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/isoWeeksInYear.test.js |
unit
|
javascript | This Jest unit test verifies the correct calculation of ISO weeks in years using the Day.js isoWeeksInYear plugin. |
| test/plugin/relativeTime.test.js |
unit
|
javascript | This Jest unit test verifies relative time calculations and formatting in the Day.js library against Moment.js implementations. |
| test/plugin/weekday.test.js |
unit
|
javascript | This Jest unit test verifies Day.js weekday plugin functionality across multiple locales by comparing with Moment.js implementations. |
| test/plugin/minMax.test.js |
unit
|
javascript | This Jest unit test verifies the minMax plugin’s ability to find minimum and maximum dates in Day.js with various input scenarios. |
| test/plugin/utc-utcOffset.test.js |
unit
|
javascript | This Jest unit test verifies UTC and timezone offset functionality in the dayjs library against moment.js implementations. |
| test/plugin/weekOfYear.test.js |
unit
|
javascript | This Jest unit test verifies Week of Year calculations and formatting in Day.js by comparing results with Moment.js reference implementation. |
| test/utils.test.js |
unit
|
javascript | This Jest unit test verifies core utility functions for string formatting, timezone handling, and padding operations in Day.js |
| test/comparison.test.js |
unit
|
javascript | This Jest unit test verifies date comparison methods (isSame, isAfter, isBefore) in Day.js across different time granularities |
| test/display.test.js |
unit
|
javascript | This Jest unit test verifies dayjs library’s date formatting, manipulation, and comparison functions against moment.js implementation. |
| test/issues/issue2027.correct-order.test.js |
unit
|
javascript | This Jest unit test verifies correct plugin ordering between objectSupport and Duration functionality in Day.js date operations. |