=== tests/cases/compiler/checkInfiniteExpansionTermination.ts ===
// Regression test for #1002
// Before fix this code would cause infinite loop

interface IObservable<T> {
>IObservable : IObservable<T>
>T : T

    n: IObservable<T[]>; // Needed, must be T[]
>n : IObservable<T[]>
>IObservable : IObservable<T>
>T : T
}

// Needed
interface ISubject<T> extends IObservable<T> { }
>ISubject : ISubject<T>
>T : T
>IObservable : IObservable<T>
>T : T

interface Foo { x }
>Foo : Foo
>x : any

interface Bar { y }
>Bar : Bar
>y : any

var values: IObservable<Foo>;
>values : IObservable<Foo>
>IObservable : IObservable<T>
>Foo : Foo

var values2: ISubject<Bar>;
>values2 : ISubject<Bar>
>ISubject : ISubject<T>
>Bar : Bar

values = values2;
>values = values2 : ISubject<Bar>
>values : IObservable<Foo>
>values2 : ISubject<Bar>