This is thoroughly explained in README in the tests/UI folder.
You’ll need a working installation of PrestaShop in order to run the tests.
If you want to run only one test from a campaign or a couple of tests in the same folder, you can use test:specific command.
To specify which test to run, you can add the TEST_PATH parameter in the beginning of the command
# To run the **Filter Products** test from sanity campaign
TEST_PATH="sanity/02_productsBO/01_filterProducts" URL_FO="https://domain.tld/" npm run test:specific
# To run all **Products BO** tests
TEST_PATH="sanity/02_productsBO/*" URL_FO="https://domain.tld/" npm run test:specific