added support for searching of images in fogdocker

lib/fog/fogdocker/compute.rb

@@ -25,6 +25,7 @@ module Fog
       request :image_create
       request :image_delete
       request :image_get
+      request :image_search
 
       class Mock
         def initialize(options={})

lib/fog/fogdocker/models/compute/images.rb

@@ -14,6 +14,10 @@ module Fog
         def get(id)
           new service.image_get(id)
         end
+
+        def image_search(query = {})
+          service.image_search(query)
+        end
       end
     end
   end

lib/fog/fogdocker/requests/compute/image_search.rb

@@ -0,0 +1,29 @@
+module Fog
+  module Compute
+    class Fogdocker
+      class Real
+        def image_search(query = {})
+          Docker::Util.parse_json(Docker.connection.get('/images/search', query)).map do |image|
+            downcase_hash_keys(image)
+          end
+        end
+      end
+      class Mock
+        def image_search(query = {})
+          [
+              {"description" => "",
+               "is_official" => false,
+               "is_automated" => false,
+               "name" => "wma55/u1210sshd",
+               "star_count" => 0},
+              {"description" => "",
+               "is_official" => false,
+               "is_automated" => false,
+               "name" => "jdswinbank/sshd",
+               "star_count" => 0}
+          ]
+        end
+      end
+    end
+  end
+end

tests/fogdocker/compute_tests.rb

@@ -10,7 +10,7 @@ Shindo.tests('Fog::Compute[:fogdocker]', ['fogdocker']) do
 
   tests("Compute requests") do
     %w{ api_version container_all container_create container_delete container_get
-        container_action image_all image_create image_delete image_get }.each do |collection|
+        container_action image_all image_create image_delete image_get image_search }.each do |collection|
       test("it should respond to #{collection}") { compute.respond_to? collection }
     end
   end

tests/fogdocker/requests/compute/image_search_tests.rb

@@ -0,0 +1,11 @@
+Shindo.tests("Fog::Compute[:fogdocker] | image_search request", 'fogdocker') do
+
+  compute = Fog::Compute[:fogdocker]
+
+  tests("Search images") do
+    response = compute.image_search('term' => 'test')
+    test("should be a kind of Array") { response.kind_of?  Array}
+    test("Array elements should be a kind of Hash") { response.first.kind_of?  Hash}
+    test("response elemetns should have a name") { !response.first['name'].nil? && !response.first['name'].empty? }
+  end
+end