JUTE Workshop
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This document discusses unit testing and the JUTE testing framework. It recommends writing small, simple tests and testing code early and often. It provides instructions on installing JUTE and writing tests, as well as running tests in the browser, with JUTE, and using different JUTE engines like Selenium. The goal is to write many tests to achieve 75% code coverage.
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Mal ganz ehrlich: Testen im Frontend hat noch nie viel Spaß gemacht. In meinem Talk möchte ich mit Jest eine Testbibliothek vorstellen, die genau das ändern kann. Jest lässt sich ohne viel Konfiguration direkt einsetzen und bringt alles mit, was man von einer Testbibliothek erwartet (und noch mehr).
An vielen praktischen Beispielen möchte ich meine Lieblingsfeatures wie Snapshot-Tests, Mocking oder das tolle CLI erläutern und zeigen, dass Testen im Frontend durchaus Spaß machen kann. Eine Ausrede weniger, um auf das Testen im Frontend zu verzichten!
Vorkenntnisse:
Grundlegende JavaScript-Kenntnisse.
Lernziele:
Die Teilnehmer sollen einen Überblick über die Funktionsweise und die Einsatzbereiche von Jest bekommen. Sie lernen, wie sie für Tests in Frontend-Projekten mit Jest im Werkzeugkoffer gut gerüstet sind.
The Many Ways to Test Your React App
Van Wilson
Senior Consultant with Cardinal Solutions
Find more by Van Wilson: https://speakerdeck.com/vjwilson
All Things Open
October 26-27, 2016
Raleigh, North Carolina
Puppet Development Workflow
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Das Frontend richtig Testen – mit Jest @Developer Week 2018
Mal ganz ehrlich: Testen im Frontend hat noch nie viel Spaß gemacht. In meinem Talk möchte ich mit Jest eine Testbibliothek vorstellen, die genau das ändern kann. Jest ist ohne viel Konfiguration direkt einsetzbar und bringt alles mit, was man von einer Testbibliothek erwartet (und noch mehr). An vielen praktischen Beispielen möchte ich meine Lieblingsfeatures wie z.B. Snapshot-Tests, Mocking oder das tolle CLI erläutern und zeigen, dass Testen im Frontend durchaus Spaß machen kann. Eine Ausrede weniger, um auf das Testen im Frontend zu verzichten! Die Zuhörer sollen einen Überblick über die Funktionsweise und die Einsatzbereiche von Jest bekommen. Sie lernen, wie sie mit Jest im Werkzeugkoffer für die Tests ihres Frontend-Projekts gut gerüstet sind.
Skillwise Unit Testing
Unit testing involves testing parts of an application in isolation to validate their logic and public APIs. It is good for testing complex low-level code and catching defects early. Good unit tests are isolated, independent, test a single behavior, help document the system, and execute quickly. Frameworks like NUnit help designate and run tests. Mocking frameworks like Moq allow creating fake collaborators to test classes in isolation without dependencies.
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Making the most of your Test Suite
1. The document discusses defining tests, running tests on every commit using continuous integration (CI) tools like Hudson, and monitoring code quality and deployment with tools like coverage.py, Pony Build, and Django Kong.
2. It emphasizes documenting how to run tests, setting up CI to run tests on each commit, and using tools like coverage reports and test data to measure and improve code quality over time.
3. Key recommendations include setting up a CI server, writing tests that run on commit, and using tools to capture test data and monitor code quality and site functionality over time.
An Introduction to Test Driven Development
This document provides an overview of test-driven development (TDD). It defines TDD as a technique for building software where tests are written before code to guide development. The key aspects of TDD covered are:
- Writing tests first before code, which helps improve design and ensures tests are written.
- The TDD mantra of Red-Green-Refactor, where tests initially fail (Red), code is written to pass tests (Green), then code is refactored to improve design.
- An example case study of a large Java project developed using TDD that has over 20,000 lines of unit tests providing over 90% test coverage.
Comment j'ai mis ma suite de tests au régime en 5 minutes par jour
This document discusses ways to make test suites run faster. It suggests distributing tests across multiple servers in parallel to take advantage of multiple cores. Other suggestions include deleting redundant or dead code to remove unnecessary tests, using in-memory databases and other tools to avoid network latency, and mocking slow layers to isolate tests. Complexity in tests should be reduced where possible by breaking long tests into smaller focused tests. The overall message is that simplifying code under test can make the test suite itself run significantly faster.
Testing 101
This document provides an introduction to automated testing. It discusses the motivations for automated testing such as improving quality and catching bugs early. It covers basic testing concepts like unit, integration, and system tests. It explains testing principles such as keeping tests independent and focusing on visible behavior. The document also discusses popular testing frameworks for different programming languages and provides examples of tests from a codebase.
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JUTE Workshop
- 1. Unit Test/JUTE Workshop Mark Ethan Trostler trostler@yahoo- inc.com @zzoass
- 2. Minimize Your Pain •Write Small •Write Simple •Test Early •Test Often
- 3. Write Small – Write Simple •Isolate code to test •Loosely couple dependencies •Be obvious •Optimize last
- 4. Test Early – Test Often Test Now
- 5. Install JUTE •NodeJS (nodejs.org) •npm (curl http://npmjs.org/install.sh | sh) •JUTE (npm install jute –g) Yahoo’s: % yinsti –b test jute
- 7. What To Test Your Function/Method ONLY!! Mock/Manage Dependencies: •Explicit •Internal •Environment
- 8. Run In Browser Load up your HTML & let it fly!
- 9. Run Within JUTE - Browser % npmconfig set jute:<variable><value> %.... % yinst restart jute –g Load JUTE web UI & run some tests!
- 10. Run Within JUTE – Command line % jute_submit_test –test …. In parallel each captured browser runs every test
- 11. Run Within JUTE – Selenium Grab latest selenium-server-standalone % java –jar selenium… % jute_submit_test –sel_host<> --test … Serialized tests
- 12. Run Within JUTE – V8 % jute_submit_test –v8 <> --test … Serialized tests
- 13. Run Within JUTE – Selenium Grid % jute_submit_test –sel_host<> -- seleniums 5 --test … Tests in ‘seleniums’ chunks to each Selenium slave in parallel. Will block if you don’t have enough slaves!
- 14. Keep Writing Those Tests!! Yahoo wants 75% coverage!
Editor's Notes
- Get manager-speak out of the wayYou have heard all of this before from industry – from manager – from co-workers - there’s a reason: less pain for you – less pain for you managers – better codeWhy everyone all up in me about these things?You probably already agree it’s a good thingmanagers NEED you to succeedSmall = testableSimple = testable – minimize side effects – side effects harder to test – harder to capture – harder to explain
- Lots of little – no bigPer function – test ONE THING AT A TIMEDo no create - injectIsolate what you want to testMocking out dependenciesCreating causes tight couplingClever comes later – if at all – don’t get cute or too clever – optimize LATER
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -
- NOWDon’t have to test first -