generate pangram exercise (#279)

* generate pangram exercise

bin/generate-pangram

@@ -0,0 +1,6 @@
+#!/usr/bin/env ruby
+
+require_relative '../lib/generator'
+require_relative '../lib/pangram_cases'
+
+Generator.new('pangram', PangramCases).generate

config.json

@@ -10,6 +10,7 @@
     "rna-transcription",
     "raindrops",
     "difference-of-squares",
+    "pangram",
     "roman-numerals",
     "robot-name",
     "nth-prime",

exercises/pangram/.version

@@ -0,0 +1 @@
+1

exercises/pangram/example.rb

@@ -0,0 +1,8 @@
+class Pangram
+  VERSION = 1
+
+  def self.is_pangram?(str)
+    downcased_str = str.downcase
+    ('a'..'z').all? { |letter| downcased_str.include?(letter) }
+  end
+end

exercises/pangram/example.tt

@@ -0,0 +1,28 @@
+#!/usr/bin/env ruby
+gem 'minitest', '>= 5.0.0'
+require 'minitest/autorun'
+require_relative 'pangram'
+
+# Test data version:
+# <%= sha1 %>
+class PangramTest < Minitest::Test<% test_cases.each do |test_case| %>
+  def <%= test_case.name %><% if test_case.skipped? %>
+    skip<% end %>
+    str = '<%= test_case.input %>'<% if test_case.expected %>
+    assert<% else %>
+    refute<% end %> <%= test_case.do %>
+  end
+<% end %>
+  # Problems in exercism evolve over time,
+  # as we find better ways to ask questions.
+  # The version number refers to the version of the problem you solved,
+  # not your solution.
+  #
+  # Define a constant named VERSION inside of Pangram.
+  # If you are curious, read more about constants on RubyDoc:
+  # http://ruby-doc.org/docs/ruby-doc-bundle/UsersGuide/rg/constants.html
+  def test_bookkeeping
+    skip
+    assert_equal <%= version+1 %>, Pangram::VERSION
+  end
+end

exercises/pangram/pangram_test.rb

@@ -0,0 +1,51 @@
+#!/usr/bin/env ruby
+gem 'minitest', '>= 5.0.0'
+require 'minitest/autorun'
+require_relative 'pangram'
+
+# Test data version:
+# 180638f Merge pull request #217 from ErikSchierboom/patch-2
+
+class PangramTest < Minitest::Test
+  def test_sentence_empty
+    str = ''
+    refute Pangram.is_pangram?(str)
+  end
+
+  def test_pangram_with_only_lower_case
+    skip
+    str = 'the quick brown fox jumps over the lazy dog'
+    assert Pangram.is_pangram?(str)
+  end
+
+  def test_missing_character_x
+    skip
+    str = 'a quick movement of the enemy will jeopardize five gunboats'
+    refute Pangram.is_pangram?(str)
+  end
+
+  def test_pangram_with_mixed_case_and_punctuation
+    skip
+    str = '"Five quacking Zephyrs jolt my wax bed."'
+    assert Pangram.is_pangram?(str)
+  end
+
+  def test_pangram_with_non_ascii_characters
+    skip
+    str = 'Victor jagt zwölf Boxkämpfer quer über den großen Sylter Deich.'
+    assert Pangram.is_pangram?(str)
+  end
+
+  # Problems in exercism evolve over time,
+  # as we find better ways to ask questions.
+  # The version number refers to the version of the problem you solved,
+  # not your solution.
+  #
+  # Define a constant named VERSION inside of Pangram.
+  # If you are curious, read more about constants on RubyDoc:
+  # http://ruby-doc.org/docs/ruby-doc-bundle/UsersGuide/rg/constants.html
+  def test_bookkeeping
+    skip
+    assert_equal 1, Pangram::VERSION
+  end
+end

lib/pangram_cases.rb

@@ -0,0 +1,19 @@
+class PangramCase < OpenStruct
+  def name
+    'test_%s' % description.delete("'").gsub(/[ -]/, '_')
+  end
+
+  def do
+    'Pangram.is_pangram?(str)'
+  end
+
+  def skipped?
+    index > 0
+  end
+end
+
+PangramCases = proc do |data|
+  JSON.parse(data)['cases'].map.with_index do |row, i|
+    PangramCase.new(row.merge('index' => i))
+  end
+end