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Testing in 2024

Rainer Hahnekamp
May 24, 2024
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Testing in 2024

Rainer Hahnekamp

May 24, 2024
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  1. RainerHahnekamp About Me... Professional NgRx https://www.youtube.com/ @RainerHahnekamp https://www.ng-news.com https://github.com/softarc-consulting/sheriff •

    Rainer Hahnekamp ANGULARarchitects.io • Developer / Trainer / Speaker Modern Spring for Angular @RainerHahnekamp
  2. RainerHahnekamp Jasmine (Karma / Web Test Runner) ✅ Official Testing

    Solution ✅ Supported by Angular • No Issues with ESM • No Issue with Build Process • Used by Angular Material, Framework, etc. ✅⛔Full Browser Support ⛔ Not Supported by Nx ⛔ Not so fast as others
  3. RainerHahnekamp Jest ✅ Major Testing Framework in JavaScript ✅ Parallelization

    Support ✅ "Affected Mode" ✅ Upcoming Official Support ✅⛔ Depends on Community Contributions ⛔ History of ESM Issues ⛔ Asynchronous Tasks harder than in Jasmine
  4. RainerHahnekamp Vitest ✅ Modern Testing Framework ✅ Based on Vite

    ✅ Faster than Jest ✅ Jest Compatibility ✅⛔ Support only via Analog ⛔ Not that much used in Angular
  5. RainerHahnekamp Cypress ✅ Most used E2E Framework ✅ Great Developer

    Experience ✅ Stable Tests ✅ Official Partner of Angular ⛔ Parallelization and Test Replay via Cypress Cloud ⛔ Minor Constraints due to "In-Browser Tests"
  6. RainerHahnekamp Playwright ✅ Future #1 E2E Testing Framework ✅ Parallelization

    and Traceview out of the Box ✅ No Constraints due to "Outside-Browser Tests" ⛔ Not an Official Partner of Angular
  7. RainerHahnekamp Testing Library ✅ Boosts Testing DX ✅ Enforces certain

    Testing Style ✅ Huge Ecosystem ✅⛔ Runs on top of Jasmine, Jest,... ⛔ No E2E DX Cypress Component Testing ✅ E2E DX ✅ Integrated into Angular ✅ Lower Maintenance Costs ⛔ Minor Technical Constraints ⛔ Build Issues ⛔ *Not Actively Maintained Playwright Component Testing ✅ E2E DX ✅ Integrated into Angular ✅ Lower Maintenance Costs ✅⛔ Community Driven ⛔ Experimental
  8. RainerHahnekamp Further Reading • Martin Fowler ◦ https://martinfowler.com/articles/2021-test-shapes.html ◦ https://martinfowler.com/articles/mocksArentStubs.html

    • Guillermo Rauch ◦ https://twitter.com/rauchg/status/807626710350839808 • Kent Dodds ◦ https://kentcdodds.com/blog/write-tests • Spotify Blog ◦ https://engineering.atspotify.com/2018/01/testing-of-microservices/ • Ramona Schwerig ◦ https://www.smashingmagazine.com/2023/09/long-live-test-pyramid/ • Alex Rickabaugh ◦ https://github.com/angular/angular/issues/54438#issuecomment-1971813177 • Nx & Karma ◦ https://github.com/nrwl/nx/issues/19770 • Cypress Issue on improving Component Testing for Angular ◦ https://github.com/cypress-io/cypress/issues/26243 • Douglas Parker on official Jest Support ◦ https://github.com/angular/angular-cli/issues/25217#issuecomment-1581581005