sprite importer will now error if it does not find the associated glob

lib/compass/errors.rb

@@ -7,4 +7,5 @@ module Compass
 
   class MissingDependency < Error
   end
+  class SpriteException < Error; end
 end

lib/compass/sass_extensions/sprites.rb

@@ -2,7 +2,6 @@ require 'digest/md5'
 require 'compass/sprite_importer'
 
 module Compass
-  class SpriteException < Exception; end
   module SassExtensions
     module Sprites
     end

lib/compass/sprite_importer.rb

@@ -79,6 +79,9 @@ module Compass
         next if files.empty?
         return files
       end
+
+      path = Compass.configuration.sprite_load_path.to_a.join(', ')
+      raise Compass::SpriteException, %Q{No files were found in the load path matching "#{uri}". Your current load paths are: #{path}}
     end
 
     # Returns an Array of image names without the file extension

test/units/sprites/sprite_command_test.rb

@@ -47,7 +47,7 @@ class SpriteCommandTest < Test::Unit::TestCase
   end
 
   it "should create sprite file" do
-    assert_equal 0, run_compass_with_options(['sprite', "-f", 'stylesheet.scss', "'#{@images_tmp_path}/*.png'"]).to_i
+    assert_equal 0, run_compass_with_options(['sprite', "-f", 'stylesheet.scss', "squares/*.png"]).to_i
     assert File.exists?(File.join(test_dir, 'stylesheet.scss'))
   end