Helps

• Using asset pipeline outside rails

Correlating debugging errors to source files.

Currently using Sprockets template name in-lined. Any better solutions?

Suggestions:

• Look at head repo of asset pipline
• Middleman gem

Helps

• Alternatives to css :contains() selector

We use this selector in many tests, for example the ones that require to click on the link of a specific table row:

within "tr:contains('My Line')" do
    click_link "Edit"
end

This selector however is deprecated, and didn’t make it to css3.

Thus, is it safe to use it in tests?

Suggestions

• Iterate over all the links
• Put an id on the link
• Probably not going away (and contains back in if it breaks)
• Data attribute
• Xpath – last resort

Helps

• ActiveRecord::UnknownPrimaryKey error when restoring backup on Heroku

Suggestions:

• Check foreign key constraints

• Use pgbackup

• Taps Server Error: PGError: ERROR: time zone displacement out of range:

Taps Server Error: PGError: ERROR: time zone displacement out of range: “1970-01-01 12:00:00.000000+5857411200″

Suggestions:

• Use pgbackup

Interestings

• Capybara/Selenium wait_for_ajax is your friend

A good generic wait until the last AJAX call has returned before moving on to your next assertion. Solved a lot of unstable-in-ci Capybara specs for us

http://agilesoftwaretesting.com/selenium-wait-for-ajax-the-right-way/