![]() ![]() ![]() Further down the window displays detailed information about individual tests and requests such as the duration of each request and which assert statements succeeded. Next, run the collection and if everything goes well a green circle will indicate the number of tests that have passed. To run a collection, locate the test “runner” which can be found in the upper left corner.įrom here select the collection and any environment created for that collection. Once the set of requests is filled with excellent tests saved, configure Postman to run these tests all together as a collection. It is advised to create tests that cover a large range of requirements, for example, create a test that ensures that one of the endpoints should return a body with certain data fields. With all of that in mind, we can now repeat the process of creating requests and tests for all of our server’s endpoints. One of the important points to take note of is environments can also be shared in the same way as collections can. Essentially they allow you to store a set of key or value pairs which can be utilised in requests and tests. Postman environmentsīefore moving on to creating numerous requests and tests, it might be useful to understand how environments in Postman work. By doing this we are able to provide non-engineering staff with the ability to quickly test our development environment endpoints without requiring any form of checking out code or bulky servers running locally. We also use shareable links to share collections with our product and testing team members. We like to keep test collections in source control so that each developer has a central location to pull the tests from. These collections can then be shared with other developers by using shareable links or by exporting the collection into a JSON file which can then be shared in any manner. Collections allow you to organise requests together into logical groupings. Now that we are happy with our newly created test we can save our request along with its test into a Postman collection. More information about the syntax of Postman tests and how to create them can be found here.Ĭontinuing with this test, we resend the request and ensure that our test is passing. The Postman testing suite comes with a set of useful features such as setting up environment variables and global variables to use in subsequent request bodies, converting response content type and setting up response object definitions to be automatically validated. On the right-hand side of the test tab is a list of links which generate code to make testing through Postman a bit easier. All we need to do is enter the “tests” tab of the Postman request and start writing out the test. Let’s say for example we want to create a test for the above-specified endpoint and ensure that all requests made to it return a 200 HTTP status code. With Postman, we can create elegant tests for our endpoints using a few lines of code. This request is not complex at all, in fact, it's about as basic as it gets but it accomplishes its job of communicating with the locally-hosted backend and returning a response. Another very powerful but underused feature in Postman's set of tools is the ability to create and automatically run a collection of tests.Ī typical request to a locally hosted backend using the Postman desktop application may look something like this: While this example certainly serves a purpose to a development team, it's merely a small snippet of the full benefits that can be realised by using Postman. The most frequent use case for a developer consists of debugging an API which was recently changed or broken by sending a request to the endpoint in question. Postman provides developers with a set of tools that support every stage of the API lifecycle. A very useful tool that can help you create integration tests is Postman. This usually involves testing a deployed version of your code and because of this, integration tests are generally perceived to be time-consuming and difficult to create. Integration tests allow you to ensure all of the different units of code that make up your application are able to work together cohesively without any trouble. Another form of testing that is arguably more difficult to include in your projects is integration testing. Writing unit tests that ensure individual sections of an application or service are running correctly is a process deeply ingrained in most developers’ workflow. ![]()
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