test: cover boundary link preservation on subgraph creation - #15064
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The only e2e coverage of Convert to Subgraph selects every node in the workflow, so no boundary link exists and the rewiring code in _convertToSubgraphImpl is never exercised. Partial selection - the operation users actually perform - has no coverage at all. Packs KSampler + VAE Decode out of the default workflow, leaving five boundary input links from four distinct source outputs and one boundary output link, and asserts each one lands on a type-compatible slot on the new subgraph node and survives a serialize/reload round trip.
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📝 WalkthroughWalkthroughAdds Playwright coverage for subgraph boundary-link creation. The test validates link mappings, input-slot compatibility, and persistence after serialization and reload. ChangesSubgraph Boundary Links
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The PR adds browser-test coverage and helper logic; a localized edge-case guard remains for accurate node targeting when a title is outside the left canvas edge. It is mergeable with owner awareness and follow-up, and no actionable merge-blocking risk remains. 🚥 Pre-merge checks | ✅ 7✅ Passed checks (7 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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🎭 Playwright: ✅ 1827 passed, 0 failed · 4 flaky📊 Browser Reports
📦 Bundle: 9.12 MB gzip ⚪ 0 BDetailsSummary
Category Glance App Entry Points — 3.71 kB (baseline 3.71 kB) • ⚪ 0 BMain entry bundles and manifests Status: 1 unchanged Graph Workspace — 1.37 MB (baseline 1.37 MB) • ⚪ 0 BGraph editor runtime, canvas, workflow orchestration Status: 3 unchanged Views & Navigation — 124 kB (baseline 124 kB) • ⚪ 0 BTop-level views, pages, and routed surfaces Status: 17 unchanged Panels & Settings — 566 kB (baseline 566 kB) • ⚪ 0 BConfiguration panels, inspectors, and settings screens Status: 26 unchanged User & Accounts — 27.5 kB (baseline 27.5 kB) • ⚪ 0 BAuthentication, profile, and account management bundles Status: 11 unchanged Editors & Dialogs — 125 kB (baseline 125 kB) • ⚪ 0 BModals, dialogs, drawers, and in-app editors Status: 8 unchanged UI Components — 67.1 kB (baseline 67.1 kB) • ⚪ 0 BReusable component library chunks Status: 14 unchanged Data & Services — 3.53 MB (baseline 3.53 MB) • ⚪ 0 BStores, services, APIs, and repositories Status: 17 unchanged Utilities & Hooks — 549 kB (baseline 549 kB) • ⚪ 0 BHelpers, composables, and utility bundles Status: 37 unchanged Vendor & Third-Party — 18.1 MB (baseline 18.1 MB) • ⚪ 0 BExternal libraries and shared vendor chunks Status: 18 unchanged Other — 14.2 MB (baseline 14.2 MB) • ⚪ 0 BBundles that do not match a named category Status: 287 unchanged ⚡ Performance Report
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Codecov Report✅ All modified and coverable lines are covered by tests. @@ Coverage Diff @@
## main #15064 +/- ##
==========================================
+ Coverage 79.13% 81.12% +1.98%
==========================================
Files 2213 1886 -327
Lines 112671 108825 -3846
Branches 34726 33548 -1178
==========================================
- Hits 89162 88283 -879
+ Misses 23034 20167 -2867
+ Partials 475 375 -100
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|
CI shows this failing on main: the subgraph node gets its five input slots and one output slot, but the VAE boundary input (4:2) and the SaveImage boundary output are both left unwired while all four KSampler boundary inputs survive, and nine links remain in the root graph instead of six. Emit the node list, link table and host slot table so the assertion diff explains which links were dropped.
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Actionable comments posted: 2
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Verify each finding against current code. Fix only still-valid issues, skip the
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Inline comments:
In `@browser_tests/tests/subgraph/subgraphCreationBoundaryLinks.spec.ts`:
- Around line 118-123: Strengthen the subgraph creation assertions before the
loadGraph call: validate the required boundary sources, expected VAE Decode
input count, and host-to-SaveImage connection before assigning beforeReload.
Then retain the serialisedLinks comparison after reload so it compares against
this validated rewiring state.
- Around line 67-78: Fix the boundary-link mapping and reconnection flow used by
_convertToSubgraphImpl so VAE Decode boundary inputs and SaveImage boundary
outputs remain wired after conversion and merging. Preserve the existing
expected counts, source list, saveImageFedByHost value, and diagnostic
assertions in the test.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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📒 Files selected for processing (1)
browser_tests/tests/subgraph/subgraphCreationBoundaryLinks.spec.ts
added 3 commits
August 11, 2026 17:04
This reverts commit 4e821e2.
The previous expectation was wrong: it asserted six root links after packing KSampler + VAE Decode, forgetting the two CheckpointLoaderSimple CLIP links that lie entirely outside the selection and correctly survive. The real count is eight. Assert the full link table with the subgraph node rendered as HOST instead of counting, so the expectation states the intended topology and a failure names the links that moved.
VAE Decode sits past the right edge of the 1280px canvas at the default view, so its title click missed and the selection held KSampler alone. The conversion under assertion was therefore a one-node conversion, and its correct output read as four separate boundary-link defects. Fit the view first, assert the selection, and assert the exact link topology on both sides of the reload rather than comparing the reloaded graph against whatever conversion happened to produce.
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In `@browser_tests/tests/subgraph/subgraphCreationBoundaryLinks.spec.ts`:
- Around line 39-43: Update selectedNodeIds to use the declared Positionable.id
property directly, replacing the cast-based optional-id access with
String(item.id) while preserving the existing mapping and sorting behavior.
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In `@browser_tests/tests/subgraph/subgraphCreationBoundaryLinks.spec.ts`:
- Around line 99-108: Extend the link-validation chain to also check boundary
output links originating from host: when link.origin_id equals host.id, compare
host.outputs[link.origin_slot]?.type with link.type and report mismatches using
the existing error-message flow, while preserving the current target-slot
validation.
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DrJKL
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Aug 18, 2026
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In `@browser_tests/fixtures/utils/litegraphUtils.ts`:
- Around line 364-369: Update the settledInView condition in getTitlePosition
polling to require x to be both at least 0 and less than canvas.width, while
preserving the existing previousX equality check.
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AustinMroz
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This fixture is pretty clunky. It's sole caller is a @vue-nodes test, but instead of leveraging this
await expect(node.header).toBeInViewport({ ratio: 1 })It's implemented as a slow .poll() over the position of the not actually rendered litegraph node.
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You were right, and it's done in 7a03b0c — the fixture is gone and the step now uses exactly what you suggested:
await comfyPage.command.executeCommand('Comfy.Canvas.FitView')
const vaeDecode = await comfyPage.vueNodes.getFixtureByTitle('VAE Decode')
await expect(vaeDecode.header).toBeInViewport({ ratio: 1 })litegraphUtils.ts is no longer touched at all; the diff is down to two files, +102/-0. Leaving this thread for you to resolve rather than closing it myself.
Re-assigning to you — your approval was auto-dismissed by the pushes that followed it, not withdrawn.
AustinMroz
previously approved these changes
Aug 19, 2026
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Adds e2e coverage for
Convert to Subgraphwith a partial selection.The gap
browser_tests/tests/subgraph/subgraphCrud.spec.ts:68is the only e2e test of subgraph creation. It callscomfyPage.keyboard.selectAll()first, so every node is inside the selection, there are zero boundary links, and the entire rewiring block in_convertToSubgraphImpl(src/lib/litegraph/src/LGraph.ts:1861-1939) never executes. It then asserts node counts, never link topology.Partial selection — what users actually do — had no e2e coverage at all. That block reconnects boundary links by positional index (
subgraphNode.inputs[i - 1],subgraphNode.outputs[i - 1]) against a slot array built independently inmapSubgraphInputsAndLinks, so a drift there is silent.What it does
Packs
KSampler+VAE Decodeout of the default workflow and asserts:HOST(five boundary inputs rewired onto it, one boundary output to SaveImage, and the twoCheckpointLoaderSimple → CLIPlinks that lie entirely outside the selection left untouched)Status — currently red, cause not yet established
Please do not read the red as a confirmed product bug yet; I do not want to overstate it.
The first run failed, but my expected link count was wrong (I asserted six root links and forgot the two external-only CLIP links; the correct total is eight). That error is fixed in
0566c82c5a, which now asserts the full topology rather than a count.What the first run reported that is not explained by my arithmetic error, and is still open:
4:2VAE boundary link was absent from the links targeting the hostAgainst that, a faithful unit-level reduction of the same graph shape (same node/slot/type layout, same selection) passes: all five host inputs connect, SaveImage is fed by the host, and the link count is eight. So either the trigger is something the reduction lacks (real node defs, widget-backed inputs, the app's
SubgraphNoderegistration path), or the browser selection was not the two nodes I assumed. The corrected assertion prints the actual table on failure, which should settle it on the next run.I have deliberately not written a fix. Test-only PR.
Related
_unpackSubgraphImpl).feature/ecs-migrationand changesrc/stores/linkStore.ts/rerouteStore.ts— files that do not exist onmain.