How do you set the server port in Rails system tests?

Question

The Rails server starts on a different port every time you run the system tests.

Is there any way to specify which port this should be and not have it change on every run?

I would like to test clicking a link from an ActionMailer message in my system test. I need to specify a host in my test environment config file for this and I need a static port number for that.

Answer 1

Already answered here: https://stackoverflow.com/a/6807498/338859

If using Capybara you can set the port in the spec_helper.rb like so:

Capybara.server_port = 1234

Also see this blog post, it also has some mentions for emails: System of a test: Proper browser testing in Ruby on Rails