dipperts/spec/ContainerCombinationSpec.ts

Dependency injection library for typescript.

import * as dipper from "../src";
import { ContainerBuilder, ResolvingContainer } from "../src";
import { IScopeProvider, IContainer } from "../src/IContainer";

interface ILogger {

}

interface ILoggerContainer {
    logger: ILogger;
}

interface IMyStore1 {
    logger: ILogger;
}

interface IMyContainer {
    store: IMyStore1;
}

type MyContainerType =  ResolvingContainer<IMyContainer> &
                        ResolvingContainer<ILoggerContainer> &
                        IScopeProvider<IContainer & ResolvingContainer<ILoggerContainer>>;

describe("When combining two containers", () => {
        var builder = new ContainerBuilder();

        let container: MyContainerType = builder.addIndependent<ILoggerContainer>(c => ({
                logger: c.single(() => ({}))
            }))
        .addDependent<IMyContainer>(c => ({
                store: c.single<IMyStore1>(() => ({ logger: c.logger() }))
            }))
        .create();

        var logger = container.logger();
        var store = container.store();

    it("all services are available on finished container", () => {
        expect(logger).toBeDefined();
        expect(store).toBeDefined();
    });

    it("dependencies are resolved accross container borders", () => {
        expect(store.logger).toBe(logger);        
    });
});