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API > @angular/core > @angular/core/testing

inject

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

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

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

Notes:

  • inject is currently a function because of some Traceur limitation the syntax should eventually becomes it('...', @Inject (object: AClass, async: AsyncTestCompleter) => { ... });