import net from
"node:net";
import { describe, expect, it, vi } from
"vitest";
import { CHUTES_TOKEN_ENDPOINT, CHUTES_USERINFO_ENDPOINT } from
"../agents/chutes-oauth.js";
import { withFetchPreconnect } from
"../test-utils/fetch-mock.js";
import { loginChutes } from
"./chutes-oauth.js";
async
function getFreePort(): Promise<number> {
return await
new Promise((resolve, reject) => {
const server = net.createServer();
server.once(
"error", reject);
server.listen(
0,
"127.0.0.1", () => {
const address = server.address();
if (!address ||
typeof address ===
"string") {
server.close(() => reject(
new Error(
"No TCP address")));
return;
}
const port = address.port;
server.close((err) => (err ? reject(err) : resolve(port)));
});
});
}
const urlToString = (url: Request | URL | string): string => {
if (
typeof url ===
"string") {
return url;
}
return "url" in url ? url.url : String(url);
};
function createOAuthFetchFn(params: {
accessToken: string;
refreshToken: string;
username: string;
passthrough?:
boolean;
}) {
return withFetchPreconnect(async (input: RequestInfo | URL, init?: RequestInit) => {
const url = urlToString(input);
if (url === CHUTES_TOKEN_ENDPOINT) {
return new Response(
JSON.stringify({
access_token: params.accessToken,
refresh_token: params.refreshToken,
expires_in:
3600,
}),
{ status:
200, headers: {
"Content-Type":
"application/json" } },
);
}
if (url === CHUTES_USERINFO_ENDPOINT) {
return new Response(JSON.stringify({ username: params.username }), {
status:
200,
headers: {
"Content-Type":
"application/json" },
});
}
if (params.passthrough) {
return fetch(input, init);
}
return new Response(
"not found", { status:
404 });
});
}
describe(
"loginChutes", () => {
it(
"captures local redirect and exchanges code for tokens", async () => {
const port = await getFreePort();
const redirectUri = `http:
//127.0.0.1:${port}/oauth-callback`;
const fetchFn = createOAuthFetchFn({
accessToken:
"at_local",
refreshToken:
"rt_local",
username:
"local-user",
passthrough:
true,
});
const onPrompt = vi.fn(async () => {
throw new Error(
"onPrompt should not be called for local callback");
});
const creds = await loginChutes({
app: { clientId:
"cid_test", redirectUri, scopes: [
"openid"] },
onAuth: async ({ url }) => {
const state =
new URL(url).searchParams.get(
"state");
expect(state).toBeTruthy();
await fetch(`${redirectUri}?code=code_local&state=${state}`);
},
onPrompt,
fetchFn,
});
expect(onPrompt).not.toHaveBeenCalled();
expect(creds.access).toBe(
"at_local");
expect(creds.refresh).toBe(
"rt_local");
expect(creds.email).toBe(
"local-user");
});
it(
"supports manual flow with pasted redirect URL", async () => {
const fetchFn = createOAuthFetchFn({
accessToken:
"at_manual",
refreshToken:
"rt_manual",
username:
"manual-user",
});
let capturedState: string |
null =
null;
const creds = await loginChutes({
app: {
clientId:
"cid_test",
redirectUri:
"http://127.0.0.1:1456/oauth-callback",
scopes: [
"openid"],
},
manual:
true,
onAuth: async ({ url }) => {
capturedState =
new URL(url).searchParams.get(
"state");
},
onPrompt: async () => {
if (!capturedState) {
throw new Error(
"missing state");
}
return `?code=code_manual&state=${capturedState}`;
},
fetchFn,
});
expect(creds.access).toBe(
"at_manual");
expect(creds.refresh).toBe(
"rt_manual");
expect(creds.email).toBe(
"manual-user");
});
it(
"does not reuse code_verifier as state", async () => {
const fetchFn = createOAuthFetchFn({
accessToken:
"at_manual",
refreshToken:
"rt_manual",
username:
"manual-user",
});
const createPkce = () => ({
verifier:
"verifier_123",
challenge:
"chal_123",
});
const createState = () =>
"state_456";
const creds = await loginChutes({
app: {
clientId:
"cid_test",
redirectUri:
"http://127.0.0.1:1456/oauth-callback",
scopes: [
"openid"],
},
manual:
true,
createPkce,
createState,
onAuth: async ({ url }) => {
const parsed =
new URL(url);
expect(parsed.searchParams.get(
"state")).toBe(
"state_456");
expect(parsed.searchParams.get(
"state")).not.toBe(
"verifier_123");
},
onPrompt: async () =>
"?code=code_manual&state=state_456",
fetchFn,
});
expect(creds.access).toBe(
"at_manual");
});
it(
"rejects pasted redirect URLs missing state", async () => {
const fetchFn = withFetchPreconnect(async () =>
new Response(
"not found", { status:
404 }));
await expect(
loginChutes({
app: {
clientId:
"cid_test",
redirectUri:
"http://127.0.0.1:1456/oauth-callback",
scopes: [
"openid"],
},
manual:
true,
createPkce: () => ({ verifier:
"verifier_123", challenge:
"chal_123" }),
createState: () =>
"state_456",
onAuth: async () => {},
onPrompt: async () =>
"http://127.0.0.1:1456/oauth-callback?code=code_only",
fetchFn,
}),
).rejects.toThrow(
"Missing 'state' parameter");
});
});