All test should work in demo magento 1.8 with sample data
# Install magento 1.8 with sample data. Default currency "US$"
http://www.magentocommerce.com/wiki/1_-_installation_and_configuration/installing_magento_via_shell_ssh
# Create admin, frontend (firstname Test, lastname User) and soap user.
# Change settings in conf/defaults.xml or create a new configuration file
git clone git://github.com/AOEpeople/Menta_SampleProject.git Menta_SampleProject
cd Menta_SampleProject
./composer.phar install
# download and run selenium server
java -jar selenium-server-standalone-2.42.2.jar
cd Tests
# run single test
../bin/phpunit --configuration=../conf/defaults.xml General/ScreenshotsTest.php
# run all tests
../bin/phpunit --configuration=../conf/defaults.xml ../vendor/aoemedia/menta/lib/Menta/Util/CreateTestSuite.php