| Button |
Triggers an action when pressed. |
Enter key functions as submit; Tab moves focus to the next element. |
Enter or Tab does not function as expected. |
| Input field |
Used to transmit information and interact with the application. |
Trimming whitespace in input fields works correctly; all editing methods (Insert, Delete, etc.) function properly. |
Leading/trailing spaces remain; input doesn't allow all editing methods (Ctrl+C/V, etc.); improper handling of fractions (1.5 | 1,5 | ⅕). |
| Search |
Allows users to quickly find relevant information. |
Wildcard symbols (*, ?) work as expected; search queries with or without spaces or hyphens return the same results; input in different keyboard layouts is handled correctly. |
Wildcard symbols do not function; search with different formatting (spaces, hyphens) returns inconsistent results; incorrect handling of alternative keyboard layouts. |
| Login form |
Enables users to access specific features or restricts their access. |
Inputting correct credentials allows access to restricted features; incorrect inputs result in appropriate error messages. |
Error messages do not appear for incorrect inputs; incorrect validation for special characters or excessive input lengths. |
| Calendar |
For selecting dates (e.g., tickets, reservations). |
Correctly handles invalid dates (e.g., June 31, February 29 in non-leap year); prevents selection of past dates. |
Allows selection of invalid dates; users can purchase tickets for past dates. |
| Date and time |
Displays schedules, such as transport arrival times. |
Time is synced correctly with the server, regardless of user time zone; correctly handles changes in time zones. |
Time displayed is incorrect due to time zone mismatches; synchronization errors with server time. |
| Error messages |
Inform the user of incorrect application functionality or user actions. |
Error messages are clear, informative, and easy to understand; appear when browser settings disable certain functionalities. |
Error messages are vague or fail to appear when browser settings affect functionality. |
| Pop-ups and tooltips |
Guide the user through the appropriate scenario. |
Pop-ups close correctly using various methods (clicking button, "X", ESC key, clicking outside the pop-up). |
Pop-ups remain on screen or cause errors when trying to close them using different methods; refreshing the page during server requests causes errors (e.g., during a purchase transaction). |