这是我正在测试的方法：
class User < ActiveRecord::Base
has_many :sports, :through => :user_sports, order: "user_sports.created_at", class_name: "Sport"
has_many :user_sports
def primary_sport
return nil if user_sports.blank?
user_sports.primary_only.first.sport
end
end
用户工厂；
FactoryGirl.define do
sequence(:email) do |n|
"user#{n}@example.com"
end
factory :user do
email
first_name Faker::Name.first_name
last_name Faker::Name.last_name
password "password"
password_confirmation "password"
agreed_to_age_requirements true
username "testing123"
state "AL"
city_id 201
school_id 20935
handedness "Left"
customer_id { "#{rand(1000)}" }
sports {[create(:sport)]}
after(:create) do |user, elevator|
user.subscriptions << create(:subscription)
user.roles << create(:role)
end
end
factory :athlete, class: "Athlete", parent: :user do
type "Athlete"
recruit_year "2016"
end
end
这是我的测试：
require 'spec_helper'
describe User do
describe "associations" do
it { should have_and_belong_to_many(:roles) }
it { should belong_to(:account_type) }
it { should belong_to(:primary_sport).class_name("Sport") }
it { should belong_to(:school) }
it { should belong_to(:city) }
it { should belong_to(:hometown) }
it { should have_many(:social_actions) }
it { should have_one(:invitation) }
it { should have_many(:authorizations) }
it { should belong_to(:user_type) }
it { should have_and_belong_to_many(:positions).class_name "SportPosition" }
it { should have_many(:sports).through(:user_sports) }
it { should have_many(:user_sports) }
it { should have_many :contributorships }
it { should have_many(:managed_athletes).through(:contributorships) }
it { should have_and_belong_to_many(:subscriptions) }
end
describe "nested attributes" do
it { should accept_nested_attributes_for(:user_sports) }
it { should accept_nested_attributes_for(:subscriptions) }
end
describe "validations" do
it { should validate_presence_of(:email) }
it { should validate_uniqueness_of(:email) }
it { should allow_value("test@test.com").for(:email) }
it { should_not allow_value("test.com").for(:email) }
end
describe "instance methods" do
before :each do
@user = create(:user, sports: [])
@school_admin_role = create(:role, name: "School Admin")
@contributor_role = create(:role, name: "Contributor")
end
describe "#my_athletes_path" do
it "returns a school admin path if the user has the role of School Admin" do
@user.roles << @school_admin_role
@user.my_athletes_path.should eq school_admin_athletes_path
end
it "returns a school admin path if the user has the role of Contributor" do
@user.roles << @contributor_role
@user.my_athletes_path.should eq contributor_dashboard_path
end
it "returns nil if the user has no Contributor or School Admin role" do
@user.my_athletes_path.should be_nil
end
end
describe "#first_time_login?" do
it "will evalute true if the user has logged in only once" do
@user.sign_in_count = 1
@user.save
@user.first_time_login?.should be_true
end
end
describe "#confirmation_required?" do
it "returns false" do
@user.confirmation_required?.should be_false
end
end
describe "#primary_sport", focus: true do
context "when user has no primary sport" do
it "returns nil" do
@user.primary_sport.should be_nil
end
end
context "when user has a primary sport" do
it "returns sport object" do
@user.sports << create(:sport)
@user.primary_sport.should eq @user.sports.first
end
end
end
end
end
这是我收到的错误：
Failure/Error: @user.primary_sport.should eq @user.sports.first
NoMethodError:
undefined method sport for nil:NilClass
这是因为在user_sport用户工厂中创建关联时，该primary列被设置为false。不知道如何解决这个问题。任何帮助是极大的赞赏！另外，对于TDD方面的无知，我很抱歉，我是新手