What Is Pairwise Integration Testing

In this approach, integration occurs when all the components are in the same architectural domain. To be in the architecture, components must follow the same rules for integration. As we will see later in this article, the complexity increases greatly at the system integration level. The input values are given below that can be accepted by the fields of the given function. It can be hard to pass unknown dependencies of variables within the software. The same issue will happen when the combination creates repetitive sets.

Furthermore, integration testing can be seen in many ways which also increases the challenge. Testing of 4000 positive and negative test cases, is a very long and time-consuming process. One approach used today is to use Excel with macros to define all the combinations, which is very time-consuming to create and doesn’t optimize. These redundancies get carried over to the test automation, thereby impacting the cost to automate as testers then have more scripts to analyze, automate and run. Whether you can implement all-pairs as the sole software testing methodology depends on the application. The all-pairs method works well for testing configuration settings or form-entry application components.

Pairwise Testing Techniques

It is used to test all the possible discrete combinations of values. To achieve high quality and end-user’s satisfaction, testers employ various testing methods to identify and resolve defects in software applications. In this article, we will delve into the details of these two methods, exploring their benefits, techniques, and tools.

• With information scattered across multiple sources, there is a repeated effort to test the same or a similar test scenario, which fails to add value and takes up more time.
• The input values are given below that can be accepted by the fields of the given function.
• Pairwise testing is a black-box testing technique in which test cases are designed in a way that we cover every possible combination of input.
• While many people mainly think of APIs in a web-based or mobile application context, APIs are also used to interface with operating systems and other system components and applications.
• With Testsigma, a no-code test automation tool, you can automate your front-end tests for web, mobile, and desktop from the same place 5x faster.
• An example of this need for integration testing is in the domain of medical devices.

It is basically defined as a type of testing which verifies that each function of the software application works in conformance with the requirement and specification. More generally, we can imagine N-wise testing in which we consider all possible values of every grouping of N parameters. For each grouping, we identify the complete set of all possible values of the group’s N parameters. In a similar way, I have included values for variable ‘Book Language’ as French and English such that each of the row pairs is unique and covering all possible scenarios. Let’s try to place the next column ‘Book reserve method, such that it provides maximum test coverage, after placing online and in-house values it will look like this. Suppose we have to test an application known as “Phone Ordering System” which has following input parameters along with their set of permissible values.

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In Figure 4 we see how these levels of integration can be achieved in a pyramid-like approach. An example of this need for integration testing is in the domain of medical devices. Obviously, this is a domain where safety criticality is a very high concern and complexity can be very high due to the high number of configuration parameters.

In the conventional method, test suites include test cases that have been derived from all combination of input values and pre-conditions. Pairwise testing is an opportunity to determine the maximum number of bugs with the minimum number of checks. It is also a good way to perform software testing in limited periods. PICT (Pairwise Independent Combinatorial Tool) – this application is launched from the command line. The input for the program is a text file with parameters and specified values. At the component level, there are many conditions to consider which lead to higher numbers of tests.

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We have got ourselves 8 unique combinations for a sample that has 96 combinations. This is how the Pairwise testing technique reduces the number of test cases without compromising the test coverage. For example, if there is a software app with various inputs and various possible settings for each input, it is not practical to check all possible combinations for all of these factors. Thus, instead, a subset of combinations is created that satisfies all factors. As a result, a permutation and combination method simplifies system testing.

For example, when a train ticket has to be verified, factors such as – the number of passengers, ticket number, seat numbers, and train numbers have to be tested. It is more efficient when the QA engineer combines more inputs together and does testing. A form of integration testing that targets pairs of components that work together, as shown in a call graph. Let’s place the values for next variable ‘Book Bar Code’ as reserve or non-reserve. Again we can identify pairs as (Toronto, reserve) and (non-Toronto, non-reserve).

Pairwise Testing also known as All-pairs testing is a testing approach taken for testing the software using combinatorial method. It’s a method to test all the possible discrete combinations of the parameters involved. One more example is where Pairwise testing can also test relationships between two variables. It relies on the observation that most defects are caused by interaction of at most two factors. Hence a pair of two test parameters are chosen and all possible pairs of these two parameters are sent as input parameters for testing purpose.

One of the most commonly used testing techniques is pairwise testing. This article will discuss pairwise testing, its advantages, and its limitations. Pairwise testing aims to ensure that all possible discrete definition of pairwise integration testing combinations of inputs have been tested without the need to test every single combination. This can reduce the time and effort required for testing and the number of test cases that need to be written.