From cc9d7e88a7d5b35e15413f34acc2f406e72b354a Mon Sep 17 00:00:00 2001
From: Chase Clettenberg <clettenberg@gmail.com>
Date: Sun, 31 Jul 2016 20:22:54 -0500
Subject: [PATCH] Created a generator for Nth Prime

---
 bin/generate-nth-prime                |  7 +++++
 exercises/nth-prime/.version          |  1 +
 exercises/nth-prime/example.rb        |  4 +++
 exercises/nth-prime/example.tt        | 23 ++++++++++++++
 exercises/nth-prime/nth_prime_test.rb | 43 ++++++++++++++++++++-------
 lib/nth_prime_cases.rb                | 23 ++++++++++++++
 6 files changed, 91 insertions(+), 10 deletions(-)
 create mode 100755 bin/generate-nth-prime
 create mode 100644 exercises/nth-prime/.version
 create mode 100644 exercises/nth-prime/example.tt
 create mode 100644 lib/nth_prime_cases.rb

diff --git a/bin/generate-nth-prime b/bin/generate-nth-prime
new file mode 100755
index 0000000000..306a6eb2ae
--- /dev/null
+++ b/bin/generate-nth-prime
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+
+require_relative '../lib/helper'
+require 'generator'
+require 'nth_prime_cases'
+
+Generator.new('nth-prime', NthPrimeCases).generate
diff --git a/exercises/nth-prime/.version b/exercises/nth-prime/.version
new file mode 100644
index 0000000000..56a6051ca2
--- /dev/null
+++ b/exercises/nth-prime/.version
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/exercises/nth-prime/example.rb b/exercises/nth-prime/example.rb
index 6a8f1b1152..79ab25396e 100644
--- a/exercises/nth-prime/example.rb
+++ b/exercises/nth-prime/example.rb
@@ -1,3 +1,7 @@
+module BookKeeping
+  VERSION = 1
+end
+
 class Prime
   def self.nth(n)
     if n < 1
diff --git a/exercises/nth-prime/example.tt b/exercises/nth-prime/example.tt
new file mode 100644
index 0000000000..822d6c5d49
--- /dev/null
+++ b/exercises/nth-prime/example.tt
@@ -0,0 +1,23 @@
+#!/usr/bin/env ruby
+gem 'minitest', '>= 5.0.0'
+require 'minitest/autorun'
+require_relative 'nth_prime'
+
+# Test data version:
+# <%= sha1 %>
+# Rubocop directives
+# rubocop:disable Style/NumericLiterals
+#
+class NthPrimeTest < Minitest::Test<% test_cases.each do |test_case| %>
+  def <%= test_case.name %><% if test_case.skipped? %>
+    skip<% end %><% if test_case.raises_error? %>
+    assert_raises(ArgumentError) { <%= test_case.actual %> }<% else %>
+    assert_equal <%= test_case.expected %>, <%= test_case.actual %><% end %>
+  end
+<% end %>
+<%= IO.read(XRUBY_LIB + '/bookkeeping.md') %>
+  def test_bookkeeping
+    skip
+    assert_equal <%= version.next %>, BookKeeping::VERSION
+  end
+end
diff --git a/exercises/nth-prime/nth_prime_test.rb b/exercises/nth-prime/nth_prime_test.rb
index 3c935b6041..8ae9b56b62 100755
--- a/exercises/nth-prime/nth_prime_test.rb
+++ b/exercises/nth-prime/nth_prime_test.rb
@@ -1,16 +1,19 @@
 #!/usr/bin/env ruby
-
 gem 'minitest', '>= 5.0.0'
 require 'minitest/autorun'
-
 require_relative 'nth_prime'
 
-class TestPrimes < Minitest::Test
-  def test_first
+# Test data version:
+# bb79e10
+# Rubocop directives
+# rubocop:disable Style/NumericLiterals
+#
+class NthPrimeTest < Minitest::Test
+  def test_first_prime
     assert_equal 2, Prime.nth(1)
   end
 
-  def test_second
+  def test_second_prime
     skip
     assert_equal 3, Prime.nth(2)
   end
@@ -22,13 +25,33 @@ def test_sixth_prime
 
   def test_big_prime
     skip
-    assert_equal 104_743, Prime.nth(10_001)
+    assert_equal 104743, Prime.nth(10001)
+  end
+
+  def test_there_is_no_zeroth_prime
+    skip
+    assert_raises(ArgumentError) { Prime.nth(0) }
   end
 
-  def test_weird_case
+  # 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 the top level BookKeeping
+  # module, which may be placed near the end of your file.
+  #
+  # In your file, it will look like this:
+  #
+  # module BookKeeping
+  #   VERSION = 1 # Where the version number matches the one in the test.
+  # end
+  #
+  # 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_raises ArgumentError do
-      Prime.nth(0)
-    end
+    assert_equal 1, BookKeeping::VERSION
   end
 end
diff --git a/lib/nth_prime_cases.rb b/lib/nth_prime_cases.rb
new file mode 100644
index 0000000000..bbaa736c30
--- /dev/null
+++ b/lib/nth_prime_cases.rb
@@ -0,0 +1,23 @@
+class NthPrimeCase < OpenStruct
+  def name
+    'test_%s' % description.downcase.gsub(/[ -]/, '_')
+  end
+
+  def actual
+    "Prime.nth(#{input})"
+  end
+
+  def raises_error?
+    expected == false
+  end
+
+  def skipped?
+    index > 0
+  end
+end
+
+NthPrimeCases = proc do |data|
+  JSON.parse(data)['cases'].map.with_index do |row, i|
+    NthPrimeCase.new(row.merge('index' => i))
+  end
+end