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Svelte with Test-Driven Development

You're reading from   Svelte with Test-Driven Development Advance your skills and write effective automated tests with Vitest, Playwright, and Cucumber.js

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Product type Paperback
Published in Jun 2023
Publisher Packt
ISBN-13 9781837638338
Length 250 pages
Edition 1st Edition
Languages
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Author (1):
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Daniel Irvine Daniel Irvine
Author Profile Icon Daniel Irvine
Daniel Irvine
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Table of Contents (22) Chapters Close

Preface 1. Part 1: Learning the TDD Cycle
2. Chapter 1: Setting up for Testing FREE CHAPTER 3. Chapter 2: Introducing the Red-Green-Refactor Workflow 4. Chapter 3: Loading Data into a Route 5. Chapter 4: Saving Form Data 6. Chapter 5: Validating Form Data 7. Chapter 6: Editing Form Data 8. Part 2: Refactoring Tests and Application Code
9. Chapter 7: Tidying up Test Suites 10. Chapter 8: Creating Matchers to Simplify Tests 11. Chapter 9: Extracting Logic Out of the Framework 12. Chapter 10: Test-Driving API Endpoints 13. Chapter 11: Replacing Behavior with a Side-By-Side Implementation 14. Chapter 12: Using Component Mocks to Clarify Tests 15. Chapter 13: Adding Cucumber Tests 16. Part 3: Testing SvelteKit Features
17. Chapter 14: Testing Authentication 18. Chapter 15: Test-Driving Svelte Stores 19. Chapter 16: Test-Driving Service Workers 20. Index 21. Other Books You May Enjoy

Adding Cucumber Tests

Up until now, you have seen two types of automated tests: Vitest unit tests and Playwright end-to-end tests. This chapter adds a third type of test: Cucumber (https://cucumber.io).

Just like Playwright, Cucumber has its own test runner, which is typically set up to drive your application in the same way as Playwright does. The difference is that Cucumber tests are not written in JavaScript code.

Cucumber tests are contained within feature files that contain tests formatted in a special syntax known as Gherkin. These tests, known as features and organized into scenarios, read like plain English. That has a couple of advantages.

First, they can be written and understood by the whole team, not just developers. That means you can extend test-first practices outside of the development team.

Second, the absence of code encourages you to write tests that focus on user behavior rather than the technical details of the software. That, in turn, encourages you...

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