Integration testing is a software testing method to test whether the interaction and integration between different modules are working properly.
Following are the main reasons for integration testing:
Find errors between modules
While doing integration testing, testers can detect bugs and defects due to the interaction between different modules.
Improve system reliability
Through integration testing, testers can determine whether the various parts of the system are successfully integrated together, thereby improving the reliability of the system.
Reduce test cost
Integration testing can help testers find defects and errors at an earlier stage, thereby reducing later testing costs and development costs.
reduce risk
When conducting integration testing, testers can identify critical paths between modules and possible risks, so that measures can be taken to reduce risks as early as possible.
Improve the development process
Integration tests can help improve the development process by providing feedback to the development team about the correctness and efficiency of their code.
Running an integration test requires the following steps:
Create a test plan
The test plan should include information such as test scope, time, resources, and test strategy. Test strategy includes test method, test case design, test environment and test data, etc.
Identify integration points
Determine the integration point of the module under test as the focus of the test. Each module is tested to determine data transfer and information flow to each other.
Define test cases
Test cases should be defined based on requirements, user stories or functional specifications. Test cases include test scenarios, expected results, and input data to ensure that each test case is independent and exhaustive, and can cover each test scenario.
Configure the test environment
Set up the test environment to be as similar as possible to the production environment. In order to ensure the accuracy of test results, the same components or modules need to be deployed in the test environment.
Execute the test case
Run the defined test cases, and if any problems are found, they need to be recorded in the error tracking system in time.
Report and track issues
Record test results, including test coverage, test case results and errors, etc. Report issues to the development team and track their resolution in the bug tracking system.
test again
After the development team resolves the reported bug, the integration point needs to be tested again to verify that the issue has been resolved. Test whether new errors will be generated.
repeat test
If integration testing involves multiple iteration cycles, the above process needs to be repeated to ensure the quality of the final delivered product.