Add tests for bucket sort

sorting/bucket_sort.rb

@@ -19,7 +19,10 @@ def bucket_sort(array, bucket_size = DEFAULT_BUCKET_SIZE)
 
   buckets.flatten
 end
+
+if $0 == __FILE__
   puts 'Enter a list of numbers separated by space'
 
-list = gets
-print bucket_sort(list)
+  list = gets.split.map(&:to_i)
+  p bucket_sort(list)
+end

sorting/bucket_sort_test.rb

@@ -0,0 +1,11 @@
+require 'minitest/autorun'
+require_relative './sort_tests'
+require_relative './bucket_sort'
+
+class TestBucketSort < Minitest::Test
+  include SortTests
+
+  def sort(input)
+    bucket_sort(input)
+  end
+end