Add VCR to and improve all integration tests

.bundle/config

@@ -1,3 +1,4 @@
 ---
-BUNDLE_JOBS: '4'
-BUNDLE_BIN: bin
+BUNDLE_JOBS: "3"
+BUNDLE_BIN: "bin"
+BUNDLE_RETRY: "3"

Gemfile

@@ -12,4 +12,5 @@ end
 
 group :test do
   gem 'webmock', require: false
+  gem 'vcr', require: false
 end

lib/auth0/api/v2/resource_servers.rb

@@ -32,7 +32,7 @@ def resource_server(resource_server_id)
         # @return [json] Returns the resource server.
         def create_resource_server(identifier, options = {})
           raise Auth0::InvalidParameter, 'Must supply a valid resource server id' if identifier.to_s.empty?
-          if ['<', '>'].include?(options.fetch(:name, ''))
+          if options.fetch(:name, '').index(/[<>]/)
             raise Auth0::InvalidParameter, 'Name must contain at least one character. Does not allow "<" or ">"'
           end
           request_params = Hash[options.map { |(k, v)| [k.to_sym, v] }]

lib/auth0/api/v2/users.rb

@@ -101,7 +101,7 @@ def delete_user(user_id)
         # @return [json] Returns the updated user.
         def patch_user(user_id, body)
           raise Auth0::MissingUserId, 'Must supply a valid user_id' if user_id.to_s.empty?
-          raise Auth0::InvalidParameter, 'Must supply a valid body' if body.to_s.empty?
+          raise Auth0::InvalidParameter, 'Must supply a valid body' if body.to_s.empty? || body.empty?
           path = "#{users_path}/#{user_id}"
           patch(path, body)
         end