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/plugin/objectSupport.test.js |
unit
|
javascript | This Jest unit test verifies Day.js object support plugin functionality for date manipulation and formatting operations. |
| test/plugin/pluralGetSet.test.js |
unit
|
javascript | This Jest unit test verifies plural getter and setter methods in dayjs by comparing them with moment.js implementations. |
| test/plugin/preParsePostFormat.test.js |
unit
|
javascript | This Jest unit test verifies Day.js preParsePostFormat plugin’s date string transformation and formatting capabilities. |
| test/plugin/quarterOfYear.test.js |
unit
|
javascript | This Jest unit test verifies the quarterOfYear plugin functionality in Day.js, including quarter calculations, manipulations, and boundary operations. |
| test/plugin/timezone.test.js |
unit
|
javascript | This Jest unit test verifies Day.js timezone plugin functionality including parsing, conversion, DST handling, and UTC operations. |
| test/plugin/toObject.test.js |
unit
|
javascript | This Jest unit test verifies the toObject plugin’s ability to convert Day.js instances to plain JavaScript objects with Moment.js compatibility. |
| test/plugin/toArray.test.js |
unit
|
javascript | This Jest unit test verifies the toArray plugin’s ability to convert dayjs date objects into array format with moment.js compatibility. |
| test/plugin/updateLocale.test.js |
unit
|
javascript | This Jest unit test verifies Day.js updateLocale plugin functionality and compatibility with Moment.js locale implementations. |
| test/plugin/utc.test.js |
unit
|
javascript | This Jest unit test verifies UTC date handling and timezone conversions in the Day.js library against Moment.js implementation. |
| test/plugin/weekYear.test.js |
unit
|
javascript | This Jest unit test verifies week-based year calculations in the Day.js weekYear plugin against Moment.js reference implementations. |