Automation has a very important role in the IT world. Faster and short releases are trendy. Agile development has gained remarkable achievement in the software industry.
Essentials API Testing
With the GUI tests, there are several obstacles in software testing. To specify a few are there:
- It is possible that these Tests can fail frequently due to frequent changes in the User Interface.
- Supplementary maintenance and refactoring efforts.
- It needs a large number of efforts to maintain and stable the test process.
- An API inputs to the implementation layer, releasing only the objects required by the developers. It dwells on the REST methods. The meaning of the REST method is to produce, modify, and delete the data in the application’s database.
Requirement of an API Documentation
- API Documentation
- Different types of API tests
Benefits of API Documentation.
Documentation of any technology is very helpful for the acceptance and its operation. Without any documentation and the knowledge of any tool, it’s very hard to understand how to use it.
- Reduces user failures.
- Validate useful functions.
- Financial support.
Resource Description
There are several endpoints that can be used to access resources. Resources and endpoint descriptions are mostly accurate. Besides this, the user guide provides detailed information.
Endpoints
The endpoint is an important feature of the API documentation. To make the request the developers implement that documentation. Endpoints specify the ways to access the resources. The methods intended for acceptable interactions i.e. GET, PUT, POST, or DELETE with the resource. The endpoint displays the end path of a resource and that endpoint doesn’t include a common base path to every endpoint.
Parameters
Types of parameters:
- Header parameter: These parameters are passed into the request headers. They are mostly linked to the authorization and covered under an independent section of authorization exigency for standard header parameters.
- Path parameter: These are the part of the endpoint. We usually mentioned path parameters with curly braces. i.e. /Account/v1/User/{UserId}, in this parameter {UserId} is the path parameter.
- Query parameter: It is always mentioned in the URL end. Additionally, the Query Parameter is affixed to the URL after adding ‘?’ at the end of the URL.
- Request body parameters: A JSON object is submitted in the request body several times in a POST request.
Types of API Tests
In actual testing of the APIs, we should compile concurrent information of the APIs.
- Validation Testing: It forms one of the last pieces in the software development process. It nourishes the testing explicitly done to estimate the product, its behaviour, and its efficiency. In addition, the testing of API’s behaviour to access the correct data is a part of Validation testing.
- Functional Testing: This is one of the extensive types of testing. Its purpose is to test detailed functions. While testing the APIs for functional testing, the estimate of the responses received happens against expected responses in terms of passing parameters.
- UI Testing: UI Tests turn to be more precise. These tests check the user interface APIs and their connecting parts. In addition, the tests are more summarized with a spotlight on API health.
- Load Testing: Load Testing is mainly used for the functional and performance of the APIs under load. The test results form the baseline to conduct further load testing. In addition, the testing includes the API to the maximum possible traffic to validate the exact behavior of the API under full loads.
- Error Detection: It is the test for APIs, which includes monitoring, inducing execution errors, sending invalid requests, detecting operational leaks, etc. falls under this category. The testing of these APIs is implemented to ensure that the errors are detected, handled as well as routed.
- API Security tests: Specifically the tests verify the APIs performance for accountability from external hazards. Some of these tests are Security testing, Penetration testing, and Fuzz testing. In terms of Security requirements, Security testing involves validation of the APIs. As a part of Penetration testing, an authorized attack launches against the system. It evaluates the security of the API. In Fuzz testing, assessment of API behavior happens.
- Integration testing: In API communication with another module of APIs the Integration tests.
- Reliability testing: For different configurations, the API should display a prompt response to look for a response data structure as a part of testing
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