[英]How do I properly test CanCan abilities with RSpec
我是第一次測試CanCan的能力而且很難過。 我錯過了一些東西......即使我在can中返回false / true:invite_to block我仍然沒有通過規范。 我錯過了使用CanCan匹配器嗎? 還是存根? 或者在CanCan中定義能力?
我缺少什么?
ability.rb
class Ability
include CanCan::Ability
def initialize(user)
user ||= User.new
can :invite_to, Network do |network|
network.allows_invitations? && (user.admin? || user.can_send_invitations_for?(network))
end
end
end
ability_spec.rb
require 'cancan'
require 'cancan/matchers'
require_relative '../../app/models/ability.rb'
class Network; end;
describe Ability do
let(:ability) { Ability.new(@user) }
describe "#invite_to, Network" do
context "when network level invitations are enabled" do
let(:network) { stub(allows_invitations?: true) }
it "allows an admin" do
@user = stub(admin?: true)
ability.should be_able_to(:invite_to, network)
end
it "allows a member if the member's invitation privileges are enabled" do
@user = stub(admin?: false, can_send_invitations_for?: true)
ability.should be_able_to(:invite_to, network)
end
it "denies a member if the member's invitation privileges are disabled" do
@user = stub(admin?: false, can_send_invitations_for?: false)
ability.should_not be_able_to(:invite_to, network)
end
end
end
end
故障
1) Ability#invite_to, Network when network level invitations are enabled allows an admin
Failure/Error: ability.should be_able_to(:invite_to, network)
expected to be able to :invite_to #<RSpec::Mocks::Mock:0x3fe3ed90444c @name=nil>
# ./spec/models/ability_spec.rb:16:in `block (4 levels) in <top (required)>'
2) Ability#invite_to, Network when network level invitations are enabled allows a member if the member's invitation privileges are enabled
Failure/Error: ability.should be_able_to(:invite_to, network)
expected to be able to :invite_to #<RSpec::Mocks::Mock:0x3fe3edc27408 @name=nil>
# ./spec/models/ability_spec.rb:21:in `block (4 levels) in <top (required)>'
let(:network) do
n = Network.new
n.stub!(:allows_invitations? => true)
n
end
如果在編寫代碼時運行代碼,則永遠不會到達Can塊中的代碼。 你對stub的調用返回一個類RSpec :: Mocks :: Mock的對象; 它必須是CanCan類網絡才能應用規則。
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