require 'spec_helper' describe Grape::Validations::RegexpValidator do module ValidationsSpec module RegexpValidatorSpec class API < Grape::API default_format :json params do requires :name, regexp: /^[a-z]+$/ end get do end end end end def app ValidationsSpec::RegexpValidatorSpec::API end context 'invalid input' do it 'refuses inapppopriate' do get '/', name: "invalid name" expect(last_response.status).to eq(400) end it 'refuses nil' do get '/', name: nil expect(last_response.status).to eq(400) end end it 'accepts valid input' do get '/', name: "bob" expect(last_response.status).to eq(200) end end