Day.js Testing – Jest Unit Testing Implementation
The dayjs library's testing suite demonstrates a comprehensive unit testing approach using Jest as the primary testing framework. The test suite includes 92 test cases covering core utilities, plugin functionality, and locale-specific features, with particular attention to datetime manipulation, formatting operations, and TypeScript declarations verification. Qodo Tests Hub provides developers with detailed insights into dayjs's testing patterns, making it easier to understand how to effectively test datetime libraries. Through the platform, developers can explore real-world examples of Jest unit tests, examine timezone handling implementations, and learn best practices for testing internationalization features. This practical knowledge helps teams implement more robust testing strategies in their own projects.
| Path | Test Type | Language | Description |
|---|---|---|---|
| test/browser.spec.js |
unit
|
javascript | This browser-based unit test verifies dayjs library installation and core date manipulation APIs in browser environments. |
| test/constructor.test.js |
unit
|
javascript | This Jest unit test verifies Day.js constructor functionality and instance type checking mechanisms. |
| test/get-set.test.js |
unit
|
javascript | This Jest unit test verifies date/time get and set operations in dayjs by comparing them with moment.js implementation. |
| test/locale.test.js |
unit
|
javascript | This Jest unit test verifies locale handling and internationalization features in Day.js, including instance and global locale settings, inheritance, and fallback behaviors. |
| test/locale/ar-dz.test.js |
unit
|
javascript | This Jest unit test verifies Arabic (Algeria) locale meridiem formatting in Day.js library |
| test/locale/ar-iq.test.js |
unit
|
javascript | This Jest unit test verifies Arabic (Iraq) locale meridiem formatting in the Day.js library. |
| test/locale/ar.test.js |
unit
|
javascript | This Jest unit test verifies Arabic locale formatting, parsing, and relative time handling in the dayjs library. |
| test/locale/bg.test.js |
unit
|
javascript | This Jest unit test verifies Bulgarian locale implementation in Day.js by comparing its output with Moment.js across various date formatting scenarios. |
| test/locale/cs.test.js |
unit
|
javascript | This Jest unit test verifies Czech locale relative time formatting in Day.js by comparing outputs with Moment.js reference implementation. |
| test/locale/en.test.js |
unit
|
javascript | This Jest unit test verifies Day.js date formatting across multiple English locale variants using the localizedFormat plugin. |