Your unit tests aren't going to catch browser bugs which sounds like the big reason there are so many "tests" (it's 7,500 tests across a lot of browsers). I bet they have a lot of unit tests too for components that aren't on the user facing web app.
The slide "Why Salesforce loves WebDriver" explains it perfectly. It's a feature--not a bug--that they experience latency (users do too and latency is realllly important for web apps).
It is a lot of VMs, but Salesforce is a $32B company entirely based in the cloud, a few million bucks of metal to test their breadwinner seems cheap.
The slide "Why Salesforce loves WebDriver" explains it perfectly. It's a feature--not a bug--that they experience latency (users do too and latency is realllly important for web apps).
It is a lot of VMs, but Salesforce is a $32B company entirely based in the cloud, a few million bucks of metal to test their breadwinner seems cheap.