Fix rubocop style offenses

Rakefile

@@ -8,10 +8,10 @@ RSpec::Core::RakeTask.new(:spec)
 
 task default: :spec
 
-task :process, [:input_file] do |t, args|
+task :process, [:input_file] do |_t, args|
   file = File.open(args.input_file, 'r')
 
-  shipping_option_repository = PlanetExpress::ShippingOptionRepository.new()
+  shipping_option_repository = PlanetExpress::ShippingOptionRepository.new
   shipment_repository = PlanetExpress::ShipmentRepository.new(data: [])
   discount_budget_for_month_repository = PlanetExpress::DiscountBudgetForMonthRepository.new
 
@@ -22,16 +22,19 @@ task :process, [:input_file] do |t, args|
     PlanetExpress::SShipmentDiscountRule.new(
       discount_budget_for_month_repository: discount_budget_for_month_repository,
       shipping_option_repository: shipping_option_repository,
-      shipment_repository: shipment_repository),
+      shipment_repository: shipment_repository
+    ),
     PlanetExpress::LShipmentDiscountRule.new(
       discount_budget_for_month_repository: discount_budget_for_month_repository,
       shipping_option_repository: shipping_option_repository,
-      shipment_repository: shipment_repository)
+      shipment_repository: shipment_repository
+    )
   ]
 
   PlanetExpress::ShipmentDiscountCalculator.new(
     shipment_repository: shipment_repository,
-    rules: rules).run(shipment_reader)
+    rules: rules
+  ).run(shipment_reader)
 
   shipment_repository.each do |shipment|
     puts shipment_formatter.format(shipment)

lib/planet_express/date.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'date'
 
 # Nasty monkey patching to make date objects know about the beginning of a month

lib/planet_express/discounts/discount.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   Discount = Struct.new(:amount, :rule) do
     def inspect

lib/planet_express/discounts/discount_budget_for_month_repository.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class DiscountBudgetForMonthRepository
     DEFAULT_BUDGET = 1000

lib/planet_express/repository.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class Repository
     include Enumerable
@@ -12,10 +14,8 @@ module PlanetExpress
       data
     end
 
-    def each
-      data.each do |item|
-        yield item
-      end
+    def each(&block)
+      data.each(&block)
     end
 
     def add(item)

lib/planet_express/rules/l_shipment_discount_rule.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class LShipmentDiscountRule < Rule
     protected

lib/planet_express/rules/s_shipment_discount_rule.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class SShipmentDiscountRule < Rule
     protected

lib/planet_express/shipment_discount_calculator.rb

@@ -1,6 +1,9 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class ShipmentDiscountCalculator
     attr_reader :shipment_repository, :rules
+
     def initialize(shipment_repository:,
                    rules:)
       @shipment_repository = shipment_repository

lib/planet_express/shipments/invalid_shipment.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class InvalidShipment
     attr_reader :raw_string
@@ -6,8 +8,8 @@ module PlanetExpress
       @raw_string = raw_string
     end
 
-    def if_valid(&block)
-      return
+    def if_valid
+      nil
     end
   end
 end

lib/planet_express/shipments/shipment.rb

@@ -38,7 +38,7 @@ module PlanetExpress
       shipping_option.provider
     end
 
-    def if_valid(&block)
+    def if_valid
       yield self
     end
 

lib/planet_express/shipments/shipment_formatter.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class ShipmentFormatter
     def format(shipment)

lib/planet_express/shipments/shipment_reader.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'csv'
 
 module PlanetExpress
@@ -16,7 +18,7 @@ module PlanetExpress
         shipping_option = find_shipping_option(row)
 
         if date.nil? || shipping_option.nil?
-          yield InvalidShipment.new(row.join(" "))
+          yield InvalidShipment.new(row.join(' '))
         else
           yield Shipment.new(date, shipping_option)
         end
@@ -30,11 +32,9 @@ module PlanetExpress
     end
 
     def parse_date(row)
-      begin
-        return Date.iso8601(row[0])
+      Date.iso8601(row[0])
     rescue ArgumentError => _e
       nil
     end
   end
 end
-end

lib/planet_express/shipments/shipment_repository.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PlanetExpress
   class ShipmentRepository < Repository
     def rule_applied_in_month?(month, rule)

lib/planet_express/shipping_options/shipping_option_repository.rb

@@ -3,6 +3,7 @@
 module PlanetExpress
   class ShippingOptionRepository < Repository
     attr_reader :data
+
     def initialize(data: nil)
       @data = data || default_data
     end

planet_express.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency('rubocop', '~> 1.11')
   spec.add_development_dependency('factory_bot', '~> 6.1')
+  spec.add_development_dependency('rubocop', '~> 1.11')
   spec.add_development_dependency('simplecov', '~> 0.21')
 end

spec/discount_budget_for_month_spec.rb

@@ -6,10 +6,10 @@ RSpec.describe PlanetExpress::DiscountBudgetForMonthRepository do
   let(:march_date_b) { Date.new(2021, 3, 6) }
 
   describe '#for_month' do
-
     it 'returns the same discount budget for the same month' do
       expect(subject.for_month(march_date_a).object_id).to(
-          eq(subject.for_month(march_date_b).object_id))
+        eq(subject.for_month(march_date_b).object_id)
+      )
     end
 
     context 'not yet initialized month' do
@@ -24,9 +24,9 @@ RSpec.describe PlanetExpress::DiscountBudgetForMonthRepository do
     context 'other month' do
       let(:april_date) { Date.new(2021, 4, 12) }
       it 'returns a different discount budget' do
-
         expect(subject.for_month(march_date_a).object_id).to_not(eq(
-          subject.for_month(april_date).object_id))
+                                                                   subject.for_month(april_date).object_id
+                                                                 ))
       end
     end
   end

spec/factories/shipping_options.rb

@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 FactoryBot.define do
   factory :shipping_option, class: PlanetExpress::ShippingOption do
     sequence(:provider) { 'LP' }
-    sequence(:package_size) { ['S', 'M', 'L'].sample }
+    sequence(:package_size) { %w[S M L].sample }
     sequence(:price_in_cents) { |i| i * 100 }
   end
 end

spec/l_shipment_discount_rule_spec.rb

@@ -9,7 +9,8 @@ RSpec.describe PlanetExpress::LShipmentDiscountRule do
     described_class.new(
       discount_budget_for_month_repository: budget_repo,
       shipping_option_repository: shipping_option_repo,
-      shipment_repository: shipment_repo)
+      shipment_repository: shipment_repo
+    )
   end
 
   let(:correct_shipping_option) do

spec/repository_spec.rb

@@ -13,13 +13,12 @@ RSpec.describe PlanetExpress::Repository do
 
   subject { described_class.new(data: entries) }
 
-
   describe '#where' do
     context 'no data' do
       let(:entries) { [] }
 
       it 'returns an empty array' do
-        expect(subject.where()).to eq([])
+        expect(subject.where).to eq([])
       end
     end
 
@@ -29,7 +28,7 @@ RSpec.describe PlanetExpress::Repository do
       end
 
       it 'returns all items' do
-        expect(subject.where()).to eq(subject.all)
+        expect(subject.where).to eq(subject.all)
       end
     end
 
@@ -41,7 +40,7 @@ RSpec.describe PlanetExpress::Repository do
       let(:entries) { repository_items + [expected_item] }
 
       it 'returns a list with the expected item' do
-        expect(subject.where(test_attribute_a: 150, test_attribute_b: "Testing")).to eq([expected_item])
+        expect(subject.where(test_attribute_a: 150, test_attribute_b: 'Testing')).to eq([expected_item])
       end
     end
 

spec/s_shipment_discount_rule_spec.rb

@@ -9,11 +9,11 @@ RSpec.describe PlanetExpress::SShipmentDiscountRule do
     described_class.new(
       discount_budget_for_month_repository: budget_repo,
       shipping_option_repository: shipping_option_repo,
-      shipment_repository: shipment_repo)
+      shipment_repository: shipment_repo
+    )
   end
 
   context 's_shipment' do
-
     context 'more expensive than cheapest option' do
       let(:shipping_option) do
         shipping_option_repo.find_by_provider_and_package_size('MR', 'S')

spec/shipment_discount_calculator_spec.rb

@@ -5,7 +5,7 @@ RSpec.describe PlanetExpress::ShipmentDiscountCalculator do
     PlanetExpress::ShippingOptionRepository.new(data: [])
   end
   let(:rule) do
-    double("Rule")
+    double('Rule')
   end
   let(:rules) do
     [rule]

spec/shipment_formatter_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe PlanetExpress::ShipmentFormatter do
   describe '#format' do
     context 'invalid shipment' do
       let(:shipment) do
-        PlanetExpress::InvalidShipment.new("Invalid Shipment")
+        PlanetExpress::InvalidShipment.new('Invalid Shipment')
       end
 
       it 'returns a well formatted string' do

spec/shipment_reader_spec.rb

@@ -9,7 +9,7 @@ RSpec.describe PlanetExpress::ShipmentReader do
 
   describe '#each' do
     context 'with a file' do
-      let(:input) { File.read(File.expand_path('../fixtures/shipment_input_file.txt', __FILE__)) }
+      let(:input) { File.read(File.expand_path('fixtures/shipment_input_file.txt', __dir__)) }
       let(:result) { subject.to_a }
 
       it 'parses the file' do

spec/shipment_repository_spec.rb

@@ -17,7 +17,7 @@ RSpec.describe PlanetExpress::ShipmentRepository do
     end
 
     context 'with invalid shipments' do
-      let(:items) { [PlanetExpress::InvalidShipment.new("")] }
+      let(:items) { [PlanetExpress::InvalidShipment.new('')] }
       it 'returns false' do
         result = subject.rule_applied_in_month?(Date.today.begin_of_month,
                                                 PlanetExpress::Rule)
@@ -53,7 +53,7 @@ RSpec.describe PlanetExpress::ShipmentRepository do
       end
 
       let(:other_rule) do
-        -> () {}
+        -> {}
       end
 
       let(:shipment) do
@@ -80,18 +80,20 @@ RSpec.describe PlanetExpress::ShipmentRepository do
       it 'returns 0' do
         result = subject.l_shipment_count_for_provider_and_month(
           'LP',
-          Date.today.begin_of_month)
+          Date.today.begin_of_month
+        )
 
         expect(result).to eq(0)
       end
     end
 
     context 'with invalid shipments' do
-      let(:items) { [PlanetExpress::InvalidShipment.new("")] }
+      let(:items) { [PlanetExpress::InvalidShipment.new('')] }
       it 'returns 0' do
         result = subject.l_shipment_count_for_provider_and_month(
           'LP',
-          Date.today.begin_of_month)
+          Date.today.begin_of_month
+        )
 
         expect(result).to eq(0)
       end
@@ -142,9 +144,6 @@ RSpec.describe PlanetExpress::ShipmentRepository do
           expect(result).to eq(0)
         end
       end
-
     end
-
   end
-
 end