Deprecate experimental testing utilities

[jerelmiller]

Closes #11929

Deprecates experimental testing utilities introduced in 3.10 in favor of graphql-testing-library.

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@apollo/client	Minor

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size-limit report 📦

Path	Size
dist/apollo-client.min.cjs	39.24 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	47.97 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	45.5 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js"	34.34 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js" (production)	32.2 KB (0%)
import { ApolloProvider } from "dist/react/index.js"	1.26 KB (0%)
import { ApolloProvider } from "dist/react/index.js" (production)	1.24 KB (0%)
import { useQuery } from "dist/react/index.js"	5.23 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.31 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	5.71 KB (0%)
import { useLazyQuery } from "dist/react/index.js" (production)	4.79 KB (0%)
import { useMutation } from "dist/react/index.js"	3.62 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.84 KB (0%)
import { useSubscription } from "dist/react/index.js"	4.41 KB (0%)
import { useSubscription } from "dist/react/index.js" (production)	3.46 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js"	5.49 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.15 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js"	4.99 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.64 KB (0%)
import { useLoadableQuery } from "dist/react/index.js"	5.07 KB (0%)
import { useLoadableQuery } from "dist/react/index.js" (production)	3.72 KB (0%)
import { useReadQuery } from "dist/react/index.js"	3.39 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	3.33 KB (0%)
import { useFragment } from "dist/react/index.js"	2.32 KB (0%)
import { useFragment } from "dist/react/index.js" (production)	2.27 KB (0%)

[jerelmiller]

@alessbell would love your thoughts here. Also, what would we like to do with the schema driven testing doc? Do we want to add a note to the top of that with a similar deprecation warning? Or should we rewrite that for 3.11 to switch over to graphql-testing-library?

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[alessbell]

Not sure if we want the repo name here or the npm package name which is @apollo/graphql-testing-library. I have a slight preference for the latter but either works :)

[jerelmiller]

Good callout! I agree, the package name seems more reasonable. I've updated it with 7b6c071. Thanks!

[alessbell]

Thanks so much for opening this! Left one minor comment but this LGTM 🚀