Stephen Margheim fractaledmind

Descriptive messages with basic asserts

What if I told you that it's possible to get helpful failure messages from basic asserts using idiomatic equality == checks? No DSLs in sight.

This is a proof of concept to demonstrate that it's possible... mostly to satisfy my own curiosity. The concepts here could theoretically be expanded to provide a useful extension to existing testing frameworks or perhaps lay a foundation for an entirely new one.

This experiment created with Ruby 3.0.1. Note to self: There's probably a way to do this with TracePoint instead of monkey patching but I couldn't figure out how to get a reference to the passed variable being compared.

	require 'active_record/connection_adapters/sqlite3_adapter'

	#
	# Monkey-patch for disable foreign keys during `alter_table` for sqlite3 adapter for Rails 5
	#

	module ActiveRecord
	module ConnectionAdapters
	class SQLite3Adapter < AbstractAdapter

	# N.B. The only tool missing here that is mentioned in the document is `zenmap`
	# purely because this image is intended to be run via a CLI and `zenmap` is a GUI
	# to `nmap` i.e. one can play around with the tools by running:
	#
	# $ docker build --name bite_size_networking:latest .
	# $ docker run --rm -d --name bsn_test bite_size_networking:latest
	# $ docker exec -it bsn_test bash
	#
	# Alternatively, one can change the `ENTRYPOINT` to `["bash"]` and run:
	#

	<%= form_with(model: billboard) do \|form\| %>
	<%= tag.div class: "dropzone", data: { controller: "dropzone", dropzone_param_name_value: "billboard[images][]", dropzone_url_value: rails_direct_uploads_url, dropzone_accepted_files_value: "image/*", dropzone_max_files_value: 3, dropzone_max_filesize_value: 0.300 } do %>
	<div class="dz-default dz-message flex flex-col items-center">
	<%= image_tag "upload.svg", size: 28, class: "colorize-black", aria: { hidden: true } %>
	<h5 class="font-semibold mbs-4">Drop files here or click to upload.</h5>
	<p class="text-sm text-subtle">Upload up to 10 files.</p>
	</div>
	<% end %>

	<div class="inline-flex items-center mbs-2 mie-1">

	require 'date'

	class Sorter
	def initialize(*instructions)
	@defaults = {
	direction: :ascending,
	nils: :small,
	accessor: :itself,
	case_sensitive: true,
	normalized: false,

	name: CI

	on: [push]

	jobs:
	test:
	runs-on: ubuntu-latest

	services:
	postgres:

	function switch_pg {
	local version_to_run=$1
	local currently_running_version=$(psql --no-psqlrc -t -c 'show server_version;' postgres \| xargs)

	# check if you're erroneously switching to the same version
	if [ "$version_to_run" = "$currently_running_version" ]; then
	echo "Postgres $version_to_run is already running."
	return 1
	fi

	import { Controller } from "stimulus"
	import SlimSelect from "slim-select"
	import "slim-select/dist/slimselect.min.css"
	import "../style/slimselect-customized.css"

	export default class extends Controller {
	connect() {
	const limit = this.data.get("limit")
	const placeholder = this.data.get("placeholder")
	const searchText = this.data.get("no-results")

	class ApplicationController < ActionController::Base
	include CableReady::Broadcaster
	include Toastable
	end

	FROM ruby:3.0-alpine

	RUN apk add --no-cache --update \
	ack \
	bash \
	build-base \
	curl \
	git \
	htop \
	less \

Stephen Margheim fractaledmind

Descriptive messages with basic asserts

Examples: