add Espresso tests for TableDisplayActivityTest

[Chinex-Boroja]

PR Description:

Add Espresso tests for verifying UI elements, fragment transactions, and RecyclerView interactions in the TablesDisplayActivity

Changes Made

• Added Test Case: testOnCreate

  • Description: Verifies that the RecyclerView is displayed when the activity is created

• Added Test Case: testRecyclerViewItemClick

  • Description: Simulates a click on an item in the RecyclerView and verifies that the TableDisplayActivity is launched.

• Added Test Case: testFragmentTransaction

  • Description: Adds a TableManagerFragment to the activity and verifies that it is added successfully

• Added Test Case: testTableDetailsDisplay

  • Description: Simulates selecting a table and verifies that the details are displayed correctly.