Runtime TypeScript interfaces type checking in tests

[davidrapin]

Possible solutions: http://angular.github.io/assert/

Interesting discussion about dynamic type checking is TS: https://typescript.codeplex.com/discussions/401501

A possible implementation of an interface checker in TS: (scroll down to CheckInterface): https://blorkfish.wordpress.com/2012/10/17/typescript-implementing-a-simple-ioc-container-for-service-location/

[davidrapin]

Actually, this seems our best option:

1. let TS compiler generate reflection decoration (Emit serialized design-time type metadata for decorators microsoft/TypeScript#2577 using "emitDecoratorMetadata"
2. use the generated  __metadata fields to read type information at runtime.