Rails：如何测试执行mysql查询的辅助方法

Question

I'm having a method in a helper, that determines whether a user has a specific flag ( enabled ), based on tags and a code, stored in a cookie.

def user_enabled?
  Code.joins({tags: :user}).
    where(code: cookies[:user_code]).
    where(users: {enabled: true})
    exists?
end

Basically, a tag is associated with a user and a code with a tag.

I'm not really sure how to recreate that in my specs, so that the query executes all the records required. So far I have:

it 'returns true when enabled is checked' do
  tag = create(:tag, user: create(:user, enabled: true))
  Code.create(code: 'enabled', tags: [tag])
  cookies[:user_code] = 'enabled'
  expect(user_enabled?).to be_truthy
end

But that returns false and I'm not really sure what I'm missing.

Answer 1

Here's what I did to fix this:

Context 'some context'
  let!(:tag) { create(:tag, user: create(:user)) }
  let!(:code) { create(:code, code: 'enabled', tags: [tag]) }

  it 'returns true when enabled is checked' do
    cookies[:user_code] = 'enabled'
    expect(user_enabled?).to be_truthy
  end
end