Merge branch 'main' into feat/spring-array-form-routes

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henry201605 2026-06-24 11:29:33 +08:00 • committed by GitHub
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5 changed files with 351 additions and 31 deletions

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@ -38,6 +38,12 @@ export interface CreateLoggerOptions {
debugEnvVar?: string;
/** Override destination stream — primarily for tests. */
destination?: DestinationStream;
/**
* Explicit level for the destination-override path — primarily for tests that
* need to capture below the default `info` (e.g. asserting a `debug` record).
* Ignored unless `destination` is set; `debugEnvVar` still wins when truthy.
*/
level?: string;
}
function isTruthyEnv(value: string | undefined): boolean {
@ -219,7 +225,7 @@ export function createLogger(name: string, opts?: CreateLoggerOptions): Logger {
if (opts?.destination) {
return pino(
{ level: debugRequested ? 'debug' : 'info', base: undefined, name },
{ level: debugRequested ? 'debug' : (opts.level ?? 'info'), base: undefined, name },
opts.destination,
);
}
@ -247,6 +253,7 @@ export function createLogger(name: string, opts?: CreateLoggerOptions): Logger {
/* ------------------------------------------------------------------ */
let _activeDestination: DestinationStream | undefined;
let _activeLevel: string | undefined;
let _cached: Logger | undefined;
function _getInner(): Logger {
@ -256,7 +263,7 @@ function _getInner(): Logger {
// by `_captureLogger()` below.
_cached = createLogger(
'gitnexus',
_activeDestination ? { destination: _activeDestination } : undefined,
_activeDestination ? { destination: _activeDestination, level: _activeLevel } : undefined,
);
return _cached;
}
@ -342,10 +349,13 @@ export interface LoggerCapture {
* expect(cap.records().some(r => r.msg?.includes('clamping'))).toBe(true);
* });
*
* Pass `level` (e.g. 'debug') to capture below the default 'info' — needed to
* assert that a record was emitted at debug rather than merely absent.
*
* Not a public API; underscore-prefixed and called only from test code.
* Throws if a previous capture is still active — see the body for context.
*/
export function _captureLogger(): LoggerCapture {
export function _captureLogger(level?: string): LoggerCapture {
// Guard against double-capture: forgetting `restore()` between two
// `_captureLogger()` calls silently abandoned the previous capture and
// corrupted logger state for the rest of the vitest worker. Throwing here
@ -358,6 +368,7 @@ export function _captureLogger(): LoggerCapture {
}
const w = new MemoryWritable();
_activeDestination = w;
_activeLevel = level;
_cached = undefined;
return {
records: () =>
@ -369,6 +380,7 @@ export function _captureLogger(): LoggerCapture {
text: () => w.chunks.join(''),
restore: () => {
_activeDestination = undefined;
_activeLevel = undefined;
_cached = undefined;
},
};

View file

@ -266,10 +266,39 @@ export const IMPACT_RELATION_CONFIDENCE: Readonly<Record<string, number>> = {
const confidenceForRelType = (relType: string | undefined): number =>
IMPACT_RELATION_CONFIDENCE[relType ?? ''] ?? 0.5;
/** Structured error logging for query failures — replaces empty catch blocks */
/**
* Structured logging for *swallowed* query failures — replaces empty catch
* blocks. The level reflects telemetry severity, NOT a promise about the
* caller: most callers catch the failure and degrade to a genuinely safe
* fallback (a usable result, usually with a caller-visible `partial`/`ftsUsed`
* flag), so these are not operation-level errors and must not log at `error`:
*
* - A benign missing optional table/label/column — a repo analyzed without
* processes/communities, or a pre-v3 PDG index lacking the `calleeIds`
* column — is a normal configuration, not a failure. Logged at `debug`
* (suppressed at the default `info` level; surfaced only when troubleshooting).
* - Any other swallowed failure is an unexpected-but-handled degradation:
* logged at `warn` so it stays observable without raising a false `error`
* alarm that would drown genuine, operation-aborting failures.
*
* `error` is intentionally NOT used here — it is reserved for failures that
* actually abort an operation, which log directly rather than through this
* best-effort-degradation helper.
*
* Contract for callers (#2283 review): only route a failure here when the
* caller ALSO surfaces the degradation in its result (a `partial` flag,
* `failed_files`, `traversalComplete:false`, …). A mutating or safety-critical
* path that would otherwise report success/clean (e.g. `rename` apply, the
* `detect_changes` safety gate) MUST set that result-level signal — `warn`
* alone is not a substitute for an honest result.
*/
function logQueryError(context: string, err: unknown): void {
const msg = err instanceof Error ? err.message : String(err);
logger.error({ context, err: msg }, 'GitNexus query failed');
if (isBenignMissingTableError(err)) {
logger.debug({ context, err: msg }, 'GitNexus query skipped (missing optional data)');
return;
}
logger.warn({ context, err: msg }, 'GitNexus query failed (degraded)');
}
/**
@ -282,7 +311,12 @@ function logQueryError(context: string, err: unknown): void {
*/
function isBenignMissingTableError(err: unknown): boolean {
const msg = err instanceof Error ? err.message : String(err ?? '');
return /does not exist|no such (table|label|rel)|unknown (table|label)|not (defined|found)/i.test(
// The `not (defined|found)` arm is scoped to a schema object (table/label/
// rel/column/property), mirroring lbug-adapter's isMissingColumnError
// (`/(table|column|property).*not found/i`): an unscoped "not found" matched
// operation failures like `rg: not found` (ripgrep absent) or `Symbol not
// found`, which this helper would then silently demote to `debug` (#2283).
return /does not exist|no such (table|label|rel)|unknown (table|label)|(table|label|rel|column|property)[^\n]*\bnot (defined|found)\b/i.test(
msg,
);
}
@ -1955,9 +1989,14 @@ export class LocalBackend {
try {
ftsResponse = await searchFTSFromLbug(query, limit, repo.lbugPath);
} catch (err: any) {
logger.error(
// Swallowed, gracefully-degraded failure: the search falls back to
// semantic-only (a valid result), and the most common cause is simply an
// un-indexed FTS extension — a normal configuration, not an operation
// error. Logged at warn (matching the sibling import-failure fallback
// above), never error, so it does not raise a false alarm.
logger.warn(
{ err: err.message },
'GitNexus: BM25/FTS search failed (FTS indexes may not exist) -',
'GitNexus: BM25/FTS search failed (FTS indexes may not exist) — falling back to semantic-only',
);
return { results: [], ftsUsed: false };
}
@ -3825,6 +3864,9 @@ export class LocalBackend {
// Map diff hunks to indexed symbols via range overlap
const changedSymbols: any[] = [];
// Set if a swallowed graph query fails below — surfaces `partial:true` so a
// degraded run cannot report a false-clean `risk_level:'low'` (#2283).
let queryDegraded = false;
for (const fileDiff of fileDiffs) {
if (fileDiff.hunks.length === 0) continue;
@ -3872,6 +3914,12 @@ export class LocalBackend {
}
} catch (e) {
logQueryError('detect-changes:file-symbols', e);
// The symbol query failed: changedSymbols stays empty and the result
// would otherwise look like a clean no-op (`changed_count:0`,
// `risk_level:'low'`). detect_changes is the pre-commit safety gate, so
// flag the result `partial` rather than let a swallowed failure
// masquerade as "nothing changed" (#2283).
queryDegraded = true;
}
}
@ -3910,6 +3958,7 @@ export class LocalBackend {
}
} catch (e) {
logQueryError('detect-changes:process-lookup', e);
queryDegraded = true;
}
}
@ -3932,6 +3981,9 @@ export class LocalBackend {
},
changed_symbols: changedSymbols,
affected_processes: Array.from(affectedProcesses.values()),
// A swallowed query failure makes the counts/risk above incomplete — tell
// the caller so the safety gate isn't trusted as a clean result (#2283).
...(queryDegraded && { partial: true }),
};
}
@ -4132,6 +4184,7 @@ export class LocalBackend {
const allChanges = Array.from(changes.values());
const totalEdits = allChanges.reduce((sum, c) => sum + c.edits.length, 0);
const failedFiles: string[] = [];
if (!dry_run) {
// Apply edits to files
for (const change of allChanges) {
@ -4142,13 +4195,17 @@ export class LocalBackend {
content = content.replace(regex, new_name);
await fs.writeFile(fullPath, content, 'utf-8');
} catch (e) {
// A swallowed write failure must not be reported as a full success
// (#2283): record the file so the result can degrade to 'partial'
// with the unwritten files listed, rather than masquerading as done.
logQueryError('rename:apply-edit', e);
failedFiles.push(change.file_path);
}
}
}
return {
status: 'success',
status: failedFiles.length > 0 ? 'partial' : 'success',
old_name: oldName,
new_name,
files_affected: allChanges.length,
@ -4157,6 +4214,7 @@ export class LocalBackend {
text_search_edits: astSearchEdits,
changes: allChanges,
applied: !dry_run,
...(failedFiles.length > 0 && { failed_files: failedFiles }),
};
}
@ -4490,9 +4548,21 @@ export class LocalBackend {
}
const mode = modeResult.mode;
// #2279: some MCP client/agent adapters serialize an *omitted* optional
// numeric field as `0` rather than dropping it, so callgraph calls arrive
// carrying a spurious `line: 0`. `line` is meaningless on the callgraph path
// (the symbol→symbol BFS has no statement notion), so treat a literal `0`
// there as omitted and let the normal traversal run. The coercion is
// deliberately narrow — only the literal `0`, only when mode !== 'pdg':
// a genuine positive `line` on callgraph still errors (real mode mistake),
// negative/fractional values still error, and pdg mode is untouched (the
// normalization is an identity there, so `line: 0` is still rejected below —
// there is no 1-based source line `0` to anchor on).
const effectiveLine = mode !== 'pdg' && params.line === 0 ? undefined : params.line;
// `line` is a PDG-only statement anchor. Reject it on the callgraph path
// rather than silently ignore (the symbol→symbol BFS has no statement notion).
if (params.line !== undefined && mode !== 'pdg') {
if (effectiveLine !== undefined && mode !== 'pdg') {
return {
error: `Parameter 'line' is only supported with mode:'pdg' (it anchors the dependence slice on a statement). Remove it or set mode:'pdg'.`,
target: { name: params.target },
@ -4503,8 +4573,8 @@ export class LocalBackend {
}
// A provided `line` must be a positive integer.
if (
params.line !== undefined &&
(!Number.isInteger(params.line) || (params.line as number) < 1)
effectiveLine !== undefined &&
(!Number.isInteger(effectiveLine) || (effectiveLine as number) < 1)
) {
// Line param fails validation before target resolution → partial-but-typed
// target on the pdg path (typed PdgImpactTarget, not an inline literal).
@ -4840,7 +4910,11 @@ export class LocalBackend {
symType,
direction,
maxDepth,
line: params.line,
// Use the normalized line, not raw params.line, so the gate and the
// engine share one source of truth (#2283). Identity in pdg mode today
// — effectiveLine === params.line when mode === 'pdg' — but this stays
// correct if the normalization ever stops being an identity here.
line: effectiveLine,
limit: Number.isFinite(params.limit) ? params.limit : 100,
// KTD2 extraction-seam discipline: hand the engine its DB dependency
// explicitly rather than `this.`-binding it. LocalBackend owns repo

View file

@ -469,9 +469,14 @@ SERVICE: optional monorepo path prefix (case-sensitive path segments). When "rep
},
line: {
type: 'integer',
minimum: 1,
// `minimum: 0` (not 1) so strict client/agent adapters that materialize
// an omitted optional numeric field as `0` do not reject the request
// before sending (#2279). A positive line is still required for a real
// pdg anchor — the backend enforces that — but `0`/omitted means "no
// statement anchor" and is tolerated on the callgraph path.
minimum: 0,
description:
"1-based source line — PDG statement anchor (mode:'pdg'). Seeds affectedStatements on the statement at this line; inter-procedural symbols are still returned in interproceduralByDepth/pdgInterprocedural and the compatibility byDepth bucket.",
"1-based source line — PDG statement anchor (mode:'pdg'). Seeds affectedStatements on the statement at this line; inter-procedural symbols are still returned in interproceduralByDepth/pdgInterprocedural and the compatibility byDepth bucket. Omit line for whole-symbol pdg (whole-symbol reach + diagnostics); a positive line anchors a statement slice. Literal 0 is tolerated only as an omitted-line compatibility sentinel on the callgraph path and is rejected for mode:'pdg'.",
},
file_path: {
type: 'string',

View file

@ -9,6 +9,7 @@
*/
import { describe, it, expect, vi, beforeEach } from 'vitest';
import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from 'fs';
import fsPromises from 'fs/promises';
import os from 'os';
import path from 'path';
@ -395,12 +396,23 @@ describe('LocalBackend.callTool', () => {
vi.mocked(searchFTSFromLbug).mockRejectedValueOnce(new Error('bm25Results is not iterable'));
(executeParameterized as any).mockResolvedValue([]);
const result = await backend.callTool('query', { query: 'auth' });
const cap = _captureLogger();
try {
const result = await backend.callTool('query', { query: 'auth' });
// Should still return a valid result shape (semantic-only fallback)
expect(result).toHaveProperty('processes');
expect(result).toHaveProperty('definitions');
expect(result).not.toHaveProperty('error');
// Should still return a valid result shape (semantic-only fallback)
expect(result).toHaveProperty('processes');
expect(result).toHaveProperty('definitions');
expect(result).not.toHaveProperty('error');
// The FTS fallback is a gracefully-degraded result, not an operation failure:
// it must log at warn (40), never error (50), matching its sibling
// import-failure fallback. Pins the severity against regression.
const fts = cap.records().find((r) => /BM25\/FTS search failed/.test(String(r.msg ?? '')));
expect(fts).toBeDefined();
expect(fts?.level).toBe(40);
} finally {
cap.restore();
}
});
it('skips vector index query when VECTOR is unsupported by the platform', async () => {
@ -1288,6 +1300,46 @@ describe('LocalBackend.callTool', () => {
expect(result.error).toContain('Either symbol_name or symbol_uid');
});
it('rename: a swallowed apply-edit write failure degrades to status:partial + failed_files (#2283)', async () => {
// Resolve the definition, no graph refs. readFile succeeds (so a def edit is
// recorded), but writeFile fails on apply — the failure is swallowed via
// logQueryError. The result must NOT report a clean success: it degrades to
// 'partial' and lists the unwritten file, instead of status:'success'.
(executeParameterized as any)
.mockResolvedValueOnce([
{
id: 'func:oldName',
name: 'oldName',
type: 'Function',
filePath: 'src/target.ts',
startLine: 1,
endLine: 5,
},
])
.mockResolvedValue([]);
const readSpy = vi
.spyOn(fsPromises, 'readFile')
.mockResolvedValue('function oldName() {}\n' as unknown as Buffer);
const writeSpy = vi
.spyOn(fsPromises, 'writeFile')
.mockRejectedValue(new Error('EACCES: permission denied'));
try {
const result = await backend.callTool('rename', {
symbol_name: 'oldName',
new_name: 'newName',
dry_run: false,
});
expect(result.status).toBe('partial');
expect(result.failed_files).toContain('src/target.ts');
// It DID attempt to apply (not a dry run) — `applied` stays true; the
// honest signal is the 'partial' status + failed_files, not `applied`.
expect(result.applied).toBe(true);
} finally {
readSpy.mockRestore();
writeSpy.mockRestore();
}
});
// api_impact tool
it('dispatches api_impact tool with route param', async () => {
(executeParameterized as any).mockResolvedValue([
@ -1642,6 +1694,67 @@ describe('LocalBackend impact mode (KTD1/KTD5/KTD12)', () => {
},
);
// #2279: some MCP client/agent adapters serialize an *omitted* optional
// numeric field as `0`. On the callgraph path `line` is meaningless, so a
// literal `line: 0` must be tolerated as omitted (NOT the PDG-only error) and
// route to the normal BFS — distinct from a genuine positive `line` (above),
// which stays a hard error.
it.each<['callgraph' | undefined]>([['callgraph'], [undefined]])(
'mode:%j + adapter-materialized line:0 is treated as omitted and runs the BFS (#2279)',
async (mode) => {
resolveSingleTarget();
const bfsSpy = vi.spyOn(backend as any, '_runImpactBFS');
const result = await backend.callTool('impact', {
target: 'main',
direction: 'upstream',
mode,
line: 0,
});
// No PDG-only error, no positive-integer error — line:0 is swallowed.
expect(result.error ?? '').not.toMatch(/'line' is only supported with mode:'pdg'/);
expect(result.error ?? '').not.toMatch(/'line' must be a positive integer/);
expect(result.target).toBeDefined();
expect(bfsSpy).toHaveBeenCalledTimes(1);
},
);
it.each<['callgraph' | undefined]>([['callgraph'], [undefined]])(
'mode:%j + line:-1 still errors — the line:0 coercion is narrow, only literal 0 (#2279)',
async (mode) => {
resolveSingleTarget();
const result = await backend.callTool('impact', {
target: 'main',
direction: 'upstream',
mode,
line: -1,
});
// A negative line is a real mistake, not an adapter-materialized "omitted":
// it must NOT be swallowed like line:0, and stays the PDG-only hard error.
expect(result.error).toMatch(/'line' is only supported with mode:'pdg'/);
},
);
it("mode:'callgraph'/undefined + line:0 is byte-identical to omitting line (#2279)", async () => {
resolveSingleTarget();
const omitted = await backend.callTool('impact', { target: 'main', direction: 'upstream' });
const callgraphZero = await backend.callTool('impact', {
target: 'main',
direction: 'upstream',
mode: 'callgraph',
line: 0,
});
const undefZero = await backend.callTool('impact', {
target: 'main',
direction: 'upstream',
mode: undefined,
line: 0,
});
// The normalization must leave the callgraph result indistinguishable from a
// call that never carried `line` — the spurious 0 must not leak into output.
expect(callgraphZero).toEqual(omitted);
expect(undefZero).toEqual(omitted);
});
it.each([[0], [-1], [1.5]])(
"mode:'pdg' + non-positive-integer line %j → structured {error}, never routed to traversal",
async (badLine) => {
@ -1821,15 +1934,121 @@ describe('LocalBackend impact mode (KTD1/KTD5/KTD12)', () => {
criterionLine: 8,
});
const bfsSpy = vi.spyOn(backend as any, '_runImpactBFS');
const result = await backend.callTool('impact', {
target: 'main',
direction: 'downstream',
mode: 'pdg',
line: 8,
const cap = _captureLogger();
try {
const result = await backend.callTool('impact', {
target: 'main',
direction: 'downstream',
mode: 'pdg',
line: 8,
});
// The error was swallowed: no bridge passed to the BFS, and no error surfaced.
expect(result.error).toBeUndefined();
expect(bfsSpy.mock.calls[0][4].pdgBridge).toBeUndefined();
// The swallowed, gracefully-degraded query failure is logged at warn (40),
// never error (50): it degraded to a safe fallback and is not an operation
// failure. Pinning the severity guards against a regression to a false
// ERROR alarm that would drown genuine, operation-aborting failures.
const slice = cap.records().find((r) => r.context === 'impact:pdg-slice-callees');
expect(slice).toBeDefined();
expect(slice?.level).toBe(40);
} finally {
cap.restore();
}
});
it("mode:'pdg' slice-callees failing with a benign missing-table error logs at debug, not warn", async () => {
// A repo analyzed without the optional column/table (e.g. a pre-v3 PDG index
// missing `calleeIds`, or a BasicBlock table that simply isn't there) makes the
// slice-callees query fail with a benign "missing optional data" error. That is a
// normal configuration, not a degradation, so logQueryError routes it to debug —
// suppressed at the default info level. We capture AT debug so the record is
// visible: the assertion is that it was emitted AND at debug (level 10), which
// distinguishes "logged at debug" from "not logged at all" — an info-level
// absence check could not tell those apart and would pass vacuously if the
// logQueryError call were deleted.
resolveSingleTarget();
vi.mocked(executeParameterized).mockImplementation(async (_repo, query) => {
if (query.includes('RETURN b.callees')) throw new Error('Table BasicBlock does not exist');
return [{ id: 'func:main', name: 'main', type: 'Function', filePath: 'src/index.ts' }];
});
// The error was swallowed: no bridge passed to the BFS, and no error surfaced.
expect(result.error).toBeUndefined();
expect(bfsSpy.mock.calls[0][4].pdgBridge).toBeUndefined();
vi.spyOn(backend as any, '_runImpactPDG').mockResolvedValueOnce({
mode: 'pdg',
target: { id: 'func:main', name: 'main', type: 'Function', filePath: 'src/index.ts' },
direction: 'downstream',
risk: 'UNKNOWN',
impactedCount: 0,
epistemic: 'pdg-intra-procedural',
reachableBlocks: ['BasicBlock:src/index.ts:8:0:1'],
intraReachableBlocks: ['BasicBlock:src/index.ts:8:0:1'],
seedBlocks: ['BasicBlock:src/index.ts:8:0:0'],
blockCount: 1,
affectedStatements: [{ line: 8, filePath: 'src/index.ts', text: 'callee()' }],
affectedStatementCount: 1,
criterionLine: 8,
});
const bfsSpy = vi.spyOn(backend as any, '_runImpactBFS');
const cap = _captureLogger('debug');
try {
const result = await backend.callTool('impact', {
target: 'main',
direction: 'downstream',
mode: 'pdg',
line: 8,
});
// Still degrades cleanly to no bridge / no surfaced error.
expect(result.error).toBeUndefined();
expect(bfsSpy.mock.calls[0][4].pdgBridge).toBeUndefined();
// The benign failure was emitted at debug (20) — NOT warn (40)/error (50).
// Capturing at debug proves the call fired and chose the suppressed level.
const slice = cap.records().find((r) => r.context === 'impact:pdg-slice-callees');
expect(slice).toBeDefined();
expect(slice?.level).toBe(20);
} finally {
cap.restore();
}
});
it("mode:'pdg' slice-callees failing with a non-schema 'not found' error logs at warn, not debug (#2283)", async () => {
// "Symbol not found" is an operation failure, not a benign missing optional
// table — isBenignMissingTableError must NOT match an unscoped "not found"
// (only "<table|column|property|…> … not found"), so it stays visible at warn
// rather than being demoted to the suppressed debug level.
resolveSingleTarget();
vi.mocked(executeParameterized).mockImplementation(async (_repo, query) => {
if (query.includes('RETURN b.callees')) throw new Error('Symbol not found');
return [{ id: 'func:main', name: 'main', type: 'Function', filePath: 'src/index.ts' }];
});
vi.spyOn(backend as any, '_runImpactPDG').mockResolvedValueOnce({
mode: 'pdg',
target: { id: 'func:main', name: 'main', type: 'Function', filePath: 'src/index.ts' },
direction: 'downstream',
risk: 'UNKNOWN',
impactedCount: 0,
epistemic: 'pdg-intra-procedural',
reachableBlocks: ['BasicBlock:src/index.ts:8:0:1'],
intraReachableBlocks: ['BasicBlock:src/index.ts:8:0:1'],
seedBlocks: ['BasicBlock:src/index.ts:8:0:0'],
blockCount: 1,
affectedStatements: [{ line: 8, filePath: 'src/index.ts', text: 'callee()' }],
affectedStatementCount: 1,
criterionLine: 8,
});
vi.spyOn(backend as any, '_runImpactBFS');
const cap = _captureLogger();
try {
await backend.callTool('impact', {
target: 'main',
direction: 'downstream',
mode: 'pdg',
line: 8,
});
const slice = cap.records().find((r) => r.context === 'impact:pdg-slice-callees');
expect(slice).toBeDefined();
expect(slice?.level).toBe(40);
} finally {
cap.restore();
}
});
it("mode:'pdg' + crossDepth → hard {error} (single-repo PDG impact)", async () => {

View file

@ -134,17 +134,27 @@ describe('GITNEXUS_TOOLS', () => {
expect(impactTool.inputSchema.required).toContain('direction');
});
it('impact tool advertises the PDG-only `line` statement anchor (integer, min 1, not required)', () => {
it('impact tool advertises the PDG-only `line` statement anchor (integer, min 0, not required)', () => {
const impactTool = GITNEXUS_TOOLS.find((t) => t.name === 'impact')!;
const line = (impactTool.inputSchema.properties as Record<string, any>).line;
expect(line).toBeDefined();
expect(line.type).toBe('integer');
expect(line.minimum).toBe(1);
// minimum is 0 (not 1) so strict adapters that materialize an omitted
// optional numeric field as `0` are not rejected client-side (#2279); a
// positive line is enforced backend-side for a real pdg anchor.
expect(line.minimum).toBe(0);
// Statement-anchored slice is optional — never required.
expect(impactTool.inputSchema.required).not.toContain('line');
// The description names the mode:'pdg' statement-anchor semantics.
// The description names the mode:'pdg' statement-anchor semantics and the
// literal-0 compatibility convention — without contradicting the top-level
// "omit line for whole-symbol pdg" contract (#2283).
expect(line.description).toMatch(/statement anchor/i);
expect(line.description).toMatch(/pdg/i);
expect(line.description).toMatch(/literal 0 is tolerated only .* on the callgraph path/i);
expect(line.description).toMatch(/omit line for whole-symbol pdg/i);
// Must NOT claim pdg "requires a positive line" — that contradicts the valid
// no-line whole-symbol pdg call documented in the top-level description.
expect(line.description).not.toMatch(/requires a positive line/i);
// The top-level description mentions the statement-anchored slice and result shape.
expect(impactTool.description).toMatch(/statement-anchored|STATEMENT-ANCHORED/);
expect(impactTool.description).toContain('affectedStatements');