[Brightbox] Tests recognised options

Never actually tested the options we declared when creating a new
instance of the Compute service.

tests/brightbox/compute_tests.rb

@@ -1,9 +1,35 @@
-Shindo.tests('Fog::Compute::Brightbox::Real', ['brightbox']) do
+Shindo.tests('Fog::Compute[:brightbox]', ['brightbox']) do
 
-  @bb = Fog::Compute::Brightbox::Real.new({})
+  @test_service = Fog::Compute[:brightbox]
 
   tests("#respond_to? :default_image").returns(true) do
-    @bb.respond_to?(:default_image)
+    @test_service.respond_to?(:default_image)
   end
 
-end
+end
+
+Shindo.tests('Fog::Compute.new', ['brightbox']) do
+
+  tests("service options") do
+    {
+      :brightbox_api_url => "https://example.com",
+      :brightbox_auth_url => "https://example.com",
+      :brightbox_client_id => "app-12345",
+      :brightbox_secret => "12345abdef6789",
+      :brightbox_username => "user-12345",
+      :brightbox_password => "password1234",
+      :brightbox_account => "acc-12345"
+    }.each_pair do |option, sample|
+      tests("recognises :#{option}").returns(true) do
+        options = {:provider => "Brightbox"}
+        options[option] = sample
+        begin
+          Fog::Compute.new(options)
+          true
+        rescue ArgumentError
+          false
+        end
+      end
+    end
+  end
+end