minitest validates presence true

street_test.rb

require "minitest_helper"

describe Street do
  it "must have a code" do
    # No code
    street = Street.new
    # Invalid
    street.valid?.must_equal false
    # Code assignation (random 1000/10000)
    street.code = rand(9000) + 1000
    # Valid
    street.valid?.must_equal true
  end
end