Fixes error messaging when credentials missing

closes #287

bin/fog

@@ -4,8 +4,8 @@ require 'irb'
 require 'yaml'
 Fog.credential = ARGV.first ? ARGV.first.to_sym : nil
 Fog.mock! if ENV['FOG_MOCK']
-unless Fog.credentials
-  exit
+if Fog.credentials.empty?
+  Fog::Errors.missing_credentials
 end
 
 require 'fog/bin'

lib/fog/core/credentials.rb

@@ -36,7 +36,7 @@ module Fog
     @credentials  ||= begin
       if credentials_path && File.exists?(credentials_path)
         credentials = self.symbolize_credentials(YAML.load_file(credentials_path))
-        (credentials && credentials[credential]) or raise LoadError.new(missing_credentials)
+        (credentials && credentials[credential]) || Fog::Errors.missing_credentials
       else
         {}
       end
@@ -53,57 +53,4 @@ module Fog
     end
   end
 
-private
-
-  # @return [String] The error message that will be raised, if credentials cannot be found
-  def self.missing_credentials
-    <<-YML
-Missing Credentials
-
-To run as '#{credential}', add the following to your resource config file: #{credentials_path}
-An alternate file may be used by placing its path in the FOG_RC environment variable
-
-#######################################################
-# Fog Credentials File
-#
-# Key-value pairs should look like:
-# :aws_access_key_id:                 022QF06E7MXBSAMPLE
-:#{credential}:
-  :aws_access_key_id:
-  :aws_secret_access_key:
-  :bluebox_api_key:
-  :bluebox_customer_id:
-  :brightbox_client_id:
-  :brightbox_secret:
-  :go_grid_api_key:
-  :go_grid_shared_secret:
-  :google_storage_access_key_id:
-  :google_storage_secret_access_key:
-  :linode_api_key:
-  :local_root:
-  :new_servers_password:
-  :new_servers_username:
-  :public_key_path:
-  :private_key_path:
-  :rackspace_api_key:
-  :rackspace_username:
-  :rackspace_servicenet:
-  :rackspace_cdn_ssl:
-  :slicehost_password:
-  :stormondemand_username:
-  :stormondemand_password:
-  :terremark_username:
-  :terremark_password:
-  :voxel_api_key:
-  :voxel_api_secret:
-  :zerigo_email:
-  :zerigo_token:
-  :dnsimple_email:
-  :dnsimple_password:
-#
-# End of Fog Credentials File
-#######################################################
-
-YML
-  end
 end

lib/fog/core/errors.rb

@@ -16,5 +16,58 @@ module Fog
 
     class NotFound < Fog::Errors::Error; end
 
+    # @return [String] The error message that will be raised, if credentials cannot be found
+    def self.missing_credentials
+      missing_credentials_message = <<-YML
+Missing Credentials
+
+To run as '#{Fog.credential}', add the following to your resource config file: #{Fog.credentials_path}
+An alternate file may be used by placing its path in the FOG_RC environment variable
+
+#######################################################
+# Fog Credentials File
+#
+# Key-value pairs should look like:
+# :aws_access_key_id:                 022QF06E7MXBSAMPLE
+:#{Fog.credential}:
+  :aws_access_key_id:
+  :aws_secret_access_key:
+  :bluebox_api_key:
+  :bluebox_customer_id:
+  :brightbox_client_id:
+  :brightbox_secret:
+  :go_grid_api_key:
+  :go_grid_shared_secret:
+  :google_storage_access_key_id:
+  :google_storage_secret_access_key:
+  :linode_api_key:
+  :local_root:
+  :new_servers_password:
+  :new_servers_username:
+  :public_key_path:
+  :private_key_path:
+  :rackspace_api_key:
+  :rackspace_username:
+  :rackspace_servicenet:
+  :rackspace_cdn_ssl:
+  :slicehost_password:
+  :stormondemand_username:
+  :stormondemand_password:
+  :terremark_username:
+  :terremark_password:
+  :voxel_api_key:
+  :voxel_api_secret:
+  :zerigo_email:
+  :zerigo_token:
+  :dnsimple_email:
+  :dnsimple_password:
+#
+# End of Fog Credentials File
+#######################################################
+
+    YML
+    raise(LoadError.new(missing_credentials_message))
+  end
+
   end
 end