Unable to find unit/component test samples for relay-react components

We are trying to write the Unit and Component tests for our react relay components which has fragments and query renderers.
I am referring testing-relay-components link provided below.
https://relay.dev/docs/en/testing-relay-components

The documentation seems incomplete. There are many small items which this page does not explain well and to make things worse, I am not able to find single example on internet where this pattern has been implemented well.

So could you please share any working samples of this guide.
https://relay.dev/docs/en/testing-relay-components

**Questions:**

1) **@relay_test_operation** - Where is this located ? I included this in my query, by relay method can not identify this as valid thing

2) **Fragment container Tests -**
https://relay.dev/docs/en/testing-relay-components#fragment-container-tests

Please share the sample component used here, its not clear how to write the test query renderer which matches your component. I tried to write a query, but somehow my props are always empty. Its not populating any data.

3) **MockPayloadGenerator.generate ->** I cant see the generated data landing under props. I tried adding custom generators too, but still my 'props' always show empty data. No Mock data populated.

I am using TypeScript,babel-plugin-macros for graphql.