Facing error when I run `composer behat` using mariadb

[ryotsun]

Bug Report

• Yes, I reviewed the contribution guidelines.
• Yes, more specifically, I reviewed the guidelines on how to write clear bug reports.

behat fails when I run the following:

$ composer behat -- features/db-export.feature 
> run-behat-tests 'features/db-export.feature'
..F..F..F

--- Failed steps:

001 Scenario: Export database to STDOUT # features/db-export.feature:37
      Then STDOUT should contain:       # features/db-export.feature:41
        $ wp db export -
...
...
002 Scenario: Export database with mysql defaults to STDOUT # features/db-export.feature:46
      Then STDOUT should contain:                           # features/db-export.feature:50
        $ wp db export --defaults -
...
...
003 Scenario: Export database with mysql --no-defaults to STDOUT # features/db-export.feature:55
      Then STDOUT should contain:                                # features/db-export.feature:59
        $ wp db export --no-defaults -
...
...

Expected output contains -- MySQL dump but actual is -- MariaDB dump because I'm using mariadb as mysql-client.
It should also support mariadb.

Here's my wp --info

$ wp --info
OS:	Linux 5.10.25-linuxkit #1 SMP PREEMPT Tue Mar 23 09:24:45 UTC 2021 aarch64
Shell:	
PHP binary:	/usr/local/bin/php
PHP version:	7.4.20
php.ini used:	
MySQL binary:	/usr/bin/mysql
MySQL version:	mysql  Ver 15.1 Distrib 10.5.11-MariaDB, for Linux (aarch64) using readline 5.1
SQL modes:	
WP-CLI root dir:	/home/cli/wp-cli
WP-CLI vendor dir:	/home/cli/wp-cli/vendor
WP_CLI phar path:	
WP-CLI packages dir:	
WP-CLI global config:	
WP-CLI project config:	/home/cli/wp-cli/vendor/wp-cli/db-command/wp-cli.yml
WP-CLI version:	2.6.0-alpha

possible solution

STDOUT should contain -- Dump completed on instead of -- MySQL dump may be a solution.

[schlessera]

Fixed via #201