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function

test.beforeAllfunction beforeAll(fn: () => void | Promiseunknown> | (done: (err?: unknown) => void) => void,options?: HookOptions): void;Runs a function, once, before all the tests.

This is useful for running set up tasks, like initializing a global variable or connecting to a database.

If this function throws, tests will not run in this file.

@param fnthe function to run

let database; beforeAll(async () => { database = await connect("localhost"); });

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