Function entityCacheMetaReducerFactory

modules/data/spec/entity-data.module.spec.ts:223–257

Create the test entityCacheMetaReducer, injected in tests

(
  collectionCreator: EntityCollectionCreator
)

/** Create the test entityCacheMetaReducer, injected in tests */
function entityCacheMetaReducerFactory(
  collectionCreator: EntityCollectionCreator
) {
  return (reducer: ActionReducer<EntityCache, Action>) => {
    return (state: EntityCache, action: { type: string; payload?: any }) => {
      switch (action.type) {
        case TEST_ACTION: {
          const mergeState = {
            Hero: createCollection<Hero>('Hero', action.payload['Hero'] || []),
            Villain: createCollection<Villain>(
              'Villain',
              action.payload['Villain'] || []
            ),
          };
          return { ...state, ...mergeState };
        }
      }
      return reducer(state, action);
    };
  };

  function createCollection<T extends { id: any }>(
    entityName: string,
    data: T[]
  ) {
    return {
      ...collectionCreator.create<T>(entityName),
      ids: data.map((e) => e.id),
      entities: data.reduce((acc, e) => {
        acc[e.id] = e;
        return acc;
      }, {} as any),
    } as EntityCollection<T>;
  }
}
// #endregion