Merge pull request #1127 from rylnd/refactor_tmp_directory

Refactor #tmp_directory into helper module

spec/components/directory_helper_spec.rb

@@ -0,0 +1,35 @@
+require 'spec_helper'
+require_dependency 'directory_helper'
+
+describe DirectoryHelper do
+  class DummyClass
+    include DirectoryHelper
+  end
+  let(:helper) { DummyClass.new }
+
+  before do
+    helper.tmp_directory('prefix')
+    helper.tmp_directory('other_prefix')
+  end
+
+  after do
+    helper.remove_tmp_directory('prefix')
+    helper.remove_tmp_directory('other_prefix')
+  end
+
+  describe '#tmp_directory' do
+    it 'is memoized by prefix' do
+      helper.tmp_directory('prefix').should eq(helper.tmp_directory('prefix'))
+      helper.tmp_directory('prefix').should_not eq(helper.tmp_directory('other_prefix'))
+    end
+  end
+
+  describe '#remove_tmp_directory' do
+    it 'removes the prefixed directory from the filesystem' do
+      tmp_directory = helper.tmp_directory('prefix')
+      helper.remove_tmp_directory('prefix')
+
+      Dir[tmp_directory].should_not be_present
+    end
+  end
+end