require 'pincode_validator' describe PincodeValidator do it 'should validate pincodes' do ['244713', '560029', '560030', '110011'].each do |pin| expect(described_class::valid? pin).to eq(true) end end it 'should validate incorrect pincodes' do ['999999', '99999', '9999', '999', '99', '9', '111111', '2447131'].each do |pin| expect(described_class::valid? pin).to eq(false), "#{pin} should be invalid" end end end