remove usage of vcr cassettes; delete unused fixtures; fix some broken unit tests

test/helpers/iqdb_test_helper.rb

@@ -0,0 +1,20 @@
+module IqdbTestHelper
+  def mock_iqdb_service!
+    mock_sqs_service = Class.new do
+      def initialize
+        @commands = []
+      end
+
+      def commands
+        @commands
+      end
+
+      def send_message(msg)
+        @commands << msg.split(/\n/).first
+      end
+    end
+
+    service = mock_sqs_service.new
+    Post.stubs(:iqdb_sqs_service).returns(service)
+  end
+end