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Title: GitHub - irynaO/javascript-testing-best-practices: 📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2019)

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X Title: GitHub - irynaO/javascript-testing-best-practices: 📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2019)

Description: 📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2019) - irynaO/javascript-testing-best-practices

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https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#table-of-contents
Section 0: The Golden Rulehttps://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-0%EF%B8%8F%E2%83%A3-the-golden-rule
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-0-the-golden-rule
Section 1: The Test Anatomyhttps://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-1-the-test-anatomy-1
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-1-the-test-anatomy
Section 2: Backendhttps://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-2%EF%B8%8F%E2%83%A3-backend-testing
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-2-backend
Section 3: Frontendhttps://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-3%EF%B8%8F%E2%83%A3-frontend-testing
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-3-frontend
Section 4: Measuring Tests Effectivenesshttps://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-4%EF%B8%8F%E2%83%A3-measuring-test-effectiveness
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-4-measuring-tests-effectiveness
Section 5: Continuous Integrationhttps://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-5%EF%B8%8F%E2%83%A3-ci-and-other-quality-measures
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-5-continuous-integration
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-0️⃣-the-golden-rule
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#️-0-the-golden-rule-design-for-lean-testing
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https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-12-structure-tests-by-the-aaa-pattern
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-a-test-structured-with-the-aaa-pattern
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https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-no-separation-one-bulk-harder-to-interpret
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️13-describe-expectations-in-a-product-language-use-bdd-style-assertions
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https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-the-reader-must-skim-through-not-so-short-and-imperative-code-just-to-get-the-test-story
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-skimming-through-the-following-declarative-test-is-a-breeze
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️--14-stick-to-black-box-testing-test-only-public-methods
boy who cried wolfhttps://en.wikipedia.org/wiki/The_Boy_Who_Cried_Wolf
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-a-test-case-is-testing-the-internals-for-no-good-reason
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https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-️15-choose-the-right-test-doubles-avoid-mocks-in-favor-of-stubs-and-spies
https://martinfowler.com/articles/mocksArentStubs.html
Read here a reminder about test doubles: mocks vs stubs vs spieshttps://martinfowler.com/articles/mocksArentStubs.html
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-mocks-focus-on-the-internals
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https://camo.githubusercontent.com/8323d90b49dbdcb8e5cea6824183240e6cf480062089b904b67bce13e4eef4ee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304a6573742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clapdoing-it-right-example-randomizing-realistic-input
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-17-test-many-input-combinations-using-property-based-testing
see Fuzz Testinghttps://en.wikipedia.org/wiki/Fuzzing
js-verifyhttps://github.com/jsverify/jsverify
testcheckhttps://github.com/leebyron/testcheck-js
checkout fast-checkhttps://github.com/dubzzz/fast-check#readme
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap--doing-it-right-example-testing-many-input-permutations-with-fast-check
https://camo.githubusercontent.com/8323d90b49dbdcb8e5cea6824183240e6cf480062089b904b67bce13e4eef4ee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304a6573742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-18-if-needed-use-only-short--inline-snapshots
snapshot testinghttps://jestjs.io/docs/en/snapshot-testing
Inline Snapshothttps://jestjs.io/docs/en/snapshot-testing#inline-snapshots
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-coupling-our-test-to-unseen-2000-lines-of-code
https://camo.githubusercontent.com/8323d90b49dbdcb8e5cea6824183240e6cf480062089b904b67bce13e4eef4ee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304a6573742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-expectations-are-visible-and-focused
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️19-avoid-global-test-fixtures-and-seeds-add-data-per-test
also known as ‘test fixture’https://en.wikipedia.org/wiki/Test_fixture
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-tests-are-not-independent-and-rely-on-some-global-hook-to-feed-global-db-data
https://camo.githubusercontent.com/5eb943c8b1ed083e8fe9253a69ded852e21da5354052e833d9498988e8c51ef8/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304d6f6368612d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-we-can-stay-within-the-test-each-test-acts-on-its-own-set-of-data
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-110-dont-catch-errors-expect-them
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-a-long-test-case-that-tries-to-assert-the-existence-of-error-with-try-catch
https://camo.githubusercontent.com/5eb943c8b1ed083e8fe9253a69ded852e21da5354052e833d9498988e8c51ef8/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304d6f6368612d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-a-human-readable-expectation-that-could-be-understood-easily-maybe-even-by-qa-or-technical-pm
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-111-tag-your-tests
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-tagging-tests-as-cold-test-allows-the-test-runner-to-execute-only-fast-tests-coldquick-tests-that-are-doing-no-io-and-can-be-executed-frequently-even-as-the-developer-is-typing
https://camo.githubusercontent.com/8323d90b49dbdcb8e5cea6824183240e6cf480062089b904b67bce13e4eef4ee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304a6573742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️112-other-generic-good-testing-hygiene
TDD principleshttps://www.sm-cloud.com/book-review-test-driven-development-by-example-a-tldr/
red-green-refactor stylehttps://blog.cleancoder.com/uncle-bob/2014/12/17/TheCyclesOfTDD.html
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-2️⃣-backend-testing
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️21-enrich-your-testing-portfolio-look-beyond-unit-tests-and-the-pyramid
testing pyramidhttps://martinfowler.com/bliki/TestPyramid.html
it must be wrong sometimeshttps://en.wikipedia.org/wiki/All_models_are_wrong
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-cindy-sridharan-suggests-a-rich-testing-portfolio-in-her-amazing-post-testing-microservicesthe-sane-way
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/bp-12-rich-testing.jpeg
https://www.youtube.com/watch?v=-2zP494wdUY&feature=youtube
YouTube: “Beyond Unit Tests: 5 Shiny Node.JS Test Types (2018)” (Yoni Goldberg)https://www.youtube.com/watch?v=-2zP494wdUY&feature=youtu.be
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/bp-12-Yoni-Goldberg-Testing.jpeg
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️22-component-testing-might-be-your-best-affair
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-supertest-allows-approaching-express-api-in-process-fast-and-cover-many-layers
https://camo.githubusercontent.com/5eb943c8b1ed083e8fe9253a69ded852e21da5354052e833d9498988e8c51ef8/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304d6f6368612d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/bp-13-component-test-yoni-goldberg.png
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️23-ensure-new-releases-dont-break-the-api-using
Consumer-driven contracts and the framework PACThttps://docs.pact.io/
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example
https://camo.githubusercontent.com/1490b075387b0643d6948ea8bbf089988cb4dfc0a356c893dfa4b83896c05831/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e67253230504143542d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/bp-14-testing-best-practices-contract-flow.png
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-24-test-your-middlewares-in-isolation
using Sinon for examplehttps://www.npmjs.com/package/sinon
node-mock-httphttps://www.npmjs.com/package/node-mocks-http
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clapdoing-it-right-example-testing-middleware-in-isolation-without-issuing-network-calls-and-waking-up-the-entire-express-machine
https://camo.githubusercontent.com/8323d90b49dbdcb8e5cea6824183240e6cf480062089b904b67bce13e4eef4ee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304a6573742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️25-measure-and-refactor-using-static-analysis-tools
Sonarqubehttps://www.sonarqube.org/
starshttps://github.com/SonarSource/sonarqube
Code Climatehttps://codeclimate.com/
starshttps://github.com/codeclimate/codeclimate
https://github.com/TheHollidayInn
Keith Hollidayhttps://github.com/TheHollidayInn
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example--codeclimate-a-commercial-tool-that-can-identify-complex-methods
https://camo.githubusercontent.com/5a4947216b55f7a5473a74f7e110381c802d7197fe481080e38b1f57db8d03e1/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e67253230436f6465253230436c696d6174652d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/bp-16-yoni-goldberg-quality.png
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-26-check-your-readiness-for-node-related-chaos
Chaos engineeringhttps://principlesofchaos.org/
the chaos monkeyhttps://github.com/Netflix/chaosmonkey
kube-monkeyhttps://github.com/asobti/kube-monkey
node-chaoshttps://github.com/i0natan/node-chaos-monkey
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example--node-chaos-can-generate-all-sort-of-nodejs-pranks-so-you-can-test-how-resilience-is-your-app-to-chaos
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/bp-17-yoni-goldberg-chaos-monkey-nodejs.png
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️27-avoid-global-test-fixtures-and-seeds-add-data-per-test
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-tests-are-not-independent-and-rely-on-some-global-hook-to-feed-global-db-data-1
https://camo.githubusercontent.com/5eb943c8b1ed083e8fe9253a69ded852e21da5354052e833d9498988e8c51ef8/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304d6f6368612d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-we-can-stay-within-the-test-each-test-acts-on-its-own-set-of-data-1
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-3️⃣-frontend-testing
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-31-separate-ui-from-functionality
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-separating-out-the-ui-details
https://camo.githubusercontent.com/84d10bfad50a6d9a36736a963472a1d66cf403f0e0e41ec06bd6d199366d4c2d/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e6725323052656163742d626c75652e737667
https://camo.githubusercontent.com/62e38dd6e0c57c086806c5cf105b1f87011550a5fd28089be529d19990368da3/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e67253230526561637425323054657374696e672532304c6962726172792d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-assertion-mix-ui-details-and-data
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-32-query-html-elements-based-on-attributes-that-are-unlikely-to-change
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-querying-an-element-using-a-dedicated-attrbiute-for-testing
https://camo.githubusercontent.com/84d10bfad50a6d9a36736a963472a1d66cf403f0e0e41ec06bd6d199366d4c2d/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e6725323052656163742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-relying-on-css-attributes
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-33-whenever-possible-test-with-a-realistic-and-fully-rendered-component
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-working-realstically-with-a-fully-rendered-component
https://camo.githubusercontent.com/84d10bfad50a6d9a36736a963472a1d66cf403f0e0e41ec06bd6d199366d4c2d/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e6725323052656163742d626c75652e737667
https://camo.githubusercontent.com/6c4be90cbcc41f04ad70789098fd34a04c84983e881a4ae292ba4a6849e16f39/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e67253230456e7a796d652d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-mocking-the-reality-with-shallow-rendering
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-34-dont-sleep-use-frameworks-built-in-support-for-async-events-also-try-to-speed-things-up
Cypress cy.request('url')https://docs.cypress.io/guides/references/best-practices.html#Unnecessary-Waiting
@testing-library/dom method wait(expect(element))https://testing-library.com/docs/guide-disappearance
hurry-up the clockhttps://jestjs.io/docs/en/timer-mocks
wait-for-expecthttps://www.npmjs.com/package/wait-for-expect
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-e2e-api-that-resolves-only-when-the-async-operations-is-done-cypress
https://camo.githubusercontent.com/84d10bfad50a6d9a36736a963472a1d66cf403f0e0e41ec06bd6d199366d4c2d/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e6725323052656163742d626c75652e737667
https://camo.githubusercontent.com/62e38dd6e0c57c086806c5cf105b1f87011550a5fd28089be529d19990368da3/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e67253230526561637425323054657374696e672532304c6962726172792d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-testing-library-that-waits-for-dom-elements
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-custom-sleep-code
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-35-watch-how-the-content-is-served-over-the-network
https://camo.githubusercontent.com/e07f592d16cb581a3d7bfeca540431b9dcfa81e13e6d2a1b1a710c5b6ff7ee24/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e67253230476f6f676c652532304c69676874486f7573652d626c75652e737667
pingdomhttps://www.pingdom.com/
gcp StackDriverhttps://cloud.google.com/monitoring/uptime-checks/
lighthousehttps://developers.google.com/web/tools/lighthouse/
pagespeedhttps://developers.google.com/speed/pagespeed/insights/
meaningful painthttps://scotch.io/courses/10-web-performance-audit-tips-for-your-next-billion-users-in-2018/fmp-first-meaningful-paint
time until the page gets interactive (TTI)https://calibreapp.com/blog/time-to-interactive/
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-lighthouse-page-load-inspection-report
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/lighthouse2.png
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-36-stub-flakky-and-slow-resources-like-backend-apis
Sinonhttps://sinonjs.org/
Test doubleshttps://www.npmjs.com/package/testdouble
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-stubbing-or-intercepting-api-calls
https://camo.githubusercontent.com/84d10bfad50a6d9a36736a963472a1d66cf403f0e0e41ec06bd6d199366d4c2d/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e6725323052656163742d626c75652e737667
https://camo.githubusercontent.com/8323d90b49dbdcb8e5cea6824183240e6cf480062089b904b67bce13e4eef4ee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541372532304578616d706c652532307573696e672532304a6573742d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-37-have-very-few-end-to-end-tests-that-spans-the-whole-system
Cypresshttps://www.cypress.io/
Pupeteerhttps://github.com/GoogleChrome/puppeteer
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-38-speed-up-e2e-tests-by-reusing-login-credentials
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-logging-in-before-all-and-not-before-each
https://camo.githubusercontent.com/65196115ecfd1a2e8c62b6fd4f470e99d9b5d4953b6e40abedef82d93f84b8ef/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541382532304578616d706c652532307573696e67253230437970726573732d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-39-have-one-e2e-smoke-test-that-just-travels-across-the-site-map
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-smoke-travelling-across-all-pages
https://camo.githubusercontent.com/65196115ecfd1a2e8c62b6fd4f470e99d9b5d4953b6e40abedef82d93f84b8ef/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541382532304578616d706c652532307573696e67253230437970726573732d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-310-expose-the-tests-as-a-live-collaborative-document
BDD (behavior-driven testing)https://en.wikipedia.org/wiki/Behavior-driven_development
Cucumber which has a JavaScript flavorhttps://github.com/cucumber/cucumber-js
StoryBookhttps://storybook.js.org/
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-describing-tests-in-human-language-using-cucumber-js
https://camo.githubusercontent.com/9b9c75167cb78542052f2c770ec90691d24dc070f9a6f4f8665bcc2bcb71abfe/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541382532304578616d706c652532307573696e67253230437563756d6265722d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-visualizing-our-components-their-various-states-and-inputs-using-storybook
https://camo.githubusercontent.com/02246057d27ec584e5c84dad2e94c08cce3aeeff842051160b2f79a4ccbf8dee/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f2546302539462539342541382532304578616d706c652532307573696e6725323053746f7279426f6f6b2d626c75652e737667
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/story-book.jpg
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-311-detect-visual-issues-with-automated-tools
wraithhttps://github.com/BBC-News/wraith
Applitoolshttps://applitools.com/
Percy.iohttps://percy.io/
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#thumbsdown-anti-pattern-example-a-typical-visual-regression---right-content-that-is-served-badly
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices/blob/master/assets/amazon-visual-regression.jpeg
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-doing-it-right-example-configuring-wraith-to-capture-and-compare-ui-snapshots
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https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#section-4️⃣-measuring-test-effectiveness
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#-️-41-get-enough-coverage-for-being-confident-80-seems-to-be-the-lucky-number
Fowler: “in the upper 80s or 90s”https://martinfowler.com/bliki/TestCoverage.html
Jest linkhttps://jestjs.io/docs/en/configuration.html#collectcoverage-boolean
https://patch-diff.githubusercontent.com/irynaO/javascript-testing-best-practices#clap-example-a-typical-coverage-report
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npm audithttps://docs.npmjs.com/getting-started/running-a-security-audit
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like ncuhttps://www.npmjs.com/package/npm-check-updates
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see thehttps://nodesource.com/blog/a-high-level-post-mortem-of-the-eslint-scope-security-incident/
ncuhttps://www.npmjs.com/package/npm-check-updates
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