enieuwy
77ee3f2e7e
A single-model subagent is pinned to a `subagent:<id>` role whose `retry.fallbackChains` entry shadows every configured role chain, so the chain it inherits decides where the child retries. Inheritance resolved the role by re-deriving it from the child's `modelPatterns` — but every spawn path expands the role alias into `modelOverride` before calling `runSubprocess` (`modelPatterns = normalizeModelPatterns(modelOverride ?? agent.model)`), so `@task` never reached the derivation and it returned `undefined` every time. Every task subagent inherited `chains.default`. With `modelRoles.task: anthropic/claude-sonnet-5`, `task` chained to sonnet alone, and `default` chained to sonnet plus a second provider, a transient stall on sonnet routed the child onto the default chain's second model — one the operator had deliberately kept out of the `task` chain — and a quota error there killed a 28-minute run. #7694 fixed only the shape where an unexpanded alias reaches the executor, which no production caller produces; its tests supplied a bare `agent.model: ["@smol"]` with no `modelOverride`. The incident above happened on v17.2.10, which contains that fix. Route inheritance off the role identity the spawn path already computes and passes as `modelRole`. Since that leaves the pattern-derived operand unreachable, drop it and the parameter it was the only user of. The vibe worker path had the same defect independently: `#resolveWorker` expanded `@task`/`@smol` for the bundled `task`/`sonic` workers and kept no role, so vibe children inherited `default` no matter what the executor did. It now carries `modelRole` on `ResolvedVibeWorker` and `VibeRecord` through both the spawn and rehydrate sites. To stop the two halves drifting apart again — the mistake that caused this bug — `resolveAgentModelSelection` returns the expanded `patterns` and the pre-expansion `role` from one call, and both spawn paths take both from it. `resolveAgentModelSource` is removed: its only use was being fed to `resolveExplicitModelRole`, and keeping it invites the same split derivation. `resolveAgentModelPatterns` stays for the UI callers that legitimately want patterns alone. Tests cover the producible shapes: the incident's chain layout (role chain equal to the primary, default chain a superset), role identity surviving expansion for every alias-routed bundled agent, and the patterns/role pairing itself. #7694's two tests are re-anchored to a shape a real caller produces.
516 lines
20 KiB
TypeScript
516 lines
20 KiB
TypeScript
import { afterEach, describe, expect, it, vi } from "bun:test";
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import type { Api, Model } from "@oh-my-pi/pi-ai";
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import { buildModel } from "@oh-my-pi/pi-catalog/build";
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import { Settings } from "@oh-my-pi/pi-coding-agent/config/settings";
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import * as sdkModule from "@oh-my-pi/pi-coding-agent/sdk";
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import type { AgentSession } from "@oh-my-pi/pi-coding-agent/session/agent-session";
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import { runSubprocess } from "@oh-my-pi/pi-coding-agent/task/executor";
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import type { AgentDefinition } from "@oh-my-pi/pi-coding-agent/task/types";
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function model(provider: string, id: string): Model<Api> {
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return buildModel({
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provider,
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id,
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name: id,
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api: "openai-completions",
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baseUrl: provider === "openrouter" ? "https://openrouter.ai/api/v1" : `https://${provider}.example.test`,
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reasoning: false,
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input: ["text"],
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cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
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contextWindow: 128000,
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maxTokens: 8192,
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});
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}
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function createYieldingSession(): AgentSession {
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const listeners: Array<(event: { type: string; [key: string]: unknown }) => void> = [];
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const session = {
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agent: { state: { systemPrompt: ["test"] } },
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state: { messages: [] },
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extensionRunner: undefined,
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sessionManager: { appendSessionInit: () => {} },
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getActiveToolNames: () => ["yield"],
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getEnabledToolNames: () => ["yield"],
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setActiveToolsByName: async () => {},
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setIrcWakeTurnObserver: () => {},
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subscribe: (listener: (event: { type: string; [key: string]: unknown }) => void) => {
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listeners.push(listener);
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return () => {};
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},
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prompt: async () => {
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for (const listener of listeners) {
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listener({
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type: "retry_fallback_applied",
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from: "primary/bad-runtime-model",
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to: "fallback/working-model",
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role: "subagent:issue-2750",
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});
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listener({
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type: "tool_execution_end",
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toolCallId: "tool-yield",
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toolName: "yield",
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result: { content: [{ type: "text", text: "Result submitted." }], details: { status: "success" } },
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isError: false,
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});
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}
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},
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waitForIdle: async () => {},
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getLastAssistantMessage: () => undefined,
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abort: async () => {},
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dispose: async () => {},
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};
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return session as unknown as AgentSession;
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}
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describe("subagent runtime model resolution", () => {
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afterEach(() => {
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vi.restoreAllMocks();
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});
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it("passes ordered subagent candidates as a child retry fallback chain", async () => {
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const primary = model("primary", "bad-runtime-model");
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const fallback = model("fallback", "working-model");
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let childFallbackChains: Record<string, string[]> | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains") as Record<string, string[]> | undefined;
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
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const settings = Settings.isolated({
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"retry.fallbackChains": {
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default: ["global/inherited-model"],
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},
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});
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settings.setModelRole("default", "primary/bad-runtime-model");
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const result = await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "issue-2750",
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modelOverride: ["primary/bad-runtime-model", "fallback/working-model"],
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settings,
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [primary, fallback],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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let firstFallbackRole: string | undefined;
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let subagentFallbackChain: string[] | undefined;
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let inheritedFallbackChain: string[] | undefined;
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for (const role in childFallbackChains) {
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const chain = childFallbackChains[role];
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if (!firstFallbackRole) {
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firstFallbackRole = role;
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}
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if (role === "subagent:issue-2750") {
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subagentFallbackChain = chain;
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}
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if (role === "default") {
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inheritedFallbackChain = chain;
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}
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}
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expect(firstFallbackRole).toBe("subagent:issue-2750");
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expect(subagentFallbackChain).toEqual(["fallback/working-model"]);
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expect(inheritedFallbackChain).toEqual(["global/inherited-model"]);
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expect(result.modelOverride).toEqual(["primary/bad-runtime-model", "fallback/working-model"]);
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expect(result.resolvedModel).toBe("fallback/working-model");
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});
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it("inherits an explicitly configured default fallback chain for a single subagent model", async () => {
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const primary = model("lm-studio", "local-reviewer");
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const fallback = model("openai-codex", "gpt-5.6-sol");
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let childFallbackChains: Record<string, string[]> | undefined;
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let childFallbackChainKeys: string[] = [];
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let childModelRole: string | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains") as Record<string, string[]> | undefined;
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childFallbackChainKeys = Object.keys(childFallbackChains ?? {});
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childModelRole = options.settings?.getModelRoles()["subagent:single-model-configured-fallback"];
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
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await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "single-model-configured-fallback",
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modelOverride: "lm-studio/local-reviewer",
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settings: Settings.isolated({
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modelRoles: { "existing-local-role": "lm-studio/local-reviewer" },
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"retry.fallbackChains": {
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default: ["openai-codex/gpt-5.6-sol"],
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"existing-local-role": ["other-provider/other-model"],
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},
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}),
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [primary, fallback],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childModelRole).toBe("lm-studio/local-reviewer");
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expect(childFallbackChainKeys[0]).toBe("subagent:single-model-configured-fallback");
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expect(childFallbackChains?.["subagent:single-model-configured-fallback"]).toEqual(["openai-codex/gpt-5.6-sol"]);
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expect(childFallbackChains?.default).toEqual(["openai-codex/gpt-5.6-sol"]);
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expect(childFallbackChains?.["existing-local-role"]).toEqual(["other-provider/other-model"]);
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});
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it("inherits the aliased role's chain, not the default chain, for a role-alias subagent model", async () => {
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const fast = model("fast", "hy3");
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const slow = model("slow", "opus");
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let childFallbackChains: Record<string, string[]> | undefined;
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let childModelRole: string | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains") as Record<string, string[]> | undefined;
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childModelRole = options.settings?.getModelRoles()["subagent:role-alias-chain"];
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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// Mirrors what the spawn path hands the executor for the bundled scout
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// (`model: "@smol"`): patterns already expanded, role carried beside them.
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const agent: AgentDefinition = {
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name: "scout",
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description: "test",
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systemPrompt: "test",
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source: "bundled",
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model: ["@smol"],
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};
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await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "role-alias-chain",
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modelOverride: ["fast/hy3"],
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modelRole: "smol",
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settings: Settings.isolated({
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modelRoles: { default: "slow/opus", smol: "fast/hy3" },
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"retry.fallbackChains": {
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default: ["slow/opus-backup"],
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smol: ["fast/composer"],
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},
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}),
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [fast, slow],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childModelRole).toBe("fast/hy3");
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expect(childFallbackChains?.["subagent:role-alias-chain"]).toEqual(["fast/composer"]);
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expect(childFallbackChains?.default).toEqual(["slow/opus-backup"]);
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});
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it("inherits the aliased role's chain when the spawn path pre-expands the alias", async () => {
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// The real task flow (structured-subagent) resolves `@task` to a concrete
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// selector before calling the executor and carries the role identity in
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// `modelRole`. Re-deriving the role from the expanded patterns yields
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// nothing, so the child must route off `modelRole`, not `default`.
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const roleModel = model("task-provider", "sonnet");
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const defaultModel = model("default-provider", "opus");
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let childFallbackChains: Record<string, string[]> | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains") as Record<string, string[]> | undefined;
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const agent: AgentDefinition = {
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name: "task",
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description: "test",
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systemPrompt: "test",
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source: "bundled",
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model: ["@task"],
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};
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await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "pre-expanded-role",
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modelOverride: ["task-provider/sonnet"],
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modelRole: "task",
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settings: Settings.isolated({
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modelRoles: { default: "default-provider/opus", task: "task-provider/sonnet" },
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"retry.fallbackChains": {
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default: ["task-provider/sonnet", "default-provider/sol"],
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task: ["task-provider/sonnet"],
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},
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}),
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [roleModel, defaultModel],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childFallbackChains?.["subagent:pre-expanded-role"]).toEqual(["task-provider/sonnet"]);
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});
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it("inherits the default chain for a role alias whose role configures no chain", async () => {
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const fast = model("fast", "hy3");
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const slow = model("slow", "opus");
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let childFallbackChains: Record<string, string[]> | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains") as Record<string, string[]> | undefined;
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const agent: AgentDefinition = {
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name: "scout",
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description: "test",
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systemPrompt: "test",
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source: "bundled",
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model: ["@smol"],
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};
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await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "role-alias-default-chain",
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modelOverride: ["fast/hy3"],
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modelRole: "smol",
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settings: Settings.isolated({
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modelRoles: { default: "slow/opus", smol: "fast/hy3" },
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"retry.fallbackChains": { default: ["slow/opus-backup"] },
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}),
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [fast, slow],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childFallbackChains?.["subagent:role-alias-default-chain"]).toEqual(["slow/opus-backup"]);
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});
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it("does not inherit the default chain when multiple requested models collapse to one candidate", async () => {
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const primary = model("lm-studio", "local-reviewer");
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const fallback = model("openai-codex", "gpt-5.6-sol");
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let childFallbackChains: unknown;
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let childModelRole: string | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains");
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childModelRole = options.settings?.getModelRoles()["subagent:collapsed-multiple-models"];
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const settings = Settings.isolated({
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"retry.fallbackChains": {
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default: ["openai-codex/gpt-5.6-sol"],
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},
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});
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settings.setModelRole("default", "openai-codex/gpt-5.6-sol");
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const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
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await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "collapsed-multiple-models",
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modelOverride: ["missing/provider", "lm-studio/local-reviewer"],
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settings,
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [primary, fallback],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childModelRole).toBeUndefined();
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expect(childFallbackChains).toEqual({
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default: ["openai-codex/gpt-5.6-sol"],
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});
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});
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it("keeps a single local subagent model pinned without a configured fallback chain", async () => {
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const primary = model("lm-studio", "local-reviewer");
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const parent = model("openai-codex", "gpt-5.6-sol");
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let childModelRole: string | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childModelRole = options.settings?.getModelRoles()["subagent:single-model-no-fallback"];
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
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await runSubprocess({
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cwd: "/tmp",
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agent,
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task: "work",
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index: 0,
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id: "single-model-no-fallback",
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modelOverride: "lm-studio/local-reviewer",
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parentActiveModelPattern: "openai-codex/gpt-5.6-sol",
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settings: Settings.isolated(),
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [primary, parent],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childModelRole).toBeUndefined();
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});
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it("preserves malformed fallback configuration for child validation", async () => {
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const primary = model("lm-studio", "local-reviewer");
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let childFallbackChains: unknown;
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let childModelRole: string | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
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if (!options) throw new Error("Expected createAgentSession options");
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childFallbackChains = options.settings?.get("retry.fallbackChains");
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|
childModelRole = options.settings?.getModelRoles()["subagent:single-model-malformed-fallback"];
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return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
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});
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const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
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await runSubprocess({
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|
cwd: "/tmp",
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|
agent,
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task: "work",
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index: 0,
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id: "single-model-malformed-fallback",
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|
modelOverride: "lm-studio/local-reviewer",
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settings: Settings.isolated({ "retry.fallbackChains": null as never }),
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modelRegistry: {
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refresh: async () => {},
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getAvailable: () => [primary],
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getApiKey: async () => "test-key",
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} as never,
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enableLsp: false,
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});
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expect(childFallbackChains).toBeNull();
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expect(childModelRole).toBeUndefined();
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});
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it("leaves malformed default fallback entries for child validation", async () => {
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const primary = model("lm-studio", "local-reviewer");
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|
let childFallbackChains: unknown;
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let childModelRole: string | undefined;
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vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
|
|
if (!options) throw new Error("Expected createAgentSession options");
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|
childFallbackChains = options.settings?.get("retry.fallbackChains");
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|
childModelRole = options.settings?.getModelRoles()["subagent:single-model-invalid-default-fallback"];
|
|
return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
|
|
});
|
|
|
|
const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
|
|
await runSubprocess({
|
|
cwd: "/tmp",
|
|
agent,
|
|
task: "work",
|
|
index: 0,
|
|
id: "single-model-invalid-default-fallback",
|
|
modelOverride: "lm-studio/local-reviewer",
|
|
settings: Settings.isolated({ "retry.fallbackChains": { default: [123] } as never }),
|
|
modelRegistry: {
|
|
refresh: async () => {},
|
|
getAvailable: () => [primary],
|
|
getApiKey: async () => "test-key",
|
|
} as never,
|
|
enableLsp: false,
|
|
});
|
|
|
|
expect(childFallbackChains).toEqual({ default: [123] });
|
|
expect(childModelRole).toBeUndefined();
|
|
});
|
|
|
|
it("preserves upstream routing selectors in the child retry fallback chain", async () => {
|
|
const routedModel = model("openrouter", "z-ai/glm-4.7");
|
|
let childFallbackChains: Record<string, string[]> | undefined;
|
|
vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
|
|
if (!options) throw new Error("Expected createAgentSession options");
|
|
childFallbackChains = options.settings?.get("retry.fallbackChains") as Record<string, string[]> | undefined;
|
|
return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
|
|
});
|
|
|
|
const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
|
|
await runSubprocess({
|
|
cwd: "/tmp",
|
|
agent,
|
|
task: "work",
|
|
index: 0,
|
|
id: "issue-2750-routed",
|
|
modelOverride: ["openrouter/z-ai/glm-4.7@cerebras", "openrouter/z-ai/glm-4.7@fireworks"],
|
|
settings: Settings.isolated(),
|
|
modelRegistry: {
|
|
refresh: async () => {},
|
|
getAvailable: () => [routedModel],
|
|
getApiKey: async () => "test-key",
|
|
} as never,
|
|
enableLsp: false,
|
|
});
|
|
|
|
expect(childFallbackChains?.["subagent:issue-2750-routed"]).toEqual(["openrouter/z-ai/glm-4.7@fireworks"]);
|
|
});
|
|
|
|
it("defers unresolved explicit subagent model selectors instead of picking an available default", async () => {
|
|
const defaultModel = model("zai", "glm-5.2");
|
|
let childModel: Model | undefined;
|
|
let childModelPattern: unknown;
|
|
let childModelPatternAuthFallback: unknown;
|
|
let childModelPatternFallbackRole: unknown;
|
|
let childModelPatternDefaultFallbackChain: unknown;
|
|
vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async options => {
|
|
if (!options) throw new Error("Expected createAgentSession options");
|
|
childModel = options.model;
|
|
childModelPattern = options.modelPattern;
|
|
childModelPatternAuthFallback = options.modelPatternAuthFallback;
|
|
childModelPatternFallbackRole = options.modelPatternFallbackRole;
|
|
childModelPatternDefaultFallbackChain = options.modelPatternDefaultFallbackChain;
|
|
return { session: createYieldingSession(), extensionsResult: {}, setToolUIContext: () => {} } as never;
|
|
});
|
|
|
|
const agent: AgentDefinition = { name: "task", description: "test", systemPrompt: "test", source: "bundled" };
|
|
await runSubprocess({
|
|
cwd: "/tmp",
|
|
agent,
|
|
task: "work",
|
|
index: 0,
|
|
id: "issue-4421",
|
|
modelOverride: ["openai-codex/gpt-5.5:auto"],
|
|
parentActiveModelPattern: "openai-codex/gpt-5.5",
|
|
settings: Settings.isolated({
|
|
"retry.fallbackChains": {
|
|
default: ["openai-codex/gpt-5.6-sol"],
|
|
},
|
|
}),
|
|
modelRegistry: {
|
|
refresh: async () => {},
|
|
getAvailable: () => [defaultModel],
|
|
getApiKey: async () => "test-key",
|
|
} as never,
|
|
enableLsp: false,
|
|
});
|
|
|
|
expect(childModel).toBeUndefined();
|
|
expect(childModelPattern).toEqual(["openai-codex/gpt-5.5:auto"]);
|
|
expect(childModelPatternAuthFallback).toBe("openai-codex/gpt-5.5");
|
|
expect(childModelPatternFallbackRole).toBe("subagent:issue-4421");
|
|
expect(childModelPatternDefaultFallbackChain).toEqual(["openai-codex/gpt-5.6-sol"]);
|
|
});
|
|
});
|