Black Box Testing vs White Box Testing

If the defect is caught in the unit testing, low-level design, or coding phase, it needs to be corrected, and unit testing is repeated. Often, insufficient time is provided during development to complete coding and testing. This is due to the business demands of launching the application in the market. This leads to defects being introduced and missed out during the testing phase. Smoke tests are basic tests that check the basic functionality of an application. They are meant to be quick to execute, and their goal is to give you the assurance that the major features of your system are working as expected.

  • Test basis should be well defined and adequately structured so that one can easily identify test conditions from which test cases can be derived.
  • This testing method is used at all stages of the software development cycle.
  • The process begins with the testing team understanding the requirement statement of the application.
  • An in-depth understanding of the system’s internal workings serves as the cornerstone of white box testing.
  • UAT as well as alpha and beta testing are described in the next testing types section.

You have previously learned about the test activities performed at a high level to meet the defined testing objectives; let us now find out how these activities are mapped to the different phases of a test lifecycle. It helps in identifying defects in the early phases of testing when the executable code is under development. When defects detected by the testing process are fixed, the quality of the software system increases. These seven principles of testing should be guides for all test engineers to help them plan and execute their tests. These principles are also useful for the management to understand testing and develop a realistic expectation from the test process. The sixth principle states that different software products have varying requirements, functions, and purposes; so same tests should not be applied across the board.

Software testing

Considering these facts, the decision to move a product to the next phase of the software development lifecycle is always accompanied by risk. User acceptance testing is performed with the objective of confirming whether the system works, as expected by the end users. This is the final stage of testing before deploying the code to production.

test basis meaning

Volume testing is a way to test software functions even when certain components (for example a file or database) increase radically in size. Stress testing is a way to test reliability under unexpected or rare workloads. Stability testing (often referred to as load or endurance testing) checks to see if the software can continuously function well in or above an acceptable period.

Testing and Quality

Conversely, in white box testing, the tester is knowledgeable of the internal design of the application and analyzes it during testing. A test case normally consists of a unique identifier, requirement references from a design specification, preconditions, events, a series of steps (also known as actions) to follow, input, output, expected result, and the actual result. It can occasionally be a series of steps (but often steps are contained in a separate test procedure that can be exercised against multiple test cases, as a matter of economy) but with one expected result or expected outcome. The optional fields are a test case ID, test step, or order of execution number, related requirement(s), depth, test category, author, and check boxes for whether the test is automatable and has been automated. Larger test cases may also contain prerequisite states or steps, and descriptions.

test basis meaning

There are numerous types of software testing techniques that you can use to ensure changes to your code work as expected. Not all testing is equal though, and we explore how some testing practices differ. In this technique, the control flow graph is used to detect logical inconsistencies that disrupt data flow. Reasons for anomaly detection include variables being used without initialization and initialized variables not being used. This technique covers all the possible results of every Boolean condition within the code through control flow charts and graphs.

Testing approach

Outside of work I’m sharpening my fathering skills with a wonderful toddler. This testing methodology is superior in terms of granularity; however, this comes at the cost of higher resource-intensiveness. Numerous methods are available for calculating branch coverage, the most common of which is pathfinding. This method uses the number of executed branch paths to calculate branch coverage. This method tests the internal coding and infrastructure of the software. It can be carried out by programmers and is suitable for Drupal specialists.

This is very expensive since it requires someone to setup an environment and execute the tests themselves, and it can be prone to human error as the tester might make typos or omit steps in the test script. Once the document is prepared, testing involves programmers, developers, and specialist testers. Testing methodologies such as equivalence partitioning and boundary value analysis are used to determine sets of valid inputs and their predicted outputs. The term black box symbolizes a black outer covering of the application, preventing testers from seeing its inner workings and compelling them to examine only the end-user experience. Likewise, the term white box signifies the application’s transparency, allowing the tester to see through the outer box and into the inner code.

If the errors made in the early phases are undetected, the impact is more complex in the later phases of the lifecycle. Exhaustive testing, also known as complete testing, is a test approach in which the test suite comprises all combinations of input values and preconditions. The objective of Operational testing is to ensure reliability and performance. Software should be tested to check whether it works satisfactorily even with the maximum expected workload. In the following section, we will look at the objectives of software testing.