diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/.DS_Store differ
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..88e6cb8
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,26 @@
+name: Test
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: 3.2.2
+    - name: Cache gems
+      uses: actions/cache@v1
+      with:
+        path: vendor/bundle
+        key: ${{ runner.os }}-rubydeps-${{ hashFiles('Gemfile.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-rubydeps-
+    - name: Install gems
+      run: |
+        bundle config path vendor/bundle
+        bundle install --jobs 4 --retry 3
+    - name: Run Rubocop
+      run: bundle exec rubocop --parallel
+    - name: Run tests
+      run: bundle exec rake test
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..97f1a26
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+inputs/*.txt
+.session
diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..82a04cb
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,282 @@
+AllCops:
+  TargetRubyVersion: 3.2.2
+  SuggestExtensions: false
+  NewCops: enable
+  Exclude:
+    - 'bin/*'
+    - 'vendor/**/*'
+Layout/ArgumentAlignment:
+  Enabled: true
+  EnforcedStyle: with_fixed_indentation
+Metrics/PerceivedComplexity:
+  Enabled: true
+  Max: 50
+Metrics/CyclomaticComplexity:
+  Enabled: true
+  Max: 50
+Layout/ClosingParenthesisIndentation:
+  Enabled: false
+Layout/EmptyLinesAroundClassBody:
+  Enabled: false
+Layout/EmptyLinesAroundModuleBody:
+  Enabled: false
+Layout/EmptyLinesAroundBlockBody:
+  Enabled: false
+Layout/EmptyLinesAroundAttributeAccessor:
+  Enabled: true
+Layout/FirstHashElementIndentation:
+  Enabled: true
+  EnforcedStyle: consistent
+Layout/LineLength:
+  Max: 120
+Layout/MultilineMethodCallBraceLayout:
+  Enabled: false
+Layout/ParameterAlignment:
+  Enabled: false
+  EnforcedStyle: with_fixed_indentation
+Layout/SpaceAroundMethodCallOperator:
+  Enabled: true
+Lint/DeprecatedOpenSSLConstant:
+  Enabled: true
+Lint/RaiseException:
+  Enabled: true
+Lint/StructNewOverride:
+  Enabled: true
+Metrics/BlockLength:
+  Exclude:
+    - 'Rakefile'
+    - '**/*.rake'
+    - 'spec/**/*.rb'
+    - '*.gemspec'
+  Max: 100
+Metrics/MethodLength:
+  Enabled: true
+  Max: 100
+  Exclude:
+    - '**/*.rake'
+Metrics/ModuleLength:
+  Enabled: true
+  Exclude:
+    - 'spec/**/*.rb'
+Metrics/AbcSize:
+  Max: 100
+Metrics/ClassLength:
+  Enabled: false
+Metrics/ParameterLists:
+  Enabled: true
+Style/ClassAndModuleChildren:
+  Enabled: false
+Style/Documentation:
+  Enabled: false
+Style/EmptyMethod:
+  Enabled: false
+Style/ExponentialNotation:
+  Enabled: true
+Style/FrozenStringLiteralComment:
+  Enabled: false
+Style/GuardClause:
+  MinBodyLength: 3
+Style/HashEachMethods:
+  Enabled: true
+Style/HashTransformKeys:
+  Enabled: true
+Style/HashTransformValues:
+  Enabled: true
+Style/RedundantReturn:
+  Enabled: false
+Style/SlicingWithRange:
+  Enabled: true
+Style/SymbolArray:
+  Enabled: false
+Style/WordArray:
+  Enabled: false
+Lint/DuplicateElsifCondition:
+  Enabled: true
+Lint/MixedRegexpCaptureTypes:
+  Enabled: true
+Style/AccessorGrouping:
+  Enabled: true
+Style/ArrayCoercion:
+  Enabled: true
+Style/BisectedAttrAccessor:
+  Enabled: true
+Style/CaseLikeIf:
+  Enabled: true
+Style/HashAsLastArrayItem:
+  Enabled: true
+Style/HashLikeCase:
+  Enabled: true
+Style/RedundantAssignment:
+  Enabled: true
+Style/RedundantFetchBlock:
+  Enabled: true
+Style/RedundantFileExtensionInRequire:
+  Enabled: true
+Style/RedundantRegexpCharacterClass:
+  Enabled: true
+Style/RedundantRegexpEscape:
+  Enabled: true
+Lint/BinaryOperatorWithIdenticalOperands:
+  Enabled: true
+Lint/DuplicateRescueException:
+  Enabled: true
+Lint/EmptyConditionalBody:
+  Enabled: true
+Lint/FloatComparison:
+  Enabled: true
+Lint/MissingSuper:
+  Enabled: true
+Lint/OutOfRangeRegexpRef:
+  Enabled: true
+Lint/SelfAssignment:
+  Enabled: true
+Lint/TopLevelReturnWithArgument:
+  Enabled: true
+Lint/UnreachableLoop:
+  Enabled: true
+Style/ExplicitBlockArgument:
+  Enabled: true
+Style/GlobalStdStream:
+  Enabled: true
+Style/OptionalBooleanParameter:
+  Enabled: true
+Style/SingleArgumentDig:
+  Enabled: true
+Style/StringConcatenation:
+  Enabled: true
+Layout/BeginEndAlignment: # (new in 0.91)
+  Enabled: true
+Lint/ConstantDefinitionInBlock: # (new in 0.91)
+  Enabled: true
+Lint/DuplicateRequire: # (new in 0.90)
+  Enabled: true
+Lint/EmptyFile: # (new in 0.90)
+  Enabled: true
+Lint/HashCompareByIdentity: # (new in 0.93)
+  Enabled: true
+Lint/IdentityComparison: # (new in 0.91)
+  Enabled: true
+Lint/RedundantSafeNavigation: # (new in 0.93)
+  Enabled: true
+Lint/TrailingCommaInAttributeDeclaration: # (new in 0.90)
+  Enabled: true
+Lint/UselessMethodDefinition: # (new in 0.90)
+  Enabled: true
+Lint/UselessTimes: # (new in 0.91)
+  Enabled: true
+Style/ClassEqualityComparison: # (new in 0.93)
+  Enabled: true
+Style/CombinableLoops: # (new in 0.90)
+  Enabled: true
+Style/KeywordParametersOrder: # (new in 0.90)
+  Enabled: true
+Style/RedundantSelfAssignment: # (new in 0.90)
+  Enabled: true
+Style/SoleNestedConditional: # (new in 0.89)
+  Enabled: true
+Layout/SpaceBeforeBrackets: # (new in 1.7)
+  Enabled: true
+Lint/AmbiguousAssignment: # (new in 1.7)
+  Enabled: true
+Lint/DeprecatedConstants: # (new in 1.8)
+  Enabled: true
+Lint/DuplicateBranch: # (new in 1.3)
+  Enabled: true
+Lint/DuplicateRegexpCharacterClassElement: # (new in 1.1)
+  Enabled: true
+Lint/EmptyBlock: # (new in 1.1)
+  Enabled: true
+Lint/EmptyClass: # (new in 1.3)
+  Enabled: true
+Lint/LambdaWithoutLiteralBlock: # (new in 1.8)
+  Enabled: true
+Lint/NoReturnInBeginEndBlocks: # (new in 1.2)
+  Enabled: true
+Lint/RedundantDirGlobSort: # (new in 1.8)
+  Enabled: true
+Lint/ToEnumArguments: # (new in 1.1)
+  Enabled: true
+Lint/UnexpectedBlockArity: # (new in 1.5)
+  Enabled: true
+Lint/UnmodifiedReduceAccumulator: # (new in 1.1)
+  Enabled: true
+Style/ArgumentsForwarding: # (new in 1.1)
+  Enabled: true
+Style/CollectionCompact: # (new in 1.2)
+  Enabled: true
+Style/DocumentDynamicEvalDefinition: # (new in 1.1)
+  Enabled: true
+Style/EndlessMethod: # (new in 1.8)
+  Enabled: true
+Style/HashExcept: # (new in 1.7)
+  Enabled: true
+Style/NegatedIfElseCondition: # (new in 1.2)
+  Enabled: true
+Style/NilLambda: # (new in 1.3)
+  Enabled: true
+Style/RedundantArgument: # (new in 1.4)
+  Enabled: true
+Style/SwapValues: # (new in 1.1)
+  Enabled: true
+Lint/NumberedParameterAssignment: # (new in 1.9)
+  Enabled: true
+Lint/OrAssignmentToConstant: # (new in 1.9)
+  Enabled: true
+Lint/SymbolConversion: # (new in 1.9)
+  Enabled: true
+Lint/TripleQuotes: # (new in 1.9)
+  Enabled: true
+Style/IfWithBooleanLiteralBranches: # (new in 1.9)
+  Enabled: true
+Gemspec/DeprecatedAttributeAssignment: # (new in 1.10)
+  Enabled: true
+Style/HashConversion: # (new in 1.10)
+  Enabled: true
+Layout/LineEndStringConcatenationIndentation: # new in 1.18
+  Enabled: true
+Lint/AmbiguousOperatorPrecedence: # new in 1.21
+  Enabled: true
+Lint/AmbiguousRange: # new in 1.19
+  Enabled: true
+Lint/EmptyInPattern: # new in 1.16
+  Enabled: true
+Lint/IncompatibleIoSelectWithFiberScheduler: # new in 1.21
+  Enabled: true
+Lint/RequireRelativeSelfPath: # new in 1.22
+  Enabled: true
+Security/IoMethods: # new in 1.22
+  Enabled: true
+Style/InPatternThen: # new in 1.16
+  Enabled: true
+Style/MultilineInPatternThen: # new in 1.16
+  Enabled: true
+Style/NumberedParameters: # new in 1.22
+  Enabled: true
+Style/NumberedParametersLimit: # new in 1.22
+  Enabled: true
+Style/QuotedSymbols: # new in 1.16
+  Enabled: true
+Style/RedundantSelfAssignmentBranch: # new in 1.19
+  Enabled: true
+Style/SelectByRegexp: # new in 1.22
+  Enabled: true
+Style/StringChars: # new in 1.12
+  Enabled: true
+Gemspec/RequireMFA: # new in 1.23
+  Enabled: true
+Lint/UselessRuby2Keywords: # new in 1.23
+  Enabled: true
+Naming/BlockForwarding: # new in 1.24
+  Enabled: true
+Style/FileRead: # new in 1.24
+  Enabled: true
+Style/FileWrite: # new in 1.24
+  Enabled: true
+Style/MapToHash: # new in 1.24
+  Enabled: true
+Style/NestedFileDirname: # new in 1.26
+  Enabled: true
+Style/OpenStructUse: # new in 1.23
+  Enabled: false
+Style/NumericLiterals:
+  Enabled: false
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..be94e6f
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.2.2
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..f2d469e
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'debug'
+gem 'minitest'
+gem 'rake'
+gem 'rubocop'
+gem 'solargraph'
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..053f98b
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,94 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    backport (1.2.0)
+    benchmark (0.3.0)
+    debug (1.8.0)
+      irb (>= 1.5.0)
+      reline (>= 0.3.1)
+    diff-lcs (1.5.0)
+    e2mmap (0.1.0)
+    io-console (0.6.0)
+    irb (1.9.1)
+      rdoc
+      reline (>= 0.3.8)
+    jaro_winkler (1.5.6)
+    json (2.7.0)
+    kramdown (2.4.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    language_server-protocol (3.17.0.3)
+    minitest (5.20.0)
+    nokogiri (1.15.5-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.15.5-x64-mingw-ucrt)
+      racc (~> 1.4)
+    parallel (1.23.0)
+    parser (3.2.2.4)
+      ast (~> 2.4.1)
+      racc
+    psych (5.1.1.1)
+      stringio
+    racc (1.7.3)
+    rainbow (3.1.1)
+    rake (13.1.0)
+    rbs (2.8.4)
+    rdoc (6.6.0)
+      psych (>= 4.0.0)
+    regexp_parser (2.8.2)
+    reline (0.4.1)
+      io-console (~> 0.5)
+    reverse_markdown (2.1.1)
+      nokogiri
+    rexml (3.2.6)
+    rubocop (1.58.0)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.2.2.4)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.30.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.13.0)
+    solargraph (0.49.0)
+      backport (~> 1.2)
+      benchmark
+      bundler (~> 2.0)
+      diff-lcs (~> 1.4)
+      e2mmap
+      jaro_winkler (~> 1.5)
+      kramdown (~> 2.3)
+      kramdown-parser-gfm (~> 1.1)
+      parser (~> 3.0)
+      rbs (~> 2.0)
+      reverse_markdown (~> 2.0)
+      rubocop (~> 1.38)
+      thor (~> 1.0)
+      tilt (~> 2.0)
+      yard (~> 0.9, >= 0.9.24)
+    stringio (3.1.0)
+    thor (1.3.0)
+    tilt (2.3.0)
+    unicode-display_width (2.5.0)
+    yard (0.9.34)
+
+PLATFORMS
+  arm64-darwin-21
+  x64-mingw-ucrt
+
+DEPENDENCIES
+  debug
+  minitest
+  rake
+  rubocop
+  solargraph
+
+BUNDLED WITH
+   2.3.22
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..dd37a57
--- /dev/null
+++ b/README.md
@@ -0,0 +1,27 @@
+# Advent of Code
+
+Ruby solutions to [Advent of Code](https://adventofcode.com/).
+
+## Requirements
+
+Install ruby 3.2.2, bundler, and the gems.
+
+```
+bundle install
+```
+
+## Use
+
+```
+# solve all
+rake solve:all
+
+# solve a specific day
+rake solve:7
+
+# run all tests
+rake test
+
+# run a specific test
+ruby ./test/07_test.rb
+```
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..a361f4b
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,72 @@
+require 'rake/testtask'
+require './app'
+require 'net/http'
+
+namespace :solve do
+
+  task :all do
+    runner = Aoc::Runner.new
+    (1..25).each { |i| runner.call(i) }
+  end
+
+  (1..25).each do |i|
+    desc "Run day #{i}"
+    task i.to_s.to_sym do
+      Aoc::Runner.new.call(i)
+    end
+  end
+end
+
+namespace :scaffold do
+  (1..25).each do |i|
+    task i.to_s.to_sym do
+      puts "🎁 Generate code for day #{i}..."
+
+      number = i.to_s.rjust(2, '0')
+      marker = '{DAY_NUMBER}'
+
+      ruby_file = File.join(APP_ROOT, 'lib', 'days', "#{number}.rb")
+      # raise '⛔ Stopping: Already exists' if File.exists?(ruby_file)
+
+      File.write(ruby_file, File.read(File.join(APP_ROOT, 'template', 'day')).sub(marker, number))
+      File.write(
+        File.join(APP_ROOT, 'test', "#{number}_test.rb"),
+        File.read(File.join(APP_ROOT, 'template', 'test')).gsub(marker, number)
+      )
+      File.write(File.join(APP_ROOT, 'examples', "#{number}.txt"), '')
+
+    end
+  end
+end
+
+namespace :download do
+
+  def download_input(number)
+    session_path = File.join(APP_ROOT, '.session')
+    return '' unless File.exist?(session_path)
+
+    puts "⬇️ Download day #{number} input"
+
+    response = Net::HTTP.get_response(
+      URI("https://adventofcode.com/2022/day/#{number}/input"),
+      { 'Cookie' => "session=#{File.read(session_path)}" }
+    )
+
+    if response.code == '200'
+      response.body
+    else
+      puts "💥 Download failed - #{response.message}"
+    end
+  end
+
+  (1..25).each do |i|
+    task i.to_s.to_sym do
+      number = i.to_s.rjust(2, '0')
+      File.write(File.join(APP_ROOT, 'inputs', "#{number}.txt"), download_input(i))
+    end
+  end
+end
+
+Rake::TestTask.new do |t|
+  t.pattern = 'test/*_test.rb'
+end
diff --git a/app.rb b/app.rb
new file mode 100644
index 0000000..3bf12de
--- /dev/null
+++ b/app.rb
@@ -0,0 +1,7 @@
+APP_ROOT = __dir__
+
+require 'debug'
+require 'rubygems'
+require 'bundler/setup'
+require './lib/runner'
+Dir['./lib/days/*.rb'].each { |f| require f }
diff --git a/bin/rake b/bin/rake
new file mode 100755
index 0000000..51e10c4
--- /dev/null
+++ b/bin/rake
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rake' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300) =~ /This file was generated by Bundler/
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rake", "rake")
diff --git a/bin/rake.cmd b/bin/rake.cmd
new file mode 100755
index 0000000..413267a
--- /dev/null
+++ b/bin/rake.cmd
@@ -0,0 +1,30 @@
+@ruby -x "%~f0" %*
+@exit /b %ERRORLEVEL%
+
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rake' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300) =~ /This file was generated by Bundler/
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rake", "rake")
diff --git a/bin/rubocop b/bin/rubocop
new file mode 100755
index 0000000..2b1fa1f
--- /dev/null
+++ b/bin/rubocop
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rubocop' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300) =~ /This file was generated by Bundler/
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rubocop", "rubocop")
diff --git a/bin/rubocop.cmd b/bin/rubocop.cmd
new file mode 100755
index 0000000..46028af
--- /dev/null
+++ b/bin/rubocop.cmd
@@ -0,0 +1,30 @@
+@ruby -x "%~f0" %*
+@exit /b %ERRORLEVEL%
+
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rubocop' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300) =~ /This file was generated by Bundler/
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rubocop", "rubocop")
diff --git a/examples/01.text b/examples/01.text
new file mode 100644
index 0000000..e69de29
diff --git a/inputs/.keep b/inputs/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/lib/days/01.rb b/lib/days/01.rb
new file mode 100644
index 0000000..9fc4372
--- /dev/null
+++ b/lib/days/01.rb
@@ -0,0 +1,11 @@
+class Day01
+
+  def part1(input)
+    'TODO'
+  end
+
+  def part2(input)
+    'TODO'
+  end
+
+end
diff --git a/lib/runner.rb b/lib/runner.rb
new file mode 100644
index 0000000..d88e509
--- /dev/null
+++ b/lib/runner.rb
@@ -0,0 +1,39 @@
+module Aoc
+  class Runner
+
+    def call(number)
+      day = get_day_class(number)
+      return unless day
+
+      input_path = File.join(APP_ROOT, 'inputs', "#{number.to_s.rjust(2, '0')}.txt")
+      raise 'Input does not exist' unless File.exist?(input_path)
+
+      input_data = File.read(input_path).rstrip
+
+      puts <<~HERE
+        Day #{number} #{emoji_for(number)}#{' '}
+        - 1: #{day.part1(input_data)}
+        - 2: #{day.part2(input_data)}
+      HERE
+    end
+
+    private
+
+    def get_day_class(number)
+      Object.const_get("Day#{number.to_s.rjust(2, '0')}").new
+    rescue NameError
+      # puts "Day #{number} not implemented"
+    end
+
+    def emoji_for(number)
+      case number % 3
+      when 0
+        '🎄'
+      when 1
+        '❄️'
+      when 2
+        '🎁'
+      end
+    end
+  end
+end
diff --git a/template/day b/template/day
new file mode 100644
index 0000000..e2c8058
--- /dev/null
+++ b/template/day
@@ -0,0 +1,11 @@
+class Day{DAY_NUMBER}
+
+  def part1(input)
+    'TODO'
+  end
+
+  def part2(input)
+    'TODO'
+  end
+
+end
diff --git a/template/test b/template/test
new file mode 100644
index 0000000..1ca589e
--- /dev/null
+++ b/template/test
@@ -0,0 +1,17 @@
+require 'minitest/autorun'
+require_relative '../app'
+
+class TestDay{DAY_NUMBER} < Minitest::Test
+  def setup
+    @data = File.read(File.join(APP_ROOT, 'examples', '{DAY_NUMBER}.txt')).rstrip
+    @day = Day{DAY_NUMBER}.new
+  end
+
+  def test_part1
+    assert_equal @day.part1(@data), ''
+  end
+
+  def test_part2
+    assert_equal @day.part2(@data), ''
+  end
+end
diff --git a/test/01_test.rb b/test/01_test.rb
new file mode 100644
index 0000000..a0d58de
--- /dev/null
+++ b/test/01_test.rb
@@ -0,0 +1,17 @@
+require 'minitest/autorun'
+require_relative '../app'
+
+class TestDay01 < Minitest::Test
+  def setup
+    @data = File.read(File.join(APP_ROOT, 'examples', '01.txt')).rstrip
+    @day = Day01.new
+  end
+
+  def test_part1
+    assert_equal @day.part1(@data), ''
+  end
+
+  def test_part2
+    assert_equal @day.part2(@data), ''
+  end
+end