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async

function

Wraps a test function in an asynchronous test zone. The test will automatically complete when all asynchronous calls within this zone are done. Can be used to wrap an inject call.

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async(fn: Function): (done: any) => any

Parameters
fn Function
Returns

(done: any) => any

Description

Example:

it('...', async(inject([AClass], (object) => {
  object.doSomething.then(() => {
    expect(...);
  })
});

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https://angular.io/api/core/testing/async