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const mocked = vi.hoisted(() => ({
ensureProxyUrl: vi.fn(async () => "http://127.0.0.1:8787"),
ensureProxyStarted: vi.fn(),
getProxyUrl: vi.fn(() => null as string | null),
createHeadroomRetrieveTool: vi.fn(({ proxyUrl }: { proxyUrl: string }) => ({ proxyUrl })),
}));
const proxyReadyListeners: Array<(proxyUrl: string) => void | Promise<void>> = [];
vi.mock("../src/engine.js", () => ({
HeadroomContextEngine: class {
ensureProxyUrl = mocked.ensureProxyUrl;
ensureProxyStarted = mocked.ensureProxyStarted;
getProxyUrl = mocked.getProxyUrl;
onProxyReady(listener: (proxyUrl: string) => void | Promise<void>) {
proxyReadyListeners.push(listener);
return () => {};
}
},
}));
vi.mock("../src/tools/headroom-retrieve.js", () => ({
createHeadroomRetrieveTool: mocked.createHeadroomRetrieveTool,
}));
import headroomPlugin from "../src/plugin/index.js";
afterEach(() => {
mocked.ensureProxyUrl.mockClear();
mocked.ensureProxyStarted.mockClear();
mocked.getProxyUrl.mockClear();
mocked.createHeadroomRetrieveTool.mockClear();
proxyReadyListeners.length = 0;
});
describe("headroomPlugin runtime routing", () => {
it("routes configured providers in memory once the proxy becomes available", async () => {
const gatewayHandlers = new Map<string, () => Promise<void>>();
const writeConfigFile = vi.fn();
const loadConfig = vi.fn(() => ({
models: {
providers: {
anthropic: {
api: "anthropic-messages",
},
},
},
}));
const api: any = {
config: {
plugins: {
entries: {
headroom: {
config: {
gatewayProviderIds: ["codex", "claude", "copilot", "gemini", "openrouter"],
},
},
},
},
models: {
providers: {
anthropic: {
api: "anthropic-messages",
baseUrl: "https://api.anthropic.com",
},
"github-copilot": {
baseUrl: "https://api.githubcopilot.com/v1",
},
google: {
baseUrl: "https://generativelanguage.googleapis.com/v1beta",
},
openrouter: {
baseUrl: "https://openrouter.ai/api/v1",
},
},
},
},
logger: {
info: vi.fn(),
warn: vi.fn(),
error: vi.fn(),
debug: vi.fn(),
},
registerContextEngine: vi.fn(),
registerTool: vi.fn(),
on: vi.fn((event: string, handler: () => Promise<void>) => {
gatewayHandlers.set(event, handler);
}),
runtime: {
config: {
loadConfig,
writeConfigFile,
},
},
};
headroomPlugin(api);
await Promise.resolve();
expect(mocked.ensureProxyUrl).not.toHaveBeenCalled();
expect(mocked.ensureProxyStarted).toHaveBeenCalledTimes(1);
expect(writeConfigFile).not.toHaveBeenCalled();
expect(loadConfig).not.toHaveBeenCalled();
expect(api.config.models.providers["openai-codex"]).toBeUndefined();
await proxyReadyListeners[0]?.("http://127.0.0.1:8787");
expect(api.config.models.providers["openai-codex"]).toEqual({
baseUrl: "http://127.0.0.1:8787/backend-api",
models: [],
});
expect(api.config.models.providers.anthropic).toEqual({
api: "anthropic-messages",
baseUrl: "http://127.0.0.1:8787",
models: [],
});
expect(api.config.models.providers["github-copilot"]).toEqual({
baseUrl: "http://127.0.0.1:8787/v1",
models: [],
});
expect(api.config.models.providers.google).toEqual({
baseUrl: "http://127.0.0.1:8787/v1beta",
models: [],
});
expect(api.config.models.providers.openrouter).toEqual({
baseUrl: "http://127.0.0.1:8787/api/v1",
models: [],
});
const gatewayStart = gatewayHandlers.get("gateway_start");
expect(gatewayStart).toBeTypeOf("function");
await gatewayStart?.();
expect(mocked.ensureProxyStarted).toHaveBeenCalledTimes(2);
expect(writeConfigFile).not.toHaveBeenCalled();
expect(loadConfig).not.toHaveBeenCalled();
expect(mocked.ensureProxyUrl).not.toHaveBeenCalled();
});
});
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