Ensure dirname of manifest filename is always created

Author: josh

lib/sprockets/manifest.rb

@@ -222,8 +222,8 @@ def find_asset(logical_path)
 
       # Persist manfiest back to FS
       def save
-        ::FileUtils.mkdir_p dir
-        File.open(path, 'w') do |f|
+        ::FileUtils.mkdir_p File.dirname(filename)
+        File.open(filename, 'w') do |f|
           f.write json_encode(@data)
         end
       end

test/test_manifest.rb

@@ -102,6 +102,21 @@ def teardown
     assert_equal digest_path, data['assets']['application.js']
   end
 
+  test "compile to directory and seperate location" do
+    root  = File.join(Dir::tmpdir, 'public')
+    dir   = File.join(root, 'assets')
+    path  = File.join(root, 'manifests', 'manifest-123.json')
+
+    system "rm -rf #{root}"
+    assert !File.exist?(root)
+
+    manifest = Sprockets::Manifest.new(@env, dir, path)
+
+    manifest.compile('application.js')
+    assert File.directory?(manifest.directory)
+    assert File.file?(manifest.filename)
+  end
+
   test "compile asset with absolute path" do
     digest_path = @env['application.js'].digest_path