Overview
Let’s learn about test case design in this tutorial. A test case is a set of conditions or inputs to test the various functionalities of a software application to ensure that it performs as expected. A test suite is a collection of related test cases.
Test Case Design
Test case design is the process of creating test cases and test suites for the
software application under test. It is the work of producing and writing test cases/test suites for testing software.
To design an effective test, it is essential to define the test case with great care and attention to detail. This involves providing specific and detailed input to the system being tested, which enables the tester to determine whether the tests have been successful or not. Understanding requirements and the purpose of the input in the system is crucial in evaluating the outcome of the tests.
The test case designing includes.
- Understanding requirements.
- Identify test scenarios
- Test case writing. Create test cases to find defects with effective validation.
- Test case design techniques like BVA, EP, Requirements-based testing, Decision Table, etc.
- Testcase Review
Understanding Requirements
Before designing test cases, it’s critical to understand the software’s functional and non-functional requirements thoroughly. This often involves reviewing requirement documents, user stories, or software specifications(SRS).
Identify Test Scenarios
This involves identifying test scenarios that need to be tested. For each requirement, several test cases might be written to cover different aspects like positive and negative cases, boundary conditions, etc.
Test Case Writing
Test cases are documented using the Test management tool. Each test case is documented with the following details:
- Testcase ID: A unique identifier for the test case.
- Test Description: A summary of the test case.
- Preconditions: Any pre-existing conditions that must be met before the test is executed.
- Test Steps: A detailed sequence of steps to perform the test.
- Test Data: The data required for testing.
- Expected Result: The expected outcome of the test.
- Actual Result: The actual outcome (filled out during test execution).
- Postconditions: The state of the system after the test.
- Pass/Fail Criteria: The criteria determining whether the test has passed or failed.
Test case Review
Peers or stakeholders usually review test cases to ensure they are comprehensive and accurate.
The test design may require knowledge of the software business, functionality, and domain knowledge to test. The test suite should contain a sufficient number of test cases for efficient testing and time-saving. Effective planning skills are required to design test cases considering the test effort, cost, and time needed to complete them.
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