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inject

function

Allows injecting dependencies in beforeEach() and it().

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inject(tokens: any[], fn: Function): () => any

Parameters
tokens any[]
fn Function
Returns

() => any

Description

Example:

beforeEach(inject([Dependency, AClass], (dep, object) => {
  // some code that uses `dep` and `object`
  // ...
}));

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

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