Assert the cart page holds (or does not hold) a product.
Examples
Then the cart should contain "Joust Duffle Bag"
Then the cart should not contain "Radiant Tee"
And the cart should contain "Aim Analog Watch"
Then the cart should contain "Radiant Tee"
Then the cart should not contain "Test Bag"
Pattern
Then(/^the cart should( not)* contain "([^"]*)"$/, …)
Part of @webship-js/magento-steps (github.com/webship/magento-steps), a step pack for Webship-js 2.0.x.