added unit tests for documents

test/shoulda_macros/attachment_fu_macros.rb

@@ -0,0 +1,28 @@
+class Test::Unit::TestCase
+  class << self
+    def should_validate_as_attachment
+      klass = self.name.gsub(/Test$/, '').constantize
+
+      context "validate as attachment" do
+        should_validate_presence_of :size, :content_type, :filename
+
+        should "validate with :attachment_attributes_valid?" do
+          callback_chain = klass.validate_callback_chain
+          assert callback_chain.map(&:method).include?(:attachment_attributes_valid?)
+        end
+      end
+    end
+
+    def should_have_attachment(options = {})
+      klass = self.name.gsub(/Test$/, '').constantize
+
+      context "should have attachment options" do
+        options.each do |key, val|
+          should "have the correct options for key #{key}" do
+            assert val, klass.attachment_options[key]
+          end
+        end
+      end
+    end
+  end
+end

test/unit/document_test.rb

@@ -1,8 +1,48 @@
 require 'test_helper'
 
 class DocumentTest < ActiveSupport::TestCase
-  # Replace this with your real tests.
-  def test_truth
-    assert true
+  should_belong_to :component, :article
+
+  should_validate_presence_of :name
+  should_validate_as_attachment
+
+  should_have_attachment  :max_size => 20.megabytes,
+                          :content_type => [
+                            'application/pdf', 
+                            'application/msword', 
+                            'application/msexcel', 
+                            'application/vnd.ms-excel',
+                            'application/vnd.ms-powerpoint',
+                            'application/octet-stream',
+                            'text/rtf',
+                            'text/plain',
+                            'video/mpeg',
+                            'video/quicktime',
+                            'video/x-msvideo',
+                            'audio/x-wav',
+                            'audio/mpeg'
+                          ],
+                          :storage => :file_system
+
+  context "ORDER_OPTIONS" do
+    should "include Created Descending" do
+      assert Document::ORDER_OPTIONS.include?(['Created Descending', 'created_at DESC'])
+    end
+
+    should "include Created Ascending" do
+      assert Document::ORDER_OPTIONS.include?(['Created Ascending', 'created_at ASC'])
+    end
+
+    should "include Name Descending" do
+      assert Document::ORDER_OPTIONS.include?(['Name Descending', 'name DESC'])
+    end
+
+    should "include Name Ascending" do
+      assert Document::ORDER_OPTIONS.include?(['Name Ascending', 'name ASC'])
+    end
+
+    should "have four options" do
+      assert_equal 4, Document::ORDER_OPTIONS.size
+    end
   end
 end