Fixes tests

app/models/repository_checkbox_item.rb

@@ -7,8 +7,8 @@ class RepositoryCheckboxItem < ApplicationRecord
                              maximum: Constants::NAME_MAX_LENGTH }
   belongs_to :repository, inverse_of: :repository_checklist_items
   belongs_to :repository_column
-  belongs_to :created_by, foreign_key: 'created_by_id', class_name: 'User', optional: true,
+  belongs_to :created_by, foreign_key: 'created_by_id', class_name: 'User',
              inverse_of: :created_repository_checkbox_types
-  belongs_to :last_modified_by, foreign_key: 'last_modified_by_id', class_name: 'User', optional: true,
+  belongs_to :last_modified_by, foreign_key: 'last_modified_by_id', class_name: 'User',
              inverse_of: :modified_repository_checkbox_types
 end

app/models/repository_checkbox_value.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 class RepositoryCheckboxValue < ApplicationRecord
-  belongs_to :created_by, foreign_key: 'created_by_id', class_name: 'User', optional: true,
-             inverse_of: :created_repository_checkbox_value
-  belongs_to :last_modified_by, foreign_key: 'last_modified_by_id', class_name: 'User', optional: true,
-             inverse_of: :modified_repository_checkbox_value
+  belongs_to :created_by, foreign_key: 'created_by_id', class_name: 'User',
+             inverse_of: :created_repository_checkbox_values
+  belongs_to :last_modified_by, foreign_key: 'last_modified_by_id', class_name: 'User',
+             inverse_of: :modified_repository_checkbox_values
   has_one :repository_cell, as: :value, dependent: :destroy, inverse_of: :value
   accepts_nested_attributes_for :repository_cell
 

spec/factories/repository_cells.rb

@@ -45,5 +45,12 @@ FactoryBot.define do
         repository_cell.value ||= build(:repository_date_time_range_value, repository_cell: repository_cell)
       end
     end
+
+    trait :checkbox_value do
+      repository_column { create :repository_column, :date_time_range_type, repository: repository_row.repository }
+      after(:build) do |repository_cell|
+        repository_cell.value ||= build(:repository_checkbox_value, repository_cell: repository_cell)
+      end
+    end
   end
 end

spec/factories/repository_checkbox_values.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :repository_checkbox_value do
+    created_by { create :user }
+    last_modified_by { created_by }
+    repository_checkboxes_items { [] }
+  end
+end

spec/models/repository_checkbox_item_spec.rb

@@ -31,7 +31,7 @@ RSpec.describe RepositoryCheckboxItem, type: :model do
   describe 'Validations' do
     describe '#data' do
       it { is_expected.to validate_presence_of(:data) }
-      it { is_expected.to validate_length_of(:data).is_at_most(Constants::TEXT_MAX_LENGTH) }
+      it { is_expected.to validate_length_of(:data).is_at_most(Constants::NAME_MAX_LENGTH) }
       it {
         expect(repository_checkbox_item).to validate_uniqueness_of(:data)
           .scoped_to(:repository_column_id).case_insensitive

spec/models/repository_checkbox_value_spec.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe RepositoryCheckboxValue, type: :model do
+  let(:repository_checkbox_value) { build :repository_checkbox_value }
+
+  it 'is valid' do
+    expect(repository_checkbox_value).to be_valid
+  end
+
+  it 'should be of class RepositoryCheckboxValue' do
+    expect(subject.class).to eq RepositoryCheckboxValue
+  end
+
+  describe 'Database table' do
+    it { should have_db_column :created_by_id }
+    it { should have_db_column :last_modified_by_id }
+    it { should have_db_column :repository_checkboxes_items }
+  end
+
+  describe 'Relations' do
+    it { should belong_to(:created_by).class_name('User') }
+    it { should belong_to(:last_modified_by).class_name('User') }
+    it { should accept_nested_attributes_for(:repository_cell) }
+  end
+end