SimpleCov calculate 0% coverage for user model

Question

I decided to try using simplecov gem, and I think it's a cool tool, but I have one problem:

I have a model User, and I have user_spec.rb which contains test cases, but simplecov shows 0% coverage of this model. And it shows 100% coverage for other models, which is true. I don't understand what's the issue with the User model.

class User < ActiveRecord::Base

  extend Enumerize

  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  STATUS_ACTIVE = :active
  STATUS_BANNED = :banned

  enumerize :status, in: [STATUS_ACTIVE, STATUS_BANNED], default: STATUS_ACTIVE

  with_options inverse_of: :user, dependent: :destroy do
    has_one :profile
    has_many :articles
  end

  before_create :build_default_profile

  private

  def build_default_profile
    build_profile
  end

end

user_spec.rb

 require 'rails_helper'
    
    RSpec.describe User, type: :model do
    
      describe '#validations' do
        it { should have_one(:profile).dependent(:destroy) }
    
        it { should validate_presence_of(:email) }
        it { should validate_presence_of(:password) }
        it { should validate_confirmation_of(:password) }
    
        it { should enumerize(:status).in(User::STATUS_ACTIVE, User::STATUS_BANNED).with_default(User::STATUS_ACTIVE) }
    
        #TODO other devise validations
      end
    
      describe '#callbacks' do
        it 'creates profile after_create' do
          user = build(:user)
          expect(user.profile).to be_nil
          user.save
          expect(user.profile).to be_a(Profile)
        end
    
        it 'must not create profile after update' do
          user = create(:user)
          profile = user.profile
          user.email = Faker::Internet.email
          user.save
          expect(profile.id).to eq(Profile.find_by(user_id: user.id).id)
        end
      end
    
    end

coverage

File                 % covered Lines Relevant Lines Lines covered   Lines missed    Avg. Hits / Line
app/models/user.rb      0.0 %   28  28  0   28  0.0
app/models/admin.rb     100.0 % 3   1   1   0   1.0
app/models/article.rb   100.0 % 32  19  19  0   5.8
app/models/profile.rb   100.0 % 13  6   6   0   1.0

Answer 1

Make sure that you are starting SimpleCov correctly. In your case,

Load and launch SimpleCov at the very top of your rails_helper.rb

See more: https://github.com/colszowka/simplecov#getting-started