UPDATE: using a '-watch' model, using git commits to control test coverage, got the original tests to almost acceptable rates (~10 seconds for test and coverage report) I would prefer something on the order of 1-2 seconds, but I think this is something we can at least work with. - 1 Does this scene in your unit tests look familiar Printing variables to the console trying to find where your code is misbehaving can be a painful experience swapping between the code and an external terminal takes time and patience.I welcome any help, suggestions, or advice for strategies or techniques to improve the jest performance and get closer to the mocha+chai+nyc timings. Also, the functionality demonstrated in this sample is useful, as well, since the production app will need similar features as demonstrated in the sample, to run correctly. I did not remove the existing sample tests created by this template, but do not believe removing them would improve much the actual timings. In addition to that, you can also debug unit tests and build scripts. template typescript, followed by adding the stub file, and loadtest folders. With WebStorm, you can debug all kinds of applications written in JavaScript, TypeScript, or Dart: Node.js, React Native and Electron applications and, of course, client-side applications written using different frameworks, such as, Angular, Vue.js, and others. Note: I created the jest test folder using npx create-react-app. our production app, with similar range of test suite size, takes 20+ s after all possible improvements I have been able to find online - I started from a baseline 60+ s run time.Below are the most interesting improvements available in WebStorm 2023.2 EAP 6. mocha+chai takes ~4s to run the tests on my machine. 2 days ago &0183 &32 Important WebStorm EAP builds are not fully tested and might be unstable.jest takes ~15s to run the tests on my machine.This test repository / suite is large (~27K individual assertions), but simulates the scope and raw test counts I'm targeting in our production app. I'm looking for any suggestions on strategies or approaches that can be applied to this project, specifically, to get the jest run time to somewhat closer to mocha. See Īlso in this project is second folder with identical tests, except using a mocha+chai+nyc setup to provide evidence that faster testing time should in theory be possible. I have created a repo to explore this further and try to find other options to improve the performance. I have been working to try and implement a "Red Green Refactor" code workflow in our production code base, but the time taken to run tests severely impacts the ability to do this flow efficiently. Presets: in a file in your project root directory.I too have been struggling with Jest performance on our production react app. To add a with at least the following config // I have no issue to get debugger stop on proper line in the test file, but I cannot get it stopped in the source files. Simple way to run or debug a specific testĪdd the following command to settings, to pass commandline arguments "jestrunner.jestCommand": "npm run test -"įor debugging JST/TSX with CRA you need to have a valid babel and jest config: WebStorm TypeScript and Jest - debugger stops only on breakpoints in tests, never in source files Follow Marekurbanowicz Created Aug11:34 Hi, I am using TypeScript and Jest. Vscode-jest-runner is focused on running or debugging a specific test or test-suite, while vscode-jest is running your current test-suite everytime you change it. Open VSX Registry Comparison with vscode-jest Please contact me at Visual Studio Code Marketplace Looking for collaborators to help me maintain the project.
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