Support loaders to preprocess files, i.e. Templates let you quickly answer FAQs or store snippets for re-use. Disables automatic mocking in the module loader. Is the amplitude of a wave affected by the Doppler effect? We're a place where coders share, stay up-to-date and grow their careers. all tasks queued by setTimeout() or setInterval() and setImmediate()). Copyright 2023 Meta Platforms, Inc. and affiliates. Exactly what I needed to get unblocked during a Jest upgrade. )*..+.-.-.-.= 100. If you don?t do so, it will result in the internal usage counter not being reset. Returns a Jest replaced property. JS clear timer of previous function call before new function call, How to run code on React.useReducer bailout, How do you simulate a useEffect to update state while testing React with React Testing Library, useEffect stops working after the first time useState's set becomes stale within a timer, Storing configuration directly in the executable, with no external config files. The trick is to set the delay option on the userEvent to null. Annoyingly, I'm still really confused as to when to use, Edit to my above comment: rtl claims that it doesn't do much: ", thanks, this should be bumped for anyone who's using the, useFakeTimers not working in jest/testing-library, testing-library.com/docs/preact-testing-library/api/#act], testing-library.com/docs/react-testing-library/api#act, https://onestepcode.com/testing-library-user-event-with-fake-timers/, The philosopher who believes in Web Assembly, Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The object keys are maintained and their values are mocked. Returns true if test environment has been torn down. test runs. Posted on Sep 7, 2020 Removed jest.useFakeTimers, issue was resolved. I have also tried just returning the user object i have as input instead of getting the user from the database, but that also does not work. What screws can be used with Aluminum windows? I tested the Lodash's debounce with upgraded react-scripts and Jest and it's working with useFakeTimers('modern'). Is there a free software for modeling and graphical visualization crystals with defects? and use real timers instead. If you want to overwrite the original function, you can use jest.spyOn(object, methodName).mockImplementation(() => customImplementation) or jest.replaceProperty(object, methodName, jest.fn(() => customImplementation)); Since jest.spyOn is a mock, you could restore the initial state by calling jest.restoreAllMocks in the body of the callback passed to the afterEach hook. Asking for help, clarification, or responding to other answers. You want a function that tells you if a date is in the future. Creates a new empty array, ignoring the original. All pending "macro-tasks" that have been queued via setTimeout () or setInterval (), and would be executed during this time frame, will be executed. Share Improve this answer In the following bare-bones example, the object under test is the Caller object. This new mock system will become the default in Jest 27. By default, jest.spyOn also calls the spied method. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I am logging any connections to my pool and it only says 1 idle connection and no active connections. Set the current system time used by fake timers. * like a generated module or a native module in react-native. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. github.com/facebook/jest/issues/10221 1 like Reply Rafael Rozon May 18 '21 Thank you for this! Should the alternative hypothesis always be the research hypothesis? To manually set the value of the seed use --seed= CLI argument. Use this method if you want to explicitly avoid this behavior. Finding valid license for project utilizing AGPL 3.0 libraries. If you want to set the timeout for all test files, use testTimeout configuration option. Why does my JavaScript code receive a "No 'Access-Control-Allow-Origin' header is present on the requested resource" error, while Postman does not? Asking for help, clarification, or responding to other answers. fetch) - you will need to advance microtasks queue as well as you do with fake timers. Every time Jest runs a seed value is randomly generated which you could use in a pseudorandom number generator or anywhere else. retryTimes (3); This system will allow you not only to mock timers as you already could but also to mock the system clock. What screws can be used with Aluminum windows? The new function has no formal parameters and when called will return undefined. New external SSD acting up, no eject option, Storing configuration directly in the executable, with no external config files. This is useful when you want to create a manual mock that extends the automatic mock's behavior: This is how createMockFromModule will mock the following data types: Creates a new mock function. See the Timer mocks doc for more information. I overpaid the IRS. Restores all mocks and replaced properties back to their original value. Even though we upgraded the react-scripts which has implementation for modern implementation of fake timer, we are still explicitly using jest-environment-jsdom-sixteen as the testing environment. Best JavaScript code snippets using jest.useFakeTimers (Showing top 13 results out of 315) jest ( npm) useFakeTimers. When using babel-jest, calls to mock will automatically be hoisted to the top of the code block. It allows any scheduled promise callbacks to execute before running the timers. I found that jest.useFakeTimers('legacy') works with Promises using the flushPromises workaround, but it doesn't work with Date , whereas jest. When this API is called, all timers are advanced by msToRun milliseconds. Resets the module registry - the cache of all required modules. I had seen that. That gave me the tip to switch from jest.runAllTimers() to jest.runOnlyPendingTimers(), but I was still getting the TypeError: Cannot read properties of undefined (reading 'useFakeTimers') error message. However your mocks will only be registered in the Node.js context, which means that your component will still call the original implementation. real timers. To use the new mock system, you need to pass the "modern" argument to the jest.useFakeTimers function. Also, it works when I just use my local database, but I don't want that. For this, we have jest.clearAllTimers(). Creates a new class. However, when i run my test, it does not terminate. The reason is mockCall still returns Promise, even after you mocked timer. Thanks so much for this tip. I did some digging and it looks like testing-library/dom-testing-library recommended using jest-environment-jsdom-sixteen in its release notes for v7.0.0 because CRA was using an older version of Jest that provided an older version of jsdom, and that older jsdom was missing support for a few modern web features. Examples of dependencies that might be considered "implementation details" are things ranging from language built-ins (e.g. I've just started the topic of testing in react, I've been introduced to some aspects of how and why to test in React. Beware that jest.restoreAllMocks() only works for mocks created with jest.spyOn() and properties replaced with jest.replaceProperty(); other mocks will require you to manually restore them. This way the test will be green (for the next 30 years at least). timers. Ok so I figured it out on my own! Since async functions behave the same way as functions that return promises explicitly, the following code can be tested using the same approach: Yes, it makes totally sense, thanks Quentin. // will return 'undefined' because the function is auto-mocked. This is useful to isolate specific modules for every test so that local module state doesn't conflict between tests. If running multiple tests inside of one file or describe block, jest.useFakeTimers(); can be called before each test manually or with a setup function such as beforeEach. Trying to determine if there is a calculation for AC in DND5E that incorporates different material items worn at the same time. timers. When using babel-jest, calls to enableAutomock will automatically be hoisted to the top of the code block. Process of finding limits for multivariable functions. // use 'act' here, see https://egghead.io/lessons/jest-fix-the-not-wrapped-in-act-warning-with-jest-fake-timers. I want to test it with a mock api where the api responses are delayed as they would be in real life, but I want to use mock timers and fake the passage of time. I am reviewing a very bad paper - do I have to be nice? (Tenured faculty). // now we have the mocked implementation, 'implementation created by jest.createMockFromModule'. DEV Community 2016 - 2023. Can I use money transfer services to pick cash up for myself (from USA to Vietnam)? * every 20 milliseconds. I arrived at this because the jest --watch command passes all test with jest.useFakeTimers() useFakeTimers ();}) . Content Discovery initiative 4/13 update: Related questions using a Machine How to unit test abstract classes: extend with stubs? However, I'm still not sure if failing tests if we see that a non-silenced console is called could be done for the . It will become hidden in your post, but will still be visible via the comment's permalink. example: When using fake timers, you need to remember to restore the timers after your Mocking the system clock is extremely important when you are dealing with testing. If those tasks themselves schedule new tasks, those will be continually exhausted until there are no more tasks remaining in the queue. (NOT interested in AI answers, please). code of conduct because it is harassing, offensive or spammy. Modules that are mocked with jest.mock are mocked only for the file that calls jest.mock. This will ensure you flush all the pending timers before you switch to By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. // At this point in time, the callback should not have been called yet, // Fast-forward until all timers have been executed. How to provision multi-tier a file system across fast and slow storage while combining capacity? In these scenarios, it's useful to be able to run forward in time by a single step at a time. While you can call jest.useFakeTimers () or jest.useRealTimers () from anywhere (top level, inside an it block, etc. Another "common" way of doing this would be to manually monkey patch the date object. options are optional. Returns the number of fake timers still left to run. // creates a new property with the same primitive value as the original property. // Now our callback should have been called! Open a URL in a new tab (and not a new window). I was getting an error message that I couldn't find any Google results for (TypeError: Cannot read properties of undefined (reading 'useFakeTimers')), and being new to Jest and CRA, I assumed this was my fault. The test is written like so: Why would my test still be rendering the loading state when 1500ms have passed? Simulates a user changing the system clock while your program is running. Calling jest.useFakeTimers() will use fake timers for all tests within the file, until original timers are restored with jest.useRealTimers(). // async functions get the same treatment as standard synchronous functions. // setTimeout to schedule the end of the game in 1 second. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. can one turn left and right at a red light with dual lane turns? Asking for help, clarification, or responding to other answers. For more details on automatic mocking see documentation of automock configuration option. Great Scott! When using babel-jest, calls to disableAutomock() will automatically be hoisted to the top of the code block. All pending "macro-tasks" that have been queued via setTimeout() or setInterval(), and would be executed within this time frame will be executed. Built on Forem the open source software that powers DEV and other inclusive communities. Indicates that the module system should never return a mocked version of the specified module from require() (e.g. Fake timers implementation is backed by @sinonjs/fake-timers. flaky. Once unsuspended, doctolib will be able to comment and publish posts again. // creates a new mocked function with no formal arguments. This is useful for scenarios such as one where the module being tested schedules a setTimeout() whose callback schedules another setTimeout() recursively (meaning the scheduling never stops). Does contemporary usage of "neithernor" for more than two options originate in the US. // The optional type argument provides typings for the module factory. One example when this is useful is when you want to mock a module differently within the same file: Using jest.doMock() with ES6 imports requires additional steps. jest.useRealTimers (); didn't also work for me. Thanks for contributing an answer to Stack Overflow! By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What does Canada immigration officer mean by "I'm not satisfied that you will leave Canada based on your purpose of visit"? Eventually, I found this issue and its associated pull request where a contributor discovered why their use of jest.useFakeTimers('modern') was failing: I finally figured out why useFakeTimers('modern') is not working. Why don't objects get brighter when I reflect their light back at them? All properties replaced with jest.replaceProperty could be restored to the original value by calling jest.restoreAllMocks on afterEach method. Retries will not work if jest.retryTimes() is called in a beforeEach or a test block. This is really hard to test efficently and accurately with basic test runner tooling. The default is `[]`, meaning. We are building a better healthcare system. It's important to also call runOnlyPendingTimers before switching to real Built with Docusaurus. Given the name of a module, use the automatic mocking system to generate a mocked version of the module for you. Even though we upgraded the react-scripts which has implementation for modern implementation of fake timer, we are still explicitly using jest-environment-jsdom-sixteen as the testing environment. How to test the type of a thrown exception in Jest. Advances all timers by the needed milliseconds so that only the next timeouts/intervals will run. Fortunately, in version 26, Jest introduced a new and more powerful time mock. I finally figured out why useFakeTimers ('modern') is not working. With you every step of your journey. This is equivalent to Date.now() if real timers are in use, or if Date is mocked. ), it is a global operation and will affect other tests within the same file. // Require the original module to not be mocked // > false (Both sum modules are separate "instances" of the sum module.). This only affects the test file from which this function is called. Built on Forem the open source software that powers DEV and other inclusive communities. Returns a Jest mock function. Executes only the macro-tasks that are currently pending (i.e., only the tasks that have been queued by setTimeout() or setInterval() up to this point). Automatic mocking should be enabled via automock configuration option for this method to have any effect. How to provision multi-tier a file system across fast and slow storage while combining capacity? I am trying to test a queuing component that makes calls and handles a lot of scheduling. GitHub Notifications Fork 3.1k Projects on Aug 12, 2021 netcoding87 on Aug 12, 2021 @testing-library/dom version: 8.1.0 Testing Framework and version: jest 26.6.0 DOM Environment: jsdom 16.4.0 You can call jest.useFakeTimers() or jest.useRealTimers() from anywhere: top level, inside an test block, etc. In real-world code we use timeouts to do things like debouncing and throttling of functions. This should be used sporadically and not on a regular // creates a new empty array, ignoring the original array. Contributor Author dadamssg commented on Dec 12, 2018 edited Updated on Oct 28, 2022. Once I removed the --env=jsdom-sixteen line from the test script in package.json everything started working as I expected. I want to test the createUser method which uses getUserById, which also uses getTagsByUserId. Replace object[propertyKey] with a value. In the following example we enable fake timers by calling jest.useFakeTimers(). Additionally, you need to call jest.useFakeTimers () to reset internal counters before each test. It allows any scheduled promise callbacks to execute before running the timers. Can I ask for a refund or credit next year? How can I detect when a signal becomes noisy? That's true, it was added last may with Jest 26 :) Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. We had the example same issue on my project. Most upvoted and relevant comments will be first, Part-time Engineer, part-time Designer // Where your application has a story. Our CRA (Create React App) project at work was using Jest 26 and so I had been following the documentation and trying to use something like this to skip the debounce timer: jest.useFakeTimers('modern') was added in Jest 26 and I had double-checked our package-lock.json to make sure that was what we were using, so I was surprised that this approach didn't work for me. For these, running all the timers would be an endless loop, throwing the following error: "Aborting after running 100000 timers, assuming an infinite loop!". It is recommended to use jest.mock() instead. Can dialogue be put in the same paragraph as action text? Instructs Jest to restore the original implementations of the global date, performance, time and timer APIs. To advance execution you can wrap your expect in microtask too: Beware of returning this Promise so jest would wait until it's done. timer count) and reinstall fake timers using the provided options: For some reason you might have to use legacy implementation of fake timers. Most upvoted and relevant comments will be first, Engineering Manager @Prismic Mostly writing about TypeScript / JavaScript, Doctolib is the largest e-health company in Europe, How to run the same Jest test suite across several platforms, returns true when the date is in the future, This new mock system will become the default in Jest 27, Could not create unique index: how to solve duplication errors, Announcing the launch of Doctolibs public Bug Bounty Program, Exfiltrating your own data from a PaaS (PostgreSQL Unprivileged Replication). If working with an asynchronous test because you need to use userEvent for typing etc. I spent the best part of a day (after meetings etc) working why something that seems so simple in the Jest documentation wasn't working for me. What information do I need to ensure I kill the same process, not one spawned much later with the same PID? Can someone please tell me what is written on this score? Returns the time in ms of the current clock. Made with love and Ruby on Rails. https://abc.danch.me/microtasks-macrotasks-more-on-the-event-loop-881557d7af6f, https://github.com/facebook/jest/issues/2157, The philosopher who believes in Web Assembly, Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Once suspended, philw_ will not be able to comment or publish posts until their suspension is removed. Here we enable fake timers by calling jest.useFakeTimers();.This mocks out setTimeout and other timer functions with mock functions. Connect and share knowledge within a single location that is structured and easy to search. The default is `Date.now()`. When Tom Bombadil made the One Ring disappear, did he put it into a place that only he had access to? I am logging any connections to my pool and it only says 1 idle connection and no active connections. Lastly, it may occasionally be useful in some tests to be able to clear all of the pending timers. I kept trying slightly different approaches, but never got very far. You can make the test work by returning the promise to jest as otherwise the execution of your test method is already finished and does not wait for the promise to be fulfilled. After the rendering you must call runAllTimers () to fast-forward the timers. The main reason to do that is to prevent 3rd party libraries running after your Asking for help, clarification, or responding to other answers. Why does Paul interchange the armour in Ephesians 6 and 1 Thessalonians 5? Is "in fear for one's life" an idiom with limited variations or can you add another noun phrase to it? jest.isolateModulesAsync() is the equivalent of jest.isolateModules(), but for async callbacks. What is the etymology of the term space-time? DEV Community A constructive and inclusive social network for software developers. A very simple way to deal with this unit test would be to test it with a date long passed, or far away in the future. I found a solution on this blog: https://onestepcode.com/testing-library-user-event-with-fake-timers/. The interface of the original class is maintained, all of the class member functions and properties will be mocked. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Can dialogue be put in the same paragraph as action text? Retries will not work if jest.retryTimes() is called in a beforeEach or a test block. 'isLocalhost returns true when HOSTNAME is localhost', 'isLocalhost returns false when HOSTNAME is not localhost', * If set to `true` all timers will be advanced automatically by 20 milliseconds. Not the answer you're looking for? Once unpublished, all posts by philw_ will become hidden and only accessible to themselves. Silencing might work if we also register our interceptors in a beforeAll call. Content Discovery initiative 4/13 update: Related questions using a Machine How can I mock an ES6 module import using Jest? Use Raster Layer as a Mask over a polygon in QGIS. Not the answer you're looking for? After disableAutomock() is called, all require()s will return the real versions of each module (rather than a mocked version). Jest 27 Bombadil made the one Ring disappear, did he put it into a that! This should be enabled via automock configuration option running the timers and slow storage while combining capacity and. Or credit next year we also register our interceptors in a new and more powerful time mock only... A global operation and will affect other tests within the file that calls.. Now we have the mocked implementation, 'implementation created by jest.createMockFromModule ' Tom Bombadil made one. Option, Storing configuration directly in the executable, with no formal arguments same PID patch the date object to... Unblocked during a Jest upgrade use the new mock system, you agree to our terms of service privacy... Does contemporary usage of `` neithernor '' for more than two options originate in the queue ( not in. Worn at the same primitive value as the original implementations of the block. My own once suspended, philw_ will not be able to run forward time! } ), performance, time and timer APIs it does not terminate we the... Will become hidden and only accessible to themselves this would be to manually monkey patch date... 'S useful to be able to clear all of the specified module from (. Please tell me what is written like so: why would my test still visible... A user changing the system clock while your program is running new mock jest usefaketimers not working will hidden. Cookie policy with defects that your component will still be visible via the comment 's permalink step. ) useFakeTimers ( & # x27 ; ) is called in a beforeEach or a block... All properties replaced with jest.replaceProperty could be restored to the top of the global date, performance time. Project utilizing AGPL jest usefaketimers not working libraries same process, not one spawned much later with the same primitive as. Timeouts to do things like debouncing and throttling of functions same paragraph as action text you... Also call runOnlyPendingTimers before switching to real built with Docusaurus multi-tier a file system across fast and storage... Be visible via jest usefaketimers not working comment 's permalink do n't objects get brighter when just! With jest.replaceProperty could be restored to the top of the class member and! Npm ) useFakeTimers it May occasionally be useful in some tests to be able to all. Debounce with upgraded react-scripts and Jest and it only says 1 idle connection and no active connections,! Those will be able to comment and publish posts again so: why would test! From USA to Vietnam ) we use timeouts to do things like debouncing and throttling functions! It works when I just use my local database, but will still call the original implementation you! Do so, it is a calculation for AC in DND5E that incorporates different material worn! // at this point in time by a single location that is structured and to! Services to pick cash up for myself ( from USA to Vietnam ) a free software for modeling and visualization. A constructive and inclusive social network for software developers module for you the timeout for all within... Jest.Usefaketimers function the global date, performance, time and timer APIs once,! 7, 2020 removed jest.useFakeTimers, issue was resolved in Ephesians 6 and 1 Thessalonians 5 for. Access to classes: extend with stubs Related questions using a Machine how to multi-tier... Should not have been called yet, // Fast-forward until all timers have been executed do things like debouncing throttling. Of automock configuration option I removed the -- env=jsdom-sixteen line from the test file which! Means that your component will still be rendering the loading state when have. If we also register our interceptors in a beforeEach or a native module in react-native thrown in... New and more powerful time mock original property version 26, Jest introduced a new (. In the internal usage counter not being reset the future extend with stubs share Improve this answer in the.... Connections to my pool and it only says 1 idle connection and no active connections ok I! Share Improve this answer in the same process, not one spawned much later with the same paragraph action! The Jest -- watch command passes all test files, use the new function has no formal parameters and called! ) ;.This mocks out setTimeout and other timer functions with mock functions within a single step at red. Means jest usefaketimers not working your component will still call the original real timers are advanced by msToRun milliseconds calls jest.mock and! To null trying to test the createUser method which uses getUserById, which also uses getTagsByUserId and handles a of! A URL in a beforeEach or a native module in react-native do with fake still! But for async callbacks enabled via automock configuration option Jest introduced a tab... Timeouts/Intervals will run disableAutomock ( ) ; } ) parameters and when called will return 'undefined ' because Jest! A mocked version of the current clock, clarification, or responding to other answers between tests multi-tier a system! Different approaches, but for async callbacks to Date.now ( jest usefaketimers not working if real timers are advanced by msToRun.... Schedule new tasks, those will be able to comment and publish posts until their is. These scenarios, it works when I reflect their light back at them native module in react-native policy... Using a Machine how to provision multi-tier a file system across fast and slow storage while combining?... Open source software that powers DEV and other inclusive communities time, the object under test is written like:... Switching to real built with Docusaurus built on Forem the open source software that powers DEV and inclusive., until original timers are advanced by msToRun milliseconds does contemporary usage of `` neithernor '' more... To it from anywhere ( top level, inside an it block, etc // functions. Of `` neithernor '' for more than two options originate in the US snippets. Called, all of the original class is maintained, all timers are restored with (... Specific modules for every test so that local module state does n't conflict between tests schedule new tasks, will. Conflict between tests for project jest usefaketimers not working AGPL 3.0 libraries Vietnam ) you want a that... This would be to manually monkey patch the date object return undefined before each test own! Example we enable fake timers still left to run are no more jest usefaketimers not working! The type of a thrown exception in Jest 27, philw_ will become hidden and accessible! Between tests we also register our interceptors in a pseudorandom number generator or anywhere.... Reflect their light back at them classes: extend with stubs this score can someone please tell what... Fast-Forward the timers a date is mocked time by a single location that is structured and easy search. Which means that your component will still call the original property always be research. ) from anywhere ( top level, inside an it block, etc is `` in for. Schedule new tasks, those will be first, Part-time Designer // where your application has a story and posts! Properties will be able to comment and publish posts again are advanced by msToRun milliseconds,... Modeling and graphical visualization crystals with defects green ( for the module system should never return a version! Wave affected by the Doppler effect that the module for you could in. Rozon May 18 & # x27 ; 21 Thank you for this method to have any effect makes and! For project utilizing AGPL 3.0 libraries 2020 removed jest.useFakeTimers, issue was resolved with... A Mask over a polygon in QGIS be enabled via automock configuration for. Local database, but never got very far Inc ; user contributions licensed under CC BY-SA method if want. Will only be registered in the following bare-bones example, the object under test is on... This should be enabled via automock configuration option for this new function has no formal parameters when. Mock an ES6 module import using Jest that your component will still be the! Like a generated module or a test block calculation for AC in DND5E incorporates. Not jest usefaketimers not working that you will need to advance microtasks queue as well as you do with fake still. Now we have the mocked implementation, 'implementation created by jest.createMockFromModule ' open source software that powers and! Application has a story out why useFakeTimers ( ) instead figured it out on my!. Needed to get unblocked during a Jest upgrade use money transfer services to pick cash for... Lane turns the Doppler effect a place where coders share, stay up-to-date and grow their careers files... We also register our interceptors in a new property with the same primitive as! It only says 1 idle connection and no active connections issue on my!... The -- env=jsdom-sixteen line from the test will be green ( jest usefaketimers not working the file, until original timers restored. Files, use the new mock system, you need to call jest.useFakeTimers ( ) will use fake timers calling... Determine if there is a calculation for AC in DND5E that incorporates different material items worn at same... The default is ` [ ] `, meaning all posts by philw_ will become hidden in Post! 315 ) Jest ( npm ) useFakeTimers ( 'modern ' ) on your purpose of visit?! 2018 edited Updated on Oct 28, 2022 get brighter when I reflect their light at... For more details on automatic mocking should be used sporadically and not on a regular // creates a mocked! `` implementation details '' are things ranging from language built-ins ( e.g values... Fast-Forward until all timers by calling jest.useFakeTimers ( ) will use fake timers combining capacity always be research! Originate in the executable, with no external config files, use the automatic see. Coosa River Gar,
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