Make pedantic test actually pedantic

What do you call someone that thinks they are pedantic but actually
aren’t? All the crazy custom parsing in this test was making so it
wasn’t actually doing anything.

test/test_pedantic.rb

@@ -1,57 +1,30 @@
 require 'test/unit'
+require 'yaml'
 
 class TestPedantic < Test::Unit::TestCase
-  Lib = File.expand_path("../../lib/linguist", __FILE__)
+  filename = File.expand_path("../../lib/linguist/languages.yml", __FILE__)
-
+  LANGUAGES = YAML.load(File.read(filename))
-  def file(name)
-    File.read(File.join(Lib, name))
-  end
 
   def test_language_names_are_sorted
-    languages = []
+    assert_sorted LANGUAGES.keys
-    file("languages.yml").lines.each do |line|
-      if line =~ /^(\w+):$/
-        languages << $1
-      end
-    end
-    assert_sorted languages
   end
 
   def test_extensions_are_sorted
-    extensions = nil
+    LANGUAGES.each do |name, language|
-    file("languages.yml").lines.each do |line|
+      extensions = language['extensions']
-      if line =~ /^  extensions:$/
+      assert_sorted extensions[1..-1] if extensions && extensions.size > 1
-        extensions = []
-      elsif extensions && line =~ /^  - \.([\w\-\.]+)( *#.*)?$/
-        extensions << $1
-      else
-        assert_sorted extensions[1..-1] if extensions
-        extensions = nil
-      end
     end
   end
 
   def test_filenames_are_sorted
-    filenames = nil
+    LANGUAGES.each do |name, language|
-    file("languages.yml").lines.each do |line|
+      assert_sorted language['filenames'] if language['filenames']
-      if line =~ /^  filenames:$/
-        filenames = []
-      elsif filenames && line =~ /^  - \.(\w+)$/
-        filenames << $1
-      else
-        assert_sorted filenames if filenames
-        filenames = nil
-      end
     end
   end
 
   def assert_sorted(list)
-    previous = nil
+    list.each_cons(2) do |previous, item|
-    list.each do |item|
+      flunk "#{previous} should come after #{item}" if previous > item
-      if previous && previous > item
-        flunk "#{previous} should come after #{item}"
-      end
-      previous = item
     end
   end
 end