[digitalocean|compute] added test helpers

tests/digitalocean/helper.rb

@@ -0,0 +1,32 @@
+
+# Shortcut for Fog::Compute[:digitalocean]
+def service
+  Fog::Compute[:digitalocean]
+end
+
+# Create a long lived server for the tests
+def fog_test_server
+  server = service.servers.find { |s| s.name == 'fog-test-server' }
+  unless server
+    image = service.images.find { |i| i.name == 'Ubuntu 12.04 x64 Server' }
+    region = service.regions.find { |r| r.name == 'New York 1' }
+    flavor = service.flavors.find { |r| r.name == '512MB' }
+    server = service.servers.create :name      => 'fog-test-server',
+                                    :image_id  => image.id,
+                                    :region_id => region.id,
+                                    :flavor_id => flavor.id
+    # Wait for the server to come up
+    begin
+      server.wait_for(120) { server.reload rescue nil; server.ready? }
+    rescue Fog::Errors::TimeoutError
+      # Server bootstrap took more than 120 secs!
+    end
+  end
+  server
+end
+
+# Destroy the long lived server
+def fog_test_server_destroy
+  server = service.servers.find { |s| s.name == 'fog-test-server' }
+  server.destroy if server
+end