Add christmas_day kata

Author: Bodacious

katas/3-christmas_day/README.md

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+# The Ghost of Christmas Past
+
+Christmas this year falls on a Wednesday! 
+
+But on which day did Christmas fall in years past?
+
+## Problem Description
+
+Write a Ruby class that returns the correct weekday of Christmas Day for years past.  
+
+## Requirements and Constraints
+
+### Requirements 
+
+Your code should return the day of the week that Christmas Day was:
+- Officially celebrated
+- In England
+- Using the relative local date and time
+
+### Constraints 
+
+**You may not use Ruby's Date, Time or any other third party library to perform date computations for you**.
+
+### Input Specifications
+
+See the attached tests.
+
+### Output Specifications
+
+See the attached tests. All tests must pass!
+
+## Examples and Test Cases
+
+See the attached tests.
+
+## Getting started 
+
+1. Make sure your local repository is up to date with origin and you are on the `main` branch.
+2. `bin/cleo_katas attempt christmas_day`
+3. `ruby katas/3-christmas_day/[yourname]/test.rb`

katas/3-christmas_day/source/main.rb

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+require 'bundler/inline'
+require 'date'
+gemfile do
+  source 'https://rubygems.org'
+  gem 'minitest'
+end
+
+class ChristmasDay
+end

katas/3-christmas_day/source/test.rb

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+require_relative 'main'
+require 'minitest/autorun'
+
+class ChristmasDayTest < Minitest::Test
+  def test_returns_the_correct_weekday_for_2024
+    skip 'Not implemented'
+    assert_equal 'Wednesday', ChristmasDay.new(2024).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_2001
+    skip 'Not implemented'
+    assert_equal 'Tuesday', ChristmasDay.new(2001).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_1900
+    skip 'Not implemented'
+    assert_equal 'Tuesday', ChristmasDay.new(1900).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_1752
+    skip 'Not implemented'
+    assert_equal 'Monday', ChristmasDay.new(1752).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_1751
+    skip 'Not implemented'
+    assert_equal 'Friday', ChristmasDay.new(1751).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_1660
+    skip 'Not implemented'
+    assert_equal 'Wednesday', ChristmasDay.new(1660).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_1659
+    skip 'Not implemented'
+    assert_raises { ChristmasDay.new(1659).weekday }
+  end
+
+  def test_returns_the_correct_weekday_for_1644
+    skip 'Not implemented'
+    assert_raises { ChristmasDay.new(1644).weekday }
+  end
+
+  def test_returns_the_correct_weekday_for_1643
+    skip 'Not implemented'
+    assert_equal 'Wednesday', ChristmasDay.new(1643).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_1066
+    skip 'Not implemented'
+    assert_equal 'Wednesday', ChristmasDay.new(1066).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_597
+    skip 'Not implemented'
+    assert_equal 'Friday', ChristmasDay.new(597).weekday
+  end
+
+  def test_returns_the_correct_weekday_for_596
+    skip 'Not implemented'
+    assert_raises { ChristmasDay.new(596).weekday }
+  end
+end