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import { describe, it, expect } from "vitest";
import { readFileSync } from "node:fs";
import path from "path";
import { globSync } from "glob";
import { loadFixtureFile, validateFixtures } from "@copilotkit/aimock";
import type { ValidationResult } from "@copilotkit/aimock";
const REPO_ROOT = path.resolve(__dirname, "..", "..", "..");
const fixtureFiles: string[] = [
...globSync("showcase/aimock/shared/*.json", {
cwd: REPO_ROOT,
absolute: true,
}),
...globSync("showcase/aimock/d4/**/*.json", {
cwd: REPO_ROOT,
absolute: true,
}),
...globSync("showcase/aimock/d6/**/*.json", {
cwd: REPO_ROOT,
absolute: true,
}),
...globSync("examples/integrations/*/fixtures/*.json", {
cwd: REPO_ROOT,
absolute: true,
}),
...globSync("scripts/doc-tests/fixtures/*.json", {
cwd: REPO_ROOT,
absolute: true,
}),
];
// ---------------------------------------------------------------------------
// Raw fixture entry with context preserved (loadFixtureFile strips context,
// but we need it for collision detection).
// ---------------------------------------------------------------------------
interface RawFixtureEntry {
match: {
userMessage?: string;
toolCallId?: string;
toolName?: string;
model?: string;
hasToolResult?: boolean;
turnIndex?: number;
sequenceIndex?: number;
endpoint?: string;
context?: string;
[key: string]: unknown;
};
response: unknown;
[key: string]: unknown;
}
/**
* Build a deterministic match key from the match object. The key encodes
* every field that aimock uses for disambiguation so two fixtures with
* identical keys would always collide at runtime.
*/
function matchKey(match: RawFixtureEntry["match"]): string {
const parts: string[] = [];
// Alphabetical, stable order
if (match.endpoint != null) parts.push(`endpoint=${match.endpoint}`);
if (match.hasToolResult != null)
parts.push(`hasToolResult=${match.hasToolResult}`);
if (match.model != null) parts.push(`model=${match.model}`);
if (match.sequenceIndex != null)
parts.push(`sequenceIndex=${match.sequenceIndex}`);
if (match.toolCallId != null) parts.push(`toolCallId=${match.toolCallId}`);
if (match.toolName != null) parts.push(`toolName=${match.toolName}`);
if (match.turnIndex != null) parts.push(`turnIndex=${match.turnIndex}`);
if (match.userMessage != null) parts.push(`userMessage=${match.userMessage}`);
return parts.join("|");
}
/** Load raw fixture entries from a JSON file, preserving context. */
function loadRawFixtures(filePath: string): RawFixtureEntry[] {
try {
const data = JSON.parse(readFileSync(filePath, "utf-8"));
return (data.fixtures ?? []) as RawFixtureEntry[];
} catch {
return [];
}
}
interface TaggedFixture {
entry: RawFixtureEntry;
file: string; // relative path
index: number; // index within file
}
/** Scope key: the context value, or "__shared__" for context-less fixtures. */
const SHARED_SCOPE = "__shared__";
function scopeOf(entry: RawFixtureEntry): string {
return entry.match.context ?? SHARED_SCOPE;
}
// ---------------------------------------------------------------------------
// Deployment scopes — d4 and d6 fixtures never coexist at runtime, so
// collision detection must check within each deployment's load set:
// d4 runtime loads: shared/ + d4/
// d6 runtime loads: shared/ + d6/
// ---------------------------------------------------------------------------
const sharedFiles = globSync("showcase/aimock/shared/*.json", {
cwd: REPO_ROOT,
absolute: true,
});
const d4Files = globSync("showcase/aimock/d4/**/*.json", {
cwd: REPO_ROOT,
absolute: true,
});
const d6Files = globSync("showcase/aimock/d6/**/*.json", {
cwd: REPO_ROOT,
absolute: true,
});
function tagFiles(files: string[]): TaggedFixture[] {
return files.flatMap((fp) => {
const rel = path.relative(REPO_ROOT, fp);
return loadRawFixtures(fp).map((entry, i) => ({
entry,
file: rel,
index: i,
}));
});
}
const sharedTagged = tagFiles(sharedFiles);
const d4Tagged = tagFiles(d4Files);
const d6Tagged = tagFiles(d6Files);
/** Build a Map<contextScope, TaggedFixture[]> for a deployment's fixture set. */
function groupByContext(
fixtures: TaggedFixture[],
): Map<string, TaggedFixture[]> {
const map = new Map<string, TaggedFixture[]>();
for (const t of fixtures) {
const scope = scopeOf(t.entry);
if (!map.has(scope)) map.set(scope, []);
map.get(scope)!.push(t);
}
return map;
}
// Two deployment scopes: shared+d4 and shared+d6
const deploymentScopes: {
name: string;
byContext: Map<string, TaggedFixture[]>;
}[] = [
{ name: "d4", byContext: groupByContext([...sharedTagged, ...d4Tagged]) },
{ name: "d6", byContext: groupByContext([...sharedTagged, ...d6Tagged]) },
];
describe("aimock fixtures across repo", () => {
it("discovers at least one fixture file", () => {
expect(
fixtureFiles.length,
"fixture discovery returned 0 files — misconfigured glob or missing fixtures",
).toBeGreaterThan(0);
});
for (const filePath of fixtureFiles) {
const relative = path.relative(REPO_ROOT, filePath);
it(`${relative} loads and validates with zero errors`, () => {
const fixtures = loadFixtureFile(filePath);
// If loadFixtureFile returns [], the file itself is broken (unreadable,
// invalid JSON, or missing "fixtures" array). Treat as fatal.
expect(
fixtures.length,
`${relative} produced 0 fixtures — file is unreadable or malformed`,
).toBeGreaterThan(0);
const results = validateFixtures(fixtures);
const errors = results.filter(
(r: ValidationResult) => r.severity === "error",
);
if (errors.length > 0) {
const detail = errors
.map((e: ValidationResult) => ` [${e.fixtureIndex}] ${e.message}`)
.join("\n");
throw new Error(
`${relative} has ${errors.length} fixture validation error(s):\n${detail}`,
);
}
expect(errors).toEqual([]);
});
}
});
// ---------------------------------------------------------------------------
// Fixture collision detection
//
// Each test iterates over deployment scopes (d4, d6) independently because
// d4 and d6 fixtures never coexist at runtime.
// ---------------------------------------------------------------------------
describe("fixture collision detection", () => {
it("no exact duplicate match keys within the same context scope", () => {
// Known baseline: 230 duplicates across D6 feature files where different
// demos share the same pill prompts and toolCallIds. Bumped from 11 → 230
// when D6 per-integration fixtures were added — each integration's new
// feature-type fixtures (gen-ui-declarative, multimodal, prebuilt-*,
// tool-rendering-*-catchall, etc.) naturally share match keys with the
// pre-existing demo fixtures (render-a2ui, agentic-chat, tool-rendering,
// gen-ui-tool-based) for the same integration. At runtime these are
// disambiguated by the active demo / probe path.
//
// Bumped 230 → 276 (+46) when the gen-ui-headless-complete.json alias was
// added across all 18 slugs. The gen-ui-headless-complete probe references
// a dedicated fixtureFile but drives the same 4 headless-complete pills
// (weather/stock/highlight/revenue), so its 8 fixtures per slug share
// match keys with the pre-existing headless-complete.json for that
// context. These are disambiguated at runtime by the probe's fixtureFile
// / demo route, exactly like the other cross-feature key overlaps above.
//
// Bumped 276 → 288 (+12) when the declarative-gen-ui demo moved to the
// CopilotKitMiddleware auto-A2UI path across the 3 langgraph integrations
// (langgraph-python / -typescript / -fastapi). The middleware's inner
// forced tool is `render_a2ui`, so each integration's gen-ui-declarative.json
// gained 4 `render_a2ui` fixtures (KPI dashboard / pie / bar / status) that
// share match keys with the pre-existing render_a2ui entries in that
// integration's render-a2ui.json (the a2ui_fixed demo). 4 pills × 3
// integrations = 12. Disambiguated at runtime by the probe's fixtureFile /
// demo route, like the other cross-feature overlaps above.
//
// Bumped 288 → 290 (+2) when the hitl / gen-ui-interrupt / threadid demos
// were ported to google-adk (W3 parity). The new per-demo google-adk
// fixtures reuse google-adk's standard prebuilt-probe pills ("hi from the
// popup/sidebar test"), so they share match keys with the pre-existing
// prebuilt-popup.json / prebuilt-sidebar.json entries for that context.
// Disambiguated at runtime by the probe's fixtureFile / demo route, like
// the other cross-feature overlaps above.
//
// Bumped 290 → 291 (+1) in #5427 when BIA tool-rendering.json's bare 'AAPL'
// matchers were tightened to 'current price of AAPL' to stop shadowing
// gen-ui-headless-complete.json's 'price of AAPL right now' headless pill.
// The tightened matchers share keys with tool-rendering-custom-catchall.json's
// pre-existing 'current price of AAPL' entries in the same BIA context (the
// hasToolResult:false emitter pair and the hasToolResult:true narration pair).
// Disambiguated at runtime by feature route (tool-rendering vs custom-catchall
// fixtureFile) plus the catchall's distinct first prompt ('check Tokyo weather
// forecast') that gates the multi-pill session before the AAPL pill fires.
//
// NOTE: the a2ui-recovery demos (langgraph python/fastapi/typescript +
// strands python/typescript) deliberately use UNIQUE recovery prompts per
// framework. Inner render_a2ui fixtures cannot be context-scoped (the in-graph
// render sub-agent's model client does not forward x-aimock-context), and
// aimock loads every framework's d6 dir into one process, so identical prompts
// would let the first-loaded framework's fixture hijack another's render calls.
// Unique prompts keep each framework's inner fixtures distinct → no new
// shared-scope duplicates, so this ceiling stays at the pre-recovery baseline.
//
// Bumped 291 → 297 (+6) for the Claude SDK demo parity port after
// de-duplicating avoidable no-context beautiful-chat fallbacks. The
// remaining new overlaps are context-scoped cross-demo fixture aliases
// (interrupt/gen-ui-interrupt, declarative/render_a2ui, and copied
// LangGraph headless/feature-parity routes) that are disambiguated by
// fixtureFile/demo route like the existing integration parity copies above.
const KNOWN_DUPLICATE_CEILING = 297;
const collisions: string[] = [];
for (const { name: deploy, byContext } of deploymentScopes) {
for (const [ctx, fixtures] of byContext) {
const seen = new Map<string, TaggedFixture>();
for (const t of fixtures) {
const key = matchKey(t.entry.match);
const prev = seen.get(key);
if (prev) {
collisions.push(
`[${deploy}] context="${ctx}" key="${key}"\n` +
` first: ${prev.file}[${prev.index}]\n` +
` second: ${t.file}[${t.index}]`,
);
} else {
seen.set(key, t);
}
}
}
}
expect(
collisions.length,
`Exact duplicate count (${collisions.length}) exceeds ceiling (${KNOWN_DUPLICATE_CEILING}).\n` +
`Entries beyond the ceiling (iteration order — NOT necessarily the newly introduced ones; diff against the baseline to find the real offenders):\n${collisions.slice(KNOWN_DUPLICATE_CEILING).join("\n\n")}`,
).toBeLessThanOrEqual(KNOWN_DUPLICATE_CEILING);
});
it("no substring shadow collisions within the same context scope", () => {
// A "substring shadow" is when fixture A's userMessage is a substring
// of fixture B's userMessage, AND they share the same values for all
// other differentiating fields (toolName, toolCallId, hasToolResult,
// turnIndex, sequenceIndex, endpoint). In that case aimock's substring
// matching would cause A to shadow B (or vice versa depending on load
// order), leading to non-deterministic behavior.
//
// Known baseline: 128 pre-existing shadows across d4+d6 (tracked for
// cleanup). The D6 per-integration feature-type fixtures
// (tool-rendering-*-catchall, agent-config, gen-ui-interrupt) create
// expected substring overlaps with pre-existing fixtures in the same
// context (e.g. "What's the current price of AAPL?" vs "AAPL" in
// tool-rendering.json, or "tone:professional — ..." vs
// "tone:professional" in chat-css.json). These are disambiguated at
// runtime by other match fields (toolCallId, toolName, turnIndex).
// This test fails if the count INCREASES, preventing new shadows
// from being introduced. Ratchet down as shadows are cleaned up.
// Bumped 123→128 in #5412: 5 new substring overlaps in d6/{ag2,cst}
// gen-ui-declarative + cst/tool-rendering fixtures, runtime-disambiguated
// by toolCallId chunk boundaries and load-order ordering of inner-call
// mirrors before outer fixtures (see _meta._note in those files).
// Bumped 128→134 in #5427: 6 new substring overlaps in
// d6/built-in-agent/{tool-rendering, tool-rendering-reasoning-chain}
// fixtures from the BIA 5-tool D6 port (weather/flight/stock/d20/
// catchall pill variants), runtime-disambiguated by toolName +
// toolCallId.
//
// Ratcheted 134→132 (-2) in #5427 follow-up: BIA tool-rendering.json's
// bare 'AAPL' matchers were tightened to 'current price of AAPL' (no
// longer a substring of gen-ui-headless-complete's 'price of AAPL right
// now' pill), removing 2 pre-existing shadow pairs. The companion
// sequenceIndex-gated emitter + narration-fallback pairs in
// gen-ui-headless-complete.json do not introduce new shadows — the
// narration fallbacks share the same userMessage prefix as the emitters
// (which the shadow detector skips because identical strings are caught
// by the exact-duplicate test, not the shadow test).
// Bumped 132→137: +5 substring shadows from the strands-typescript D6 port
// (its per-integration fixtures mirror the Python strands sibling —
// calculator + tool-rendering pill variants), runtime-disambiguated by
// toolCallId / toolName / turnIndex like the other per-integration copies.
// Bumped 139→142 after this PR rebased against current main. The remaining
// counted shadows are pre-existing D4/D6 baseline overlaps (for example
// weather/AAPL/project-planning/calculator prompt variants), not Claude SDK
// local fallback aliases. Browser-local Claude demos now get an AIMock
// context header from server-side HttpAgent defaults instead of relying on
// context-less prompt aliases.
const KNOWN_SHADOW_CEILING = 142;
const shadows: string[] = [];
for (const { name: deploy, byContext } of deploymentScopes) {
for (const [ctx, fixtures] of byContext) {
// Only consider fixtures that have a userMessage
const withMsg = fixtures.filter(
(t) => typeof t.entry.match.userMessage === "string",
);
for (let i = 0; i < withMsg.length; i++) {
for (let j = i + 1; j < withMsg.length; j++) {
const a = withMsg[i];
const b = withMsg[j];
const msgA = a.entry.match.userMessage!;
const msgB = b.entry.match.userMessage!;
// Skip if messages are identical (caught by exact-duplicate test)
if (msgA === msgB) continue;
// Check substring relationship
const aInB = msgB.includes(msgA);
const bInA = msgA.includes(msgB);
if (!aInB && !bInA) continue;
// Check if other differentiating criteria are identical
const diffFields = [
"toolName",
"toolCallId",
"hasToolResult",
"turnIndex",
"sequenceIndex",
"endpoint",
] as const;
const sameOtherCriteria = diffFields.every(
(f) => a.entry.match[f] === b.entry.match[f],
);
if (!sameOtherCriteria) continue;
const shorter = aInB ? a : b;
const longer = aInB ? b : a;
shadows.push(
`[${deploy}] context="${ctx}"\n` +
` shorter: "${shorter.entry.match.userMessage}" ` +
`(${shorter.file}[${shorter.index}])\n` +
` longer: "${longer.entry.match.userMessage}" ` +
`(${longer.file}[${longer.index}])`,
);
}
}
}
}
// Ratchet: fail if new shadows are introduced; lower the ceiling as
// pre-existing shadows are cleaned up.
expect(
shadows.length,
`Substring shadow count (${shadows.length}) exceeds ceiling (${KNOWN_SHADOW_CEILING}).\n` +
`Entries beyond the ceiling (iteration order — NOT necessarily the newly introduced ones; diff against the baseline to find the real offenders):\n${shadows.slice(KNOWN_SHADOW_CEILING).join("\n\n")}`,
).toBeLessThanOrEqual(KNOWN_SHADOW_CEILING);
});
it("shared (no-context) fixtures have no exact userMessage collisions with scoped fixtures", () => {
// Shared fixtures (no context field) match ANY context at runtime.
// If a shared fixture has the same userMessage as a scoped fixture,
// the match is ambiguous — load order determines which wins.
const sharedWithMsg = sharedTagged.filter(
(t) => typeof t.entry.match.userMessage === "string",
);
if (sharedWithMsg.length === 0) return; // nothing to check
const collisions: string[] = [];
for (const { name: deploy, byContext } of deploymentScopes) {
for (const [ctx, fixtures] of byContext) {
if (ctx === SHARED_SCOPE) continue;
for (const s of sharedWithMsg) {
for (const t of fixtures) {
if (typeof t.entry.match.userMessage !== "string") continue;
if (s.entry.match.userMessage !== t.entry.match.userMessage)
continue;
collisions.push(
`[${deploy}] userMessage="${s.entry.match.userMessage}"\n` +
` shared: ${s.file}[${s.index}]\n` +
` scoped: ${t.file}[${t.index}] (context="${ctx}")`,
);
}
}
}
}
if (collisions.length > 0) {
throw new Error(
`Found ${collisions.length} shared-vs-scoped userMessage collision(s):\n\n${collisions.join("\n\n")}`,
);
}
});
});