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fix: correct BFS path-finding in Relation API and add integration tests#17

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observerw merged 3 commits intofeat/add-relation-apifrom
copilot/sub-pr-16
Jan 10, 2026
Merged

fix: correct BFS path-finding in Relation API and add integration tests#17
observerw merged 3 commits intofeat/add-relation-apifrom
copilot/sub-pr-16

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Copilot AI commented Jan 10, 2026

Addresses bugs in the Relation API BFS implementation that prevented discovering all paths between symbols and caused inefficient queue management.

Fixes

  • BFS path discovery bug: Target check now executes before marking nodes as visited. Previously, the first path to reach the target would mark it visited, blocking discovery of alternate paths.

    # Before: A → B → D and A → C → D would only find the first path
    # After: Both paths correctly discovered
  • BFS memory optimization: Nodes are checked for visited status before queue insertion, preventing redundant entries in graphs with high fan-out.

  • Documentation: Removed incorrect max_depth field from RelationResponse schema table (accessible via request.max_depth).

Tests

Added 7 integration tests with mock LSP client:

  • Multiple path discovery
  • Cycle detection
  • Max depth boundaries
  • No-path scenarios
  • Variable path lengths

All 19 tests pass; CodeQL reports 0 alerts.


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Copilot AI and others added 2 commits January 10, 2026 09:23
- Fix documentation: Remove incorrect max_depth field from RelationResponse
- Fix BFS bug: Move target check before visited.add() to find all paths
- Fix BFS optimization: Check visited before adding to queue

Co-authored-by: observerw <20661574+observerw@users.noreply.github.com>
- Add mock LSP client with call hierarchy and document symbol support
- Test single path discovery
- Test multiple paths between symbols
- Test scenario with no path
- Test max_depth boundary conditions
- Test cycle detection with recursive calls
- Test direct calls
- Test paths of different lengths

Co-authored-by: observerw <20661574+observerw@users.noreply.github.com>
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Copilot AI commented Jan 10, 2026

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

  • astral.sh
    • Triggering command: /usr/bin/curl curl -LsSf REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

Copilot AI changed the title [WIP] Add Relation API support to trace call paths fix: correct BFS path-finding in Relation API and add integration tests Jan 10, 2026
Copilot AI requested a review from observerw January 10, 2026 09:29
@observerw observerw marked this pull request as ready for review January 10, 2026 09:36
@observerw observerw merged commit 7310cef into feat/add-relation-api Jan 10, 2026
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2 participants