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The scariest phrase for anybody testing web-dependent codebases is “third-party service”. Within the trendy panorama, it seems like virtually each a part of our software hinges on some exterior cloud-based dependency. Exams assist us really feel assured about our logic and that our code can deal with each anticipated and sudden conditions. Nonetheless, third-party companies, and particularly internet APIs, generally is a enormous ache to arrange and handle, main many builders to skip testing essential components of their codebase. At JetBrains, we hope {that a} new plugin will show you how to write extra assessments, really feel extra assured about implementing options, and finally ship higher software program.
On this publish, we’ll take a fast have a look at the brand new WireMock plugin launched with IntelliJ IDEA 2024.1. It really works in all JetBrains IDEs and supplies builders with a built-in mock server. We’ll additionally discover just a few options that ought to GET you excited.
What’s WireMock?
WireMock is a well-liked open-source instrument for API mock testing that enables builders to create secure take a look at and growth environments. WireMock presents a collection of options, together with JUnit assist, JSON templates, and document and playback instruments for straightforward seize and request playback. Along with HTTP APIs, WireMock helps newer codecs and protocols resembling webhooks, gRPC, and GraphQL.
In case your software code calls an online service of any form, WireMock can stub out endpoints to switch these calls, serving to you write higher software program.
IntelliJ IDEA WireMock plugin
Whilst you may use the WireMock suite to put in writing stubs in Java JUnit assessments to your HTTP companies, the WireMock mock API template choice is a cleaner and extra manageable method. Templates use a JSON file format to simulate any endpoint, and there’s even a public WireMock template library for fashionable third-party APIs. The one catch is that you should run a WireMock server to deal with consumer requests. Fortunately, the WireMock plugin is an embedded WireMock server in your JetBrains IDE.
Let’s have a look at operating a easy API. The favored XKCD comedian has a two-endpoint API that returns the most recent comedian and the related metadata. You could find the WireMock template API right here. Inserting the template in a mappings folder, you’ll instantly discover the WireMock server icon within the top-right nook.
Clicking the icon will begin the WireMock server and connect the present template for the XKCD API. It is best to see the WireMock server operating within the Providers instrument window.
To check the server is up and operating, you should use the built-in HTTP Consumer to make the suitable HTTP requests and examine the JSON response.
Should you’re an API creator, the WireMock plugin additionally presents methods to rapidly creator stubs utilizing the Endpoints instrument window. Proper-click any HTTP endpoint and select the Generate WireMock Stubs choice.
IntelliJ IDEA will place any generated stubs within the WireMock Stubs listing beneath the Scratches and Consoles part of the Mission instrument window. From right here, you possibly can modify the JSON template with full schema assist and code completion. Much like the earlier template, you possibly can launch these stubs utilizing the built-in WireMock server.
Conclusion
WireMock is a incredible choice for internet builders working with homegrown or consuming third-party APIs. The brand new WireMock plugin brings an improved workflow for working with and authoring WireMock templates, serving to you ship the standard software program your customers deserve.
To strive it out, obtain IntelliJ IDEA and search for the WireMock plugin within the Market tab, or set up it immediately from JetBrains Market.
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