fix(ci): install networkx in test images

[bzsuni]

Overview:

Add networkx to container/deps/requirements.test.txt.

benchmarks/router/tests/test_common.py imports benchmarks.router.common, which eventually imports networkx. Pytest collects the test tree before marker filtering, so when networkx is missing, collection fails before the Triton and Planner CPU test selections can run.

This is the collection failure that became visible after #14760 fixed the PR workflow startup failure.

Details:

container/Dockerfile.test installs the shared test requirements used by these CPU test images. Adding networkx there keeps the router benchmark module collectable without changing production runtime dependencies.

#14671 takes a different approach by skipping this benchmark module when networkx is unavailable. This PR installs the test dependency instead.

Validation:

• Router benchmark unit tests: 3 passed with networkx 3.6.1.
• Fresh CI will validate Triton and Planner CPU collection.

Where should the reviewer start?

container/deps/requirements.test.txt

Related Issues

🚫 This PR is NOT linked to an issue:

• Confirmed — no related issue

Summary by CodeRabbit

• Tests
  • Added the networkx package as a test dependency for router benchmark coverage.

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[github-actions]

👋 Hi bzsuni! Thank you for contributing to ai-dynamo/dynamo.

Just a reminder: The NVIDIA Test Github Validation CI runs an essential subset of the testing framework to quickly catch errors.Your PR reviewers may elect to test the changes comprehensively before approving your changes.

🚀

[nnshah1]

Approving — correct, minimal fix. This resolves the networkx collection error that fails every CPU test job: benchmarks/router/tests/test_common.py transitively imports networkx via benchmarks.router.common → prefix_data_generator.synthesizer, and it wasn't installed in the test image. Verified the whole chain against current main.

This unblocks the repo-wide CI failures alongside #14760 (the framework startup fix).

Nit (non-blocking): most neighbors in this file pin exact versions (nats-py==2.12.0, etc.); consider pinning networkx==X.Y.Z for reproducibility. Fine to land as-is given it's an urgent unblock.

The one red check here is lychee (Docs-link-check), which is a separate known-broken job unrelated to this change.

— Neelay + 🤖

[coderabbitai]

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• container/deps/requirements.test.txt

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Walkthrough

The test-only requirements add the unpinned networkx dependency for router benchmark tests that synthesize import graphs during whole-tree collection.

Changes

Router benchmark test dependency

Layer / File(s)	Summary
Test dependency declaration container/deps/requirements.test.txt	Adds unpinned networkx to the test-only dependency list.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to fb5b1

This test-only dependency enables router benchmark collection without changing production runtime dependencies; no concrete merge-blocking risk is evidenced.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description explains the change, technical cause, affected test images, validation results, reviewer starting point, and confirms that no related issue exists. It satisfies the required template s…
Title check	✅ Passed	The title clearly and concisely describes the main change: installing networkx in test images through the test dependency requirements.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

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[biswapanda]

lgtm. Thanks for fixing this issue.

[biswapanda]

/ok to test fb5b1d9

[furionw]

/ok to test 5b37619