fix: Add unit tests for resolveSubgraphInputLink (#9293)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/core/graph/subgraph/resolveSubgraphInputLink.test.ts

@@ -121,6 +121,68 @@ describe('resolveSubgraphInputLink', () => {
     expect(result).toBe('seed_input')
   })
 
+  test('skips broken links where getLink returns undefined', () => {
+    const { subgraph, subgraphNode } = createSubgraphSetup('prompt')
+    addLinkedInteriorInput(subgraph, 'prompt', 'valid_input', 'valid')
+    const broken = addLinkedInteriorInput(
+      subgraph,
+      'prompt',
+      'broken_input',
+      'broken'
+    )
+
+    const originalGetLink = subgraph.getLink.bind(subgraph)
+    vi.spyOn(subgraph, 'getLink').mockImplementation((linkId) => {
+      if (typeof linkId !== 'number') return originalGetLink(linkId)
+      if (linkId === broken.linkId) return undefined
+      return originalGetLink(linkId)
+    })
+
+    const result = resolveSubgraphInputLink(
+      subgraphNode,
+      'prompt',
+      ({ targetInput }) => targetInput.name
+    )
+
+    expect(result).toBe('valid_input')
+  })
+
+  test('returns result from latest connection when multiple links resolve', () => {
+    const { subgraph, subgraphNode } = createSubgraphSetup('prompt')
+    addLinkedInteriorInput(subgraph, 'prompt', 'older_input', 'older')
+    addLinkedInteriorInput(subgraph, 'prompt', 'newer_input', 'newer')
+
+    const result = resolveSubgraphInputLink(
+      subgraphNode,
+      'prompt',
+      ({ targetInput }) => targetInput.name
+    )
+
+    expect(result).toBe('newer_input')
+  })
+
+  test('falls back to earlier link when latest resolve callback returns undefined', () => {
+    const { subgraph, subgraphNode } = createSubgraphSetup('prompt')
+    addLinkedInteriorInput(subgraph, 'prompt', 'fallback_input', 'fallback')
+    const newer = addLinkedInteriorInput(
+      subgraph,
+      'prompt',
+      'skipped_input',
+      'skipped'
+    )
+
+    const result = resolveSubgraphInputLink(
+      subgraphNode,
+      'prompt',
+      ({ targetInput }) => {
+        if (targetInput.link === newer.linkId) return undefined
+        return targetInput.name
+      }
+    )
+
+    expect(result).toBe('fallback_input')
+  })
+
   test('caches getTargetWidget result within the same callback evaluation', () => {
     const { subgraph, subgraphNode } = createSubgraphSetup('model')
     const linked = addLinkedInteriorInput(

src/locales/en/main.json

@@ -178,7 +178,7 @@
     "uploadAlreadyInProgress": "Upload already in progress",
     "capture": "capture",
     "nodes": "Nodes",
-    "nodesCount": "{count} nodes | {count} node | {count} nodes",
+    "nodesCount": "{count} node | {count} nodes",
     "addNode": "Add a node...",
     "filterBy": "Filter by:",
     "filterByType": "Filter by {type}...",
@@ -222,7 +222,7 @@
     "failed": "Failed",
     "cancelled": "Cancelled",
     "job": "Job",
-    "asset": "{count} assets | {count} asset | {count} assets",
+    "asset": "{count} asset | {count} assets",
     "untitled": "Untitled",
     "emDash": "—",
     "enabling": "Enabling {id}",
@@ -3347,7 +3347,7 @@
     }
   },
   "errorOverlay": {
-    "errorCount": "{count} ERRORS | {count} ERROR | {count} ERRORS",
+    "errorCount": "{count} ERROR | {count} ERRORS",
     "seeErrors": "See Errors"
   },
   "help": {
@@ -3357,7 +3357,7 @@
   "progressToast": {
     "importingModels": "Importing Models",
     "downloadingModel": "Downloading model...",
-    "downloadsFailed": "{count} downloads failed | {count} download failed | {count} downloads failed",
+    "downloadsFailed": "{count} download failed | {count} downloads failed",
     "allDownloadsCompleted": "All downloads completed",
     "noImportsInQueue": "No {filter} in queue",
     "failed": "Failed",
@@ -3374,7 +3374,7 @@
     "exportingAssets": "Exporting Assets",
     "preparingExport": "Preparing export...",
     "exportError": "Export failed",
-    "exportFailed": "{count} export failed | {count} export failed | {count} exports failed",
+    "exportFailed": "{count} export failed | {count} exports failed",
     "allExportsCompleted": "All exports completed",
     "noExportsInQueue": "No {filter} exports in queue",
     "exportStarted": "Preparing ZIP download...",