more sprockets css tests. expire sprockets index on every request in dev mode. fixes #215

features/sass_partials.feature

@@ -1,34 +1,83 @@
-Feature: Sass Partials
+Feature: Sass Updates and Partials
+  Scenario: The preview server should update stylesheets when Sass changes
+    Given the Server is running at "preview-app"
+    And the file "source/stylesheets/plain.css.sass" has the contents
+      """
+      red
+        color: red
+      """
+    When I go to "/stylesheets/plain.css"
+    Then I should see "color: red;"
+    And the file "source/stylesheets/plain.css.sass" has the contents
+      """
+      red
+        color: blue
+      """
+    When I go to "/stylesheets/plain.css"
+    Then I should see "color: blue;"
+
   Scenario: The preview server should update stylesheets when Sass partials change
     Given the Server is running at "preview-app"
+    And the file "source/stylesheets/main.css.sass" has the contents
+      """
+      @import partial.sass
+
+      red
+        color: red
+      """
     And the file "source/stylesheets/_partial.sass" has the contents
       """
       body
         font-size: 14px
       """
     When I go to "/stylesheets/main.css"
-    Then I should see "font-size: 14px"
+    Then I should see "color: red;"
+    And I should see "font-size: 14px;"
+    And the file "source/stylesheets/main.css.sass" has the contents
+      """
+      @import partial.sass
+
+      red
+        color: blue
+      """
     And the file "source/stylesheets/_partial.sass" has the contents
       """
       body
         font-size: 18px
       """
     When I go to "/stylesheets/main.css"
-    Then I should see "font-size: 18px"
+    Then I should see "color: blue;"
+    And I should see "font-size: 18px"
     
   Scenario: The preview server should update stylesheets when Sprockets partials change
     Given the Server is running at "preview-app"
+    And the file "source/stylesheets/main2.css.sass" has the contents
+      """
+      //= require "_partial2.css.sass"
+
+      red
+        color: red
+      """
     And the file "source/stylesheets/_partial2.css.sass" has the contents
       """
       body
         font-size: 14px
       """
     When I go to "/stylesheets/main2.css"
+    Then I should see "color: red;"
     Then I should see "font-size: 14px"
+    And the file "source/stylesheets/main2.css.sass" has the contents
+      """
+      //= require "_partial2.css.sass"
+
+      red
+        color: blue
+      """
     And the file "source/stylesheets/_partial2.css.sass" has the contents
       """
       body
         font-size: 18px
       """
     When I go to "/stylesheets/main2.css"
+      Then I should see "color: blue;"
     Then I should see "font-size: 18px"

fixtures/preview-app/source/stylesheets/main.css.sass

@@ -1 +1,4 @@
 @import partial.sass
+
+red
+  color: blue

fixtures/preview-app/source/stylesheets/main2.css.sass

@@ -1 +1,4 @@
 //= require "_partial2.css.sass"
+
+red
+  color: blue

fixtures/preview-app/source/stylesheets/plain.css.sass

@@ -0,0 +1,2 @@
+red
+  color: blue

lib/middleman/core_extensions/sprockets.rb

@@ -68,6 +68,7 @@ module Middleman::CoreExtensions::Sprockets
 
   class MiddlemanEnvironment < ::Sprockets::Environment
     def initialize(app)
+      @app = app
       super app.source_dir
       
       # Make the app context available to Sprockets
@@ -82,6 +83,11 @@ module Middleman::CoreExtensions::Sprockets
         end
       end
     end
+    
+    def find_asset(path, options = {})
+      expire_index! if @app.development?
+      super
+    end
   end
     
   class JavascriptEnvironment < MiddlemanEnvironment