Search the store with the search box of the header and wait for the result page.
Examples
When I search the store for "yoga"
When I search the store for "bag"
And I search the store for "Joust Duffle Bag"
When we search the store for "24-MB01"
When search the store for "zzzqqqxxx"
Pattern
When(/^(I |we )*search the store for "([^"]*)"$/, …)
Part of @webship-js/magento-steps (github.com/webship/magento-steps), a step pack for Webship-js 2.0.x.