When we can use beforeAll function in jasmine framework

Question

Hi Guys,

 

I am learning jasmine framework for unit test the angularjs application. I want to know the usage of the beforeAll function and which scenario we can use it.

 

It tried to use it for load module and inject the services. But it got reset at first test execution itself. It confusing me lot.

 

Can anyone explain it's usage with some scenario?