Add Tests for Clear Completed, Update Status, and Edit Task Functionality

[DevaWinner]

This pull request introduces new tests for the following functionalities: clearing completed tasks, updating task status, and editing task description. These tests are implemented using the Jest testing framework.

Changes Made

• Added a test for the clearCompleted function to ensure that completed tasks are correctly removed from the localStorage. This test verifies that the clearCompleted function properly removes completed tasks from the tasks storage item.

• Included a test for the updateTaskStatus function to validate the proper updating of task status in the localStorage. This test confirms that the updateTaskStatus function accurately modifies the completed status of a task in the tasks storage item.

• Implemented a test for the editTask function to ensure the correct updating of task descriptions in the localStorage. This test checks whether the editTask function appropriately modifies the description of a task in the tasks storage item.

• Reused the mock localStorage object created in a previous code snippet to facilitate testing. This allows for controlled manipulation and verification of stored data during the tests.

• Organized the test files using the describe method to group related tests.

• Mocked necessary DOM elements using JSDOM to simulate the HTML environment required for the tests.

• Please review and approve this pull request at your convenience.

Thank you!

[DevaWinner]

Concerning the webhint error, please reference below announcement;