Propagate rejected promise from user function (#104)

Author: laurenzlong

spec/providers/database.spec.ts

@@ -56,11 +56,12 @@ describe('DatabaseBuilder', () => {
         expect(event.data.val()).to.deep.equal({foo: 'bar'});
       });
 
-      return handler({data:
-        {
+      return handler({
+        data: {
           data: null,
           delta: {foo: 'bar'},
         },
+        resource: 'projects/_/instances/subdomains/refs/users',
       } as any);
     });
 
@@ -74,7 +75,7 @@ describe('DatabaseBuilder', () => {
           data: null,
           delta: 'hello',
         },
-        resource: 'projects/_/instances/subdomains/refs/users/{id}',
+        resource: 'projects/_/instances/subdomain/refs/users/{id}',
         params: {
           id: 'aUserId',
         },

src/cloud-functions.ts

@@ -88,7 +88,7 @@ export function makeCloudFunction<EventData>({
       return result;
     }, err => {
       if (after) { after(event); };
-      return err;
+      return Promise.reject(err);
     });
   };
   cloudFunction.__trigger = {