rails params

params_test.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  # Activate the gem you are reporting the issue against.
  gem "rails", "6.1.0"
end

require "rack/test"
require "action_controller/railtie"

class TestApp < Rails::Application
  config.root = __dir__
  config.hosts << "example.org"
  config.session_store :cookie_store, key: "cookie_store_key"
  secrets.secret_key_base = "secret_key_base"

  config.logger = Logger.new($stdout)
  Rails.logger  = config.logger

  routes.draw do
    post "/" => "test#create"
  end
end

class TestController < ActionController::Base
  include Rails.application.routes.url_helpers

  def create
    render json: params
  end
end

require "minitest/autorun"

class BugTest < Minitest::Test
  include Rack::Test::Methods

  def test_returns_success
    data = [
      {
        "b" => 20,
        "c" => 30
      },
      {
        "a" => 10
      }
    ]
    post "/", params: {
      data: data
    }
    assert last_response.ok?

    result = JSON.parse(last_response.body).dig("params", "data")
    assert_equal data, result
  end

  private
  def app
    Rails.application
  end
end
__END__

# Running:

I, [2021-03-15T08:00:07.920027 #1]  INFO -- : Started POST "/" for 127.0.0.1 at 2021-03-15 08:00:07 +0000
F

Failure:
BugTest#test_returns_success [tmp/params_test.rb:60]:
--- expected
+++ actual
@@ -1 +1 @@
-[{"b"=>20, "c"=>30}, {"a"=>10}]
+[{"b"=>"20", "c"=>"30", "a"=>"10"}]



rails test tmp/params_test.rb:44



Finished in 0.332642s, 3.0062 runs/s, 6.0125 assertions/s.
1 runs, 2 assertions, 1 failures, 0 errors, 0 skips