活动记录测试has_many关联

Question

I'm trying to test if some entities are properly associated with the owner entity.

class Recipe < ActiveRecord::Base
    has_many :ingredients
end

I've inserted the ingredients and later on want to test if they belong to a given recipe. In cucumber I would like to test something like:

recipe.ingredients.should_contain(ingredient1, ingredient2)

How can I test this?

Answer 1

This seems more like a unit or integration test and less like a test of behavior. You can use shoulda to test if the relation exists. https://github.com/thoughtbot/shoulda-matchers . Then you can do something like this for a unit test.

    recipe.should have_many(:ingredients)

On the other hand you can insert the ingredients through an integration test and check the relation on the other side just like you asked in your question.