Files
hoppscotch/packages/dioc/lib/testing.ts
2023-06-07 15:20:49 +05:30

34 lines
831 B
TypeScript

import { Container, Service } from "./main";
/**
* A container that can be used for writing tests, contains additional methods
* for binding suitable for writing tests. (see `bindMock`).
*/
export class TestContainer extends Container {
/**
* Binds a mock service to the container.
*
* @param service
* @param mock
*/
public bindMock<
T extends typeof Service<any> & { ID: string },
U extends Partial<InstanceType<T>>
>(service: T, mock: U): U {
if (this.boundMap.has(service.ID)) {
throw new Error(`Service '${service.ID}' already bound to container. Did you already call bindMock on this ?`)
}
this.boundMap.set(service.ID, mock as any)
this.event$.next({
type: "SERVICE_BIND",
boundeeID: service.ID,
bounderID: undefined,
})
return mock
}
}