Masa Sakano masasakano

Goals

Languages are :en and :ja and :fr, where :en is the default.
It is path-based, like /ja/articles is for Index of Article model.
Allow access without the locale parameter in the path like http://example.com/articles
- in which case the locale parameter I18n.locale should be set according to the browser's request, falling back to :en

It is a major version up, in particular:

Rails 6 almost dropped Sprockets in favour of Webpack
Rails 7 almost dropped Webpack in favour of jsbundling-rails + import maps (or esbuild) + Sprockets.

The backgrond is

	module ModuleWasFounds
	class InconsistencyInWasFoundError < StandardError # ModuleWasFounds::InconsistencyInWasFoundError
	## Error in inconsistency in ModuleWasFound#was_found? and ModuleWasFound#was_created?
	end
	end

	# Returns the String for the caller information
	#
	# @example To display the location of the last caller in the *_test.rb file.
	# assert abc, sprintf("(%s): abc=%s", _get_caller_info_message, abc.inspect) # defined in test_helper.rb
	#
	# @example displays the exact line where an error occurs
	# assert false, _get_caller_info_message(bind_offset: -1, prefix: true)+" Error occurs exactly at this line."
	#
	# @param bind_offset: [Integer, NilClass] offset for caller_locations (used for displaying the caller routine). In default (=nil), the last location in *_test.rb (such as, inside a block). If this is 0, it is useful in the case where this method is called in a test library method that is called from an original test routine. Therefore, specify "-1" to get the information of the caller itself (Second example above).
	# @param fmt: [String] sprintf format. It must contain %s (for path) and %d (or %s) (for line number) in this order.

	# -- coding: utf-8 --

	require 'w3c_validators'

	# Module to deal with W3C Validator
	#
	# == Usage
	#
	# Put this file in one of your library-load paths in the test environment.
	# Then, in /test/test_helper.rb

	# coding: utf-8
	ENV['RAILS_ENV'] \|\|= 'test'
	require_relative '../config/environment'
	require 'rails/test_help'
	require 'w3c_validators' # Key module. Write in Gemfile: gem 'w3c_validators'

	# meant to be included in /test/test_helper.rb
	class ActiveSupport::TestCase

	# Botch fix of W3C validation errors for HTMLs generated by button_to

	require "tempfile"

	# TeeIO to "tee" (or splice) an IO
	#
	# Basically this overwrites IO#write .
	#
	# Note this does not capture IO#syswrite
	#
	# The main part but {TeeIO.suppress_io} is taken from
	# {https://stackoverflow.com/a/9439298/3577922}

	gem "minitest"
	require 'minitest/autorun'
	require 'tempfile'

	# In general, each test method should generate its own temporary files.
	# With the following code, the temporary files will be automatically deleted
	# at the end of the processing, even if their IOs have been alraedy closed
	# and only the filename (path) were utilised during processing.

	class TestUnitMyLibrary < MiniTest::Test

	require 'optparse'
	require 'optparse/time' # if Time is used.
	#require 'ostruct'
	require 'pp'

	# This example file for using Ruby optparse is based on the original example
	# code in Github, specifically, commit number f2b8318, or roughly for Ruby 3.1.2.
	# https://github.com/ruby/optparse
	# I have added several sections and modified some parts, as well as annotated
	# the code extensively with my comments.

	<head>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
	</head>
	<body>

	<a href="https://jsfiddle.net/masa_alpin/z1sjekvt/35/">jsfiddle</a>
	<!-- country-town working with town hidden mostly4 -->
	<!-- country-town dynamic dropdown menu. Town menu hidden first. It'll appear, but including optgroup country name, with tidied-up code. -->

	<form action="/persons" accept-charset="UTF-8" method="post">