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According to the docs one can increase the default async timeout from 5000ms using the jest-object
More specifically, by using the jestsettimeouttimeout
The issue I am facing is I am running a series of tests against an API that is very slow, 5-15 second response times, configuring this jest object at the top of each test is painfully annoying.
Is it possible to declare these settings once before all test files are run?
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To set a global timeout different than Jest's default, one must use a setupTestFrameworkScriptFile config and create a new file. This is a bit cumbersome, isn't it? It would also play nice with the API we have for already: jest. setTimeout(number) .
Jest provides beforeAll and afterAll . As with test / it it will wait for a promise to resolve, if the function returns a promise. beforeAll(() => { return new Promise(resolve => { // Asynchronous task // ...
The native timer functions (i.e., setTimeout() , setInterval() , clearTimeout() , clearInterval() ) are less than ideal for a testing environment since they depend on real time to elapse. Jest can swap out timers with functions that allow you to control the passage of time.
Note: The default timeout is 5 seconds. Note: If a promise is returned from test , Jest will wait for the promise to resolve before letting the test complete. Jest will also wait if you provide an argument to the test function, usually called done . This could be handy when you want to test callbacks.
OK, putting bits together:
The Jest search box doesn't actually return anything when you search for: setupFilesAfterEnv
And docs talk about: setupTestFrameworkScriptFile (which also doesn't return anything on the search:/ )
Anyway, the docs leave you scratching your head but this works:
jest.config.js:
module.exports = {
setupFilesAfterEnv: ['./setup.js'],
setup.js:
jest.setTimeout(10000); // in milliseconds
The jest folks should make it easier to find this information.
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