![]() ![]() ![]() But i am not understating how to properly use jest. This includes configuring the resource to prepare it for testing, such as. How to mock S3 with jest Ask Question Asked 3 years, 4 months ago Modified 1 year, 3 months ago Viewed 38k times Part of AWS Collective 21 I am tryng to code a test for upload. We define the test class and a setUp() method and initialize the mock AWS resource. Using the setUp() method allows you to define and configure the mocked global AWS Resources before the tests are run. // No need to import aws-sdk in the test file, we will mock it! // ⚠️ Mock instance needs to be initialized before the module-in-test is required, // otherwise will get this error: // "ReferenceError: Cannot access 'mockIotDataInstance' before initialization" // // ⚠️ Variable name is ALSO IMPORTANT! It has to start with 'mock', // otherwise we will get this error: // "ReferenceError (.) // The module factory of `jest.mock()` is not allowed to reference any out-of-scope variables. Mocking AWS with Jest (and TypeScript) - DEV Community Matt Morgan Posted on Updated on Mocking AWS with Jest (and TypeScript) aws typescript jest testing This seems like a very punny subject, mocking the world's leading cloud provider. The mocked AWS resources will be used during the unit test suite. ![]()
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