How to deal with Fragments?

Given I'm mocking a query like this:
```ts
const createTx: () => schema.Transaction = () => ({ value: 'txValue' })
mockRequestHandler.withResolvers({
Query: {
transactions: () => createTx()
}
})
```

Then I'm reusing the `createTx` in my tests like this:
```ts
render()
...userEvent, expect, etc
```

But there's an alias in my actual query:
```graphql
transactions {
...Tx
}

fragment Tx on Transaction {
value: myValue
}
```

So, while in the `` component, I'm not getting `myValue` since `createTx` returns an object with `value` instead.

I am using graphql-codegen, so I have `TxFragment` type available, but I don't see how I can convert the raw type (`schema.Transaction`) into the fragment. What's the recommended approach?

Here's my workaround:
```ts
const createTx: () => schema.Transaction & Pick = () => ({ value: 'txValue', myValue: 'txValue' })
```
Just hardcoding specific differences so that type casting works in both places. But it's a hack

Compare the generated TxFragment type with schema.Transaction and the fragment spread shown in the query. Review mockRequestHandler.withResolvers and the test setup; done means the repository has a clear, tested recommendation for creating reusable mocked data that works with both representations.

Written by the indexing model from the issue text.