chore: separate unit and integration tests

[n1ru4l]

• Integration tests must be placed within __integration-tests__
• Run integration tests via yarn test:integration
• Use free ports so integration tests can be run in parallel
• All tests that don't require running as integration tests now use yoga.fetch
• Remove the repetitive "should" word from test names
• "unit" tests are now placed within __tests__ folders
• replace inconsistent .test.ts extensions with .spec.ts
• split tests into smaller files
• make all tests as contained as possible (so no context or file switching is required for understanding the test)

---

closes #1526

[changeset-bot]

🦋 Changeset detected

Latest commit: 1684b24

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 31 packages

Name	Type
graphql-yoga	Patch
@graphql-yoga/common	Patch
@graphql-yoga/node	Patch
apollo-federation-gateway-with-yoga	Patch
apollo-subgraph-with-yoga	Patch
example-azure-function	Patch
example-cloudflare-advanced	Patch
example-cloudflare-modules	Patch
example-defer-stream	Patch
example-error-handling	Patch
example-express	Patch
example-fastify-modules	Patch
example-fastify	Patch
example-file-upload-nextjs-pothos	Patch
example-file-upload-nexus	Patch
example-file-upload	Patch
example-generic-auth	Patch
example-graphql-config	Patch
example-hackernews	Patch
example-hello-world	Patch
example-koa	Patch
example-live-query	Patch
example-nextjs-auth	Patch
example-nextjs	Patch
example-node-esm	Patch
example-redis-pub-sub	Patch
example-service-worker	Patch
example-subscriptions	Patch
example-sveltekit	Patch
hello-world-benchmark	Patch
graphql-lambda	Patch

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[github-actions]

❌ Benchmark Failed

Failed assertions detected

If the performance regression is expected, please increase the failing threshold.

     ✗ no_errors
      ↳  0% — ✓ 0 / ✗ 47731
     ✗ expected_result
      ↳  0% — ✓ 0 / ✗ 47731

     checks.....................: 0.00%   ✓ 0           ✗ 95462
     data_received..............: 13 MB   417 kB/s
     data_sent..................: 5.5 MB  183 kB/s
     http_req_blocked...........: avg=1.89µs   min=1µs      med=1.5µs    max=963.26µs p(90)=2.4µs    p(95)=3.1µs   
     http_req_connecting........: avg=3ns      min=0s       med=0s       max=154.81µs p(90)=0s       p(95)=0s      
   ✓ http_req_duration..........: avg=513.71µs min=315.02µs med=417.22µs max=22.46ms  p(90)=605.04µs p(95)=802.6µs 
     http_req_failed............: 100.00% ✓ 47731       ✗ 0    
     http_req_receiving.........: avg=32.59µs  min=13.6µs   med=25.1µs   max=6.23ms   p(90)=41.1µs   p(95)=50.2µs  
     http_req_sending...........: avg=12.05µs  min=5.3µs    med=8.6µs    max=4.73ms   p(90)=15.3µs   p(95)=17.5µs  
     http_req_tls_handshaking...: avg=0s       min=0s       med=0s       max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...........: avg=469.05µs min=288.72µs med=378.52µs max=22.07ms  p(90)=551.63µs p(95)=733.95µs
     http_reqs..................: 47731   1590.915685/s
     iteration_duration.........: avg=621.3µs  min=377.92µs med=515.23µs max=22.8ms   p(90)=739.85µs p(95)=958.91µs
     iterations.................: 47731   1590.915685/s
     vus........................: 1       min=1         max=1  
     vus_max....................: 1       min=1         max=1  

[github-actions]

The latest changes of this PR are not available as canary, since there are no linked changesets for this PR.

[ardatan]

Looks way better!