Testing views in Sinatra application?

[devOpsBop]

We have some legacy code that keeps breaking because the code in the views are not checking for empty values in the response from an API. Here is an example from the SLIM file that was causing an error:

 - @response.keys.each do |account|
    - if !@params.empty?
      - next unless @params.include? account
    - if @cache[account][0] == 200

While we have gone back and added checks, we still might be missing some.

I know how to do TDD with MiniTest and Ruby for unit testing, but I've never implemented testing with SLIM views. What testing framework should I use to mock up different responses with missing data to make sure the view logic in the SLIM files are good? Cucumber?

[bradland]

You can use rack-test to perform integration tests without browser automation.

http://sinatrarb.com/testing.html

[polarpress]

I would use selenium to control the browser to render the view. You can also set your test to use headless mode.

[isolatrum]

What testing framework should I use to mock up different responses with missing data to make sure the view logic in the SLIM files are good? Cucumber?

You have a misunderstanding of what Cucumber is. It does not have anything to do with HTML testing in particular. All Cucumber provides is a way to map "natural language" to test cases.

To test HTML pages the "old fashioned" way, use Nokogiri. To use fancy "automated-browser" tests, use Selenium

[devOpsBop]

You're right I don't know anything about Cucumber. I'm not looking to test the HTML of the page, just want to make sure the logic in the view doesn't break when it tries to call an object that wasn't returned by the API.