Add test to illustrate how to call actions locally

[PierreFritsch]

Add the code sample from the capire section Unbound Actions / Functions as a test in the code sample repository.

[PierreFritsch]

I'd need help on this one - my new test fails with:

TypeError: Cannot read property 'SELECT' of undefined

[PierreFritsch]

The test file consuming-services.test.js might be a good place to add this code sample, but it seems to be set up to serve only the AdminService which, in contrast with the CatalogService, doesn't have an action that can be called.

[chgeo]

Full error is

    TypeError: Cannot read property 'SELECT' of undefined

       6 |   }
       7 |
    >  8 |   if (query.SELECT) {
         |             ^
       9 |     return read(model, dbc, query, req)
      10 |   }
      11 |

      at SQLiteDatabase._run (../../cds/libx/_runtime/db/query/run.js:8:13)
      at SQLiteDatabase.call (../../cds/libx/_runtime/sqlite/Service.js:74:19)
      at next (../../cds/lib/serve/Service-dispatch.js:74:36)
      at SQLiteDatabase.handle (../../cds/lib/serve/Service-dispatch.js:72:16)

[chgeo]

Internal ticket is cap/issues#9798

[PierreFritsch]

Updated the code sample to reflect O.T.'s internal comment on October 4. What did I miss?

FAIL test/consuming-actions.test.js
  ● Consuming actions locally › calls unbound actions
      21 |
      22 |     // basic variant using srv.send
    > 23 |     const res1 = await cats.send("submitOrder", {
         |                             ^
      24 |       book: 111,
      25 |       quantity: 1,
      26 |     });

      at Request.reject (node_modules/@sap/cds/lib/req/request.js:65:39)
      at _reject (node_modules/@sap/cds/libx/_runtime/common/generic/auth.js:37:16)
      at CatalogService.handler (node_modules/@sap/cds/libx/_runtime/common/generic/auth.js:638:57)
      at CatalogService.handle (node_modules/@sap/cds/lib/serve/Service-dispatch.js:64:53)
      at CatalogService.handle (node_modules/@sap/cds/libx/_runtime/cds-services/services/Service.js:147:18)
      at CatalogService.dispatch (node_modules/@sap/cds/lib/serve/Service-dispatch.js:47:15)
      at CatalogService.dispatch (node_modules/@sap/cds/lib/serve/Service-dispatch.js:20:17)
      at CatalogService.send (node_modules/@sap/cds/lib/serve/Service-api.js:38:17)
      at Object.<anonymous> (test/consuming-actions.test.js:23:29)

[PierreFritsch]

looks like the action was rejected due to missing authorization.

@requires: 'authenticated-user'
action submitOrder ( book: Books:ID, quantity: Integer ) returns { stock: Integer };

you'll have to use a manual transaction to create a continuation with an authenticated-user.

(Thank you S.!)

[danjoa]

👍 Looks pretty good. Thanks Pierre!
Remark: another valid way to bypass access control in tests is this:

cds.User.default = cds.User.Privileged

e.g. also done here

[gregorwolf]

I like the approach providing the user explicitly as this will actually test the authorizations.

[PierreFritsch]

(Note: I currently don't have write access to this repository, so I cannot merge this PR myself.)