Alex Popov AlexVPopov

Last active February 21, 2020 07:08

A cheat sheet for clojure.spec

clojure.spec cheat sheet

(ns my.ns (:require [clojure.spec.alpha :as s]))

Created March 6, 2018 19:49

I hereby claim:

To claim this, I am signing this object:

Created December 21, 2017 15:31

spec_errors

	Failures:

	1) Ruby2D::Image#contains? returns true if point is inside image
	Failure/Error: ext_init(@path)

	NoMethodError:
	undefined method `ext_init' for #<Ruby2D::Image:0x007fbbaaa08c60>
	# ./lib/ruby2d/image.rb:27:in `initialize'
	# ./test/image_spec.rb:13:in `new'
	# ./test/image_spec.rb:13:in `block (3 levels) in <top (required)>'

Created September 4, 2017 07:52

	RSpec.describe Person do
	let(:person) { described_class.new('Fixed', 'Name', education_level, educator) }

	describe '#educate' do
	let(:education_level) { 2 }
	let(:educator) { instance_double('PersonEducator') }
	let(:updated_education_level) { education_level + 1 }

	subject { person.education_level }

Last active December 20, 2016 15:16

	def read_price(selector)
	elmenent = $driver.find_element(id: selector)
	rescue Selenium::WebDriver::Error::NoSuchElementError
	"Euer Return-wert"
	else
	return elmenent.attribute("value").to_s if elmenent == "NUM_HR_VSU"

	elmenent.text().gsub(' €', '').gsub(',', '.')
	end

Created September 8, 2016 12:42

	# User.joins(accounts: :broker_server)
	SELECT "users".*
	FROM "users"
	INNER JOIN "broker_accounts"
	ON "broker_accounts"."user_id" = "users"."id"
	AND "broker_accounts"."state" IN ('new', 'active', 'inactive', 'disabled', 'out-of-money')
	INNER JOIN "broker_servers"
	ON "broker_servers"."id" = "broker_accounts"."broker_server_id"
	WHERE "users"."active" = 't'

Last active August 29, 2015 14:24

How to define fabricators of models with polymorphic associations

Let's say you have the following models:

class Admin < ActiveRecord::Base has_one :login, as: :loginable end class User < ActiveRecord::Base has_one :login, as: :loginable end

Last active August 29, 2015 14:18 — forked from IanVaughan/uninstall_gems.sh

Created December 11, 2013 13:11

Ruby cheatsheet

	__foo__ = "This foo sentence contains many foo instances, for example: foo, foo, foo."

	* Match a single symbol: `foo.match /./ # => #<MatchData "T">`
	* Match the first-found word character symbol: `foo.match /\w/ => #<MatchData "T">`
	* Extract all symbols of a string: `foo.scan /./ # => ["T",
	"h",
	"i",
	"s",
	" ",
	"f",

Created December 5, 2013 15:31

Tests for challenge 11 of the FMI ruby course

	require 'spec_helper'

	ivan = Student.new 'Иван', 10, :second
	mariya = Student.new 'Мария', 12, :first
	neycho = Student.new 'Нейчо', 9, :third

	students = [ivan, mariya, neycho]

	describe "Array#to_proc" do
	it "works for a single element" do