forgot test files

test/fixtures/stylesheets/error/config.rb

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+# Require any additional compass plugins here.
+css_dir = "tmp"
+sass_dir = "sass"
+images_dir = "assets/images"
+javascripts_dir = "assets/javascripts"
+# Set this to the root of your project when deployed:
+http_path = "/"
+# To enable relative paths to assets via compass helper functions. Uncomment:
+output_style = :compact
+relative_assets = true

test/fixtures/stylesheets/error/sass/screen.sass

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+test
+  background: image_url("testing.png)