test(integration): error contract tests for documented tool error paths - #460
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… paths 28 integration tests verifying every tool's documented Errors: section returns the correct error message over real HTTP transport. Covers: - Path traversal blocked (5 tools) - Hidden path blocked (3 tools) - Note not found (6 tools) - Note already exists (vault_write_note) - Heading not found / ambiguous (vault_read_note, vault_patch_note) - Text not found (vault_replace_in_note) - Anchor not found (vault_delete_span) - Memory errors (file not found, section not found, multi-line entry) - Task block_id not found (vault_update_task) - Path extension errors (missing .md / .canvas) Runs against a single default-config server boot (error contracts are config-independent). Adds one fixture file for ambiguous heading tests. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When to add integration tests, when to skip them, file structure conventions, and splitting thresholds — codified from the integration test architecture analysis so agents read them every session. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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umm-actually re-reviewed at 3 new finding(s) posted (13 tracked finding(s) across all runs). umm-actually · deepseek/deepseek-v4-flash-0731 |
…resholds tool-definitions.test.ts uses a mock server, not InMemoryTransport. Replace line/test-count splitting thresholds with concern-based guidance — split when the file has distinct concerns that don't share setup, not at arbitrary sizes. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
TextBlock, ToolResult, callTool, and textContent were defined identically in both server-integration.test.ts and server-error-contracts.test.ts. Move them to test-harness.ts where the rest of the shared integration infrastructure lives. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Scope AGENTS.md path rule to note paths; note backlinks' .canvas
Pre-existing: AGENTS.md's 'MCP path conventions' section states note-path tool inputs 'must end in .md' and lists 'path on backlinks/outgoing_links' under that rule, enforced via assertPathHasExtension(path, '.md'). This PR's own test name and PR description document that vault_get_backlinks accepts '.md or .canvas', so the doc's blanket claim is stale for backlinks. Failure scenario: A contributor following AGENTS.md 'corrects' vault_get_backlinks to reject .canvas as the documented rule prescribes; no test fails (the extension test uses an extensionless path), and backlink queries for canvas files break in production. Suggested fixScope the '.md' requirement to note-path tools and state the backlinks extension set explicitly ('.md or .canvas'), matching the tool's actual validation, or adjust the tool/tests if .canvas is not in the accepted set. |
Addresses umm-actually findings: - Error assertions now include test-controlled variable parts (paths, section names, anchors) instead of prefix-only substrings - AGENTS.md structure tree comment: "exact messages, remediation text" → "verified over real HTTP" (matches actual substring assertions) - AGENTS.md MCP path conventions: backlinks/outgoing_links accept .md or .canvas, not .md only — scoped correctly now Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Re: umm-actually — Scope AGENTS.md path rule to note paths; note backlinks' .canvas Fixed in 🔍 ship-check · pr-monitor · claude-opus-4-6[1m] |
Addresses umm-actually re-review: extension-rejection coverage expanded from 2 tools to 5 (added vault_write_note, vault_move_note, vault_get_outgoing_links). AGENTS.md wording corrected from "exact error message" to "distinctive message prefix" matching the toContain assertion pattern. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add missing error-contract tests so every note-path tool is covered: - Path traversal: +4 (replace, delete_span, update_properties, move new_path) - Hidden path: +6 (patch, replace, delete_span, update_properties, move old+new) Total error contract tests: 41 (was 31). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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✅ Action performedReview finished.
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📝 WalkthroughWalkthroughThe PR adds shared integration-test helpers, documents integration-test contracts, and adds HTTP coverage for documented validation errors across vault, memory, task, and link tools. ChangesIntegration error contract coverage
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🔵 Low · up to The PR adds integration error-contract coverage, but the shared test harness narrows tool results more than the SDK contract allows, which could weaken test reliability for non-text responses. The change is mergeable with explicit owner awareness and a follow-up to use the SDK result type directly. Possibly related PRs
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Actionable comments posted: 3
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Inline comments:
In `@src/__tests__/integration/server-error-contracts.test.ts`:
- Around line 482-501: The server error contract tests should cover
.md-extension validation for every documented note operation. Extend the
relevant test block with extensionless-path cases for vault_patch_note,
vault_replace_in_note, vault_delete_note, vault_delete_span,
vault_update_properties, vault_move_note.old_path, and retain the existing
write, read, and move new_path coverage; assert each operation returns the
expected path-extension error.
- Around line 503-525: The integration tests for vault_get_backlinks and
vault_get_outgoing_links only cover rejecting extensionless paths; add
controlled .canvas cases for both tools that verify they proceed past extension
validation and do not return the extension-validation error, while preserving
the existing rejection assertions.
In `@src/__tests__/integration/test-harness.ts`:
- Around line 179-199: The callTool helper currently narrows the SDK response
unsafely and TextBlock is unused. Derive ToolResult from Client["callTool"],
return the unasserted client.callTool result, remove TextBlock, and update
textContent to narrow SDK-supported content blocks to text before reading
block.text.
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AGENTS.mdsrc/__tests__/integration/fixtures/vault/Ambiguous Headings.mdsrc/__tests__/integration/server-error-contracts.test.tssrc/__tests__/integration/server-integration.test.tssrc/__tests__/integration/test-harness.ts
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…nto worktree-pr-460-monitor
…tance, SDK types - Add extension-rejection tests for vault_patch_note, vault_replace_in_note, vault_delete_note, vault_delete_span, vault_update_properties, and vault_move_note old_path (6 new tests) - Add .canvas acceptance tests for vault_get_backlinks and vault_get_outgoing_links (2 new tests) - Derive ToolResult from SDK's Client["callTool"] return type via Extract, replacing the manual TextBlock/ToolResult types and removing the `as` type assertion — uses a type guard (isContentResult) per project conventions 49 tests (was 41). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WRdqpH4py1tncFpDHC72to
AGENTS.md's MCP path conventions now accurately states that old_path accepts .md or .canvas — the handler's backlinks lookup validates with the wider extension set before the data-layer .md-only check. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WRdqpH4py1tncFpDHC72to
The SDK's StreamableHTTPClientTransport.sessionId is `string | undefined` while Transport declares `sessionId?: string` — incompatible under exactOptionalPropertyTypes. Replace the `as unknown as Transport` double assertion with @ts-expect-error, which self-cleans when the SDK fixes the type (unused directive is a compile error in TS 5+). Remove the now-unused Transport import. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WRdqpH4py1tncFpDHC72to
| /** Error contract integration tests — every tool's documented error paths | ||
| * verified over real HTTP transport against a real server. */ |
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Add error-contract tests for protected-path and read_file .md errors
Medium severity · tests · high confidence
The file header ('every tool's documented error paths verified') and the PR summary overstate coverage: vault_read_file rejecting .md paths (AGENTS.md MCP path conventions: 'must not end in .md — vaultFs.readAsset rejects notes'), vault_delete_note refusing PROTECTED_PATHS folders, and vault_move_note refusing an existing destination / protected paths are all documented error contracts (ARCHITECTURE) with no test in either integration file.
Failure scenario: A refactor removes the .md rejection from vaultFs.readAsset, drops the PROTECTED_PATHS guard from vault_delete_note, or strips the overwrite refusal from vault_move_note. A client then reads a note through vault_read_file, deletes About Me/Preferences.md, or clobbers an existing destination — and every test in both integration files still passes because none of these documented error paths is exercised.
Suggested fix
Add cases to `server-error-contracts.test.ts`: `vault_read_file` with `{ path: "Projects/alpha.md" }` asserting the `.md`-rejection error; `vault_delete_note` with `{ path: "About Me/Preferences.md" }` asserting the protected-path refusal (default `PROTECTED_PATHS` includes the memory dir); `vault_move_note` with `{ old_path: "Projects/alpha.md", new_path: "Projects/beta.md" }` asserting refuse-to-overwrite. Assert the specific documented messages from the tools' Errors sections.| it("vault_get_backlinks accepts .canvas paths", async () => { | ||
| const result = await callTool({ | ||
| client, | ||
| name: "vault_get_backlinks", | ||
| args: { path: "Boards/roadmap.canvas" }, | ||
| }) | ||
| expect(result.isError).not.toBe(true) | ||
| }) | ||
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| it("vault_get_outgoing_links accepts .canvas paths", async () => { | ||
| const result = await callTool({ | ||
| client, | ||
| name: "vault_get_outgoing_links", | ||
| args: { path: "Boards/roadmap.canvas" }, | ||
| }) | ||
| expect(result.isError).not.toBe(true) | ||
| }) | ||
| }) |
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Assert response content in the .canvas acceptance tests
Medium severity · tests · high confidence
The two .canvas acceptance tests assert only that isError is false. A backlinks/outgoing-links query for a path with no indexed links — or a path that does not exist in the fixture at all — returns a successful empty response, so the tests pass even when the canvas graph-query path is broken or the fixture file Boards/roadmap.canvas is missing.
Failure scenario: A regression drops canvas entries from the links table (or the fixture's Boards/roadmap.canvas is renamed/removed). vault_get_backlinks/vault_get_outgoing_links on that path return { isError: false } with empty contents because a link query for an unknown path yields no rows rather than an error; both tests stay green while the documented 'both note and canvas paths are valid graph queries' behavior is broken.
Suggested fix
Assert that the query actually reached the index, e.g. `expect(textContent(result)).toContain("Boards/roadmap.canvas")` for backlinks and a non-empty result text for outgoing_links (adjust to whatever the tool's response actually echoes). Keep the `isError` assertion as well. If the fixture does not contain `Boards/roadmap.canvas`, the test is currently exercising only the extension allowlist against a nonexistent path.| (`assertPathHasExtension(path, [".md", ".canvas"])`). **`vault_move_note`'s | ||
| `old_path`** also accepts `.md` or `.canvas` at the handler boundary — the | ||
| handler runs a backlinks lookup before the data-layer move, so `old_path` | ||
| is validated by the wider extension set; the data-layer `.md`-only check | ||
| runs second. |
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Test move old_path .canvas rejection at the data layer
Low severity · tests · medium confidence
The AGENTS.md edit claims vault_move_note's old_path accepts .md/.canvas at the handler boundary but 'the data-layer .md-only check runs second'. No test passes a .canvas old_path, so the claim is unpinned: if the second-stage check does not exist, a canvas old_path proceeds into the note-mover and is renamed with vault-wide link rewriting as if it were a note.
Failure scenario: A client calls vault_move_note with old_path: 'Boards/test.canvas' and a .md destination. The handler's backlinks lookup accepts the path per the wider extension set; if the documented data-layer .md-only check is absent, the note-mover renames the canvas file and rewrites every vault-wide link to it as a note link — an operation the new AGENTS.md text explicitly says is rejected. No unit or integration test in the provided files catches this.
Suggested fix
Add a test with `old_path: "Boards/test.canvas"` and a valid `.md` `new_path`, asserting the data-layer `.md` rejection (e.g. `'path must end in ".md" (received "Boards/test.canvas")'`). If the move instead succeeds, the AGENTS.md sentence is false and the data layer needs the `.md` check.1 participant
Summary
Errors:section returns the correct error message over real HTTP transportserver-integration.test.ts— different test concern (failure modes vs success paths), runs against default config onlyAmbiguous Headings.md) for heading ambiguity testsError categories covered
Design decisions
toContainover exact match — error messages include variable content (paths, available headings), so substring matching on the distinctive prefix is the right assertion level. Test-controlled variable parts (paths, section names) are included in the assertion.ToolResultis derived fromClient["callTool"]viaExtract<>, removing the manualTextBlocktype and theascast. A type guard (isContentResult) narrows the SDK union per project conventions.Test plan
ascast warning resolved)🤖 Generated with Claude Code