Rakefile in geometry-3 vs Rakefile in geometry-4

@@ -1,7 +1,14 @@
 require "bundler/gem_tasks"
+require 'rake/testtask'
 
+Rake::TestTask.new do |t|
+    t.libs.push "lib"
+    t.test_files = FileList['test/**/*.rb']
+    t.verbose = true
+end
+
 task :fixdates do
     branch = `git branch --no-color -r --merged`.strip
     `git fix-dates #{branch}..HEAD`
 end
 
@@ -10,9 +17,13 @@
     `git fix-dates -f #{branch}..HEAD`
 end
 
 task :trim_whitespace do
   system(%Q[git status --short | awk '{if ($1 != "D" && $1 != "R") print $2}' | grep -e '.*\.rb$' | xargs sed -i '' -e 's/[ \t]*$//g;'])
+end
+
+task :docs do
+    `yard`
 end
 
 task :uninstall do
     `gem uninstall geometry`
 end