Rails NilClass#to_query(key) test

nil_to_query_test.rb

begin
  require "bundler/inline"
rescue LoadError => e
  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

gemfile(true) do
  source "https://rubygems.org"
  gem "rails", github: "rails/rails"
end

require "active_support"
require "active_support/core_ext/object/blank"
require "minitest/autorun"

class BugTest < Minitest::Test
  def test_nil_to_query
    assert_equal "key", nil.to_query('key')
  end

  def test_nil_to_query_hash_value
    assert_equal "key", { key: nil }.to_query
  end

  def test_nil_hash_value_round_trip
    hash = { 'key' => nil }
    assert_equal hash, Rack::Utils.parse_nested_query(hash.to_query)
  end
end