cnf_file'.
+--exec $MYSQLADMIN --defaults-extra-file=$MYSQLTEST_VARDIR/tmp/cnf_file -uroot -S $MASTER_MYSOCK -P $MASTER_MYPORT ping 2>&1
+
+--remove_file $MYSQLTEST_VARDIR/tmp/cnf_file
+
+#
+# MDEV-7883 Segmentation failure when running mysqladmin -u root -p
+#
+--error 1
+--exec $MYSQLADMIN -u root -p 2>&1 > /dev/null