Fragments error when using ApolloTestingModule

Hello,

I set up a testing suite with ApolloTestingModuleand it worked ok so far. Recently, I added a fragment to my query I got the next error and my test fails.

WARN: 'You're using fragments in your queries, but either don't have the addTypename:
  true option set in Apollo Client, or you are trying to write a fragment to the store without the __typename.
   Please turn on the addTypename option and include __typename when writing fragments so that Apollo Client
   can accurately match fragments.'
HeadlessChrome 67.0.3396 (Mac OS X 10.13.5): Executed 56 of 70 SUCCESS (0 secs / 1.117 secs)
WARN: 'Could not find __typename on Fragment ', 'RepairCase', Object{id: '1', categoryId: '10.10.10', createdAt: '2018-06-29T12:00:00Z', ...}
HeadlessChrome 67.0.3396 (Mac OS X 10.13.5): Executed 56 of 70 SUCCESS (0 secs / 1.117 secs)
WARN: 'DEPRECATION WARNING: using fragments without __typename is unsupported behavior and will be removed in future versions of Apollo client. You should fix this and set addTypename to true now.'
HeadlessChrome 67.0.3396 (Mac OS X 10.13.5): Executed 56 of 70 SUCCESS (0 secs / 1.117 secs)
ERROR: 'WARNING: heuristic fragment matching going on!'

It doesn’t depend on which query I use or which fragment I added. The test doesn’t do any fancy

      imports: [
        ApolloTestingModule
      ],
...
    backend = TestBed.get(ApolloTestingController);
...
    backend.expectOne('xxx').flush(TEST_RESPONSE);

I’m using apollo-angular@1.1.2

[adgoncal]

@kamilkisiela I thought the whole point was to not have to do that in tests. Also, if I add __typename I will not be able to use type check on const files: FileType[] = [ ... ] because __typename is not a property in FileType

[kamilkisiela]

@fetis @wszhi

#786 should allow to use custom cache

Here’s how you can solve the problem thanks to the PR: https://github.com/apollographql/apollo-angular/blob/ff3db3a0e6e68a2b0b0adfea57b3a03984b2058e/packages/apollo-angular/testing/tests/integration.spec.ts#L182-L230