The description should tell the tester what they’re going to test and include any other pertinent information such as the test environment, test data, and preconditions/assumptions.
Any preconditions that must be met prior to the test being executed.
Any assumptions that apply to the test
The test steps should include the data and information on how to execute the test.
This is perhaps the most important part of a test case.
Keep this section clear and concise (a list would be fine), but don’t leave out any necessary details.
The expected result tells the tester what they should experience as a result of the test steps.
This is how the tester determines if the test case is a “pass” or “fail”.