Testing : What is a test case?

A test case is a document that describes an input, action, or event
and its expected result, in order to determine if a feature of an
application is working correctly. A test case should contain
particulars such as a...
• Test case identifier;
• Test case name;
• Objective;
• Test conditions/setup;
• Input data requirements/steps, and
• Expected results. Please note, the process of developing test cases
can help find problems in the requirements or design of an
application, since it requires you to completely think through the
operation of the application. For this reason, it is useful to prepare
test cases early in the development cycle, if possible.