A test case is the practical thing it  contains 3 parts there are:

• Set of inputs

• Execution conditions

• Expected outputs

Set of inputs:

• These are the data items that are received from the external sources that may be hardware,software or a human.

Expected conditions:

• There are some conditions that are required for running the test.

• They may be required databases,required configuration and a hardware devices

Expected output:

• Before testing we have a clear idea about the output of particular test case so that at the end it 

• needs to produce specific results by the code under test

Test:

• A test is a group of test cases or a group of test procedures.

Test Oracle:

• Test oracle can be said as a document where we can write the test cases based on our 

• requirements we have to test whether the test has been passed or failed.

Test Bed:

• A test is an environment where we can have the hardware and software that can be used to test the software system.