OmniRoute/tests/unit/fix-bare-model-precedence.test.ts

import test from "node:test";
import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";

const TEST_DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-bare-precedence-"));
process.env.DATA_DIR = TEST_DATA_DIR;

const core = await import("../../src/lib/db/core.ts");
const providersDb = await import("../../src/lib/db/providers.ts");
const { CODEX_NATIVE_UNPREFIXED_MODELS, getModelInfoCore } = await import(
  "../../open-sse/services/model.ts"
);

// #FIX: bare Codex-default model ids must route to the `codex` provider
// (chatgpt.com OAuth) when no provider prefix is supplied, even when other
// providers that also catalog the id (e.g. `agentrouter`, `openai`) are
// active. The Codex cookie quota is the source of truth — auto-fanning to
// other providers silently breaks the "default" experience.
//
// #9447 bounded that precedence: it may only PREEMPT another provider when a
// codex connection is actually ACTIVE. These cases therefore seed one first.
// Without that bound, an OpenAI-only install had bare `gpt-5.5` sent to codex
// and failed with "no active credentials for provider: codex" on a model
// OpenAI serves. Ids that no other provider catalogs (the tier variants,
// `codex-auto-review`) still resolve to codex with no connection at all —
// there is no alternative to preempt — so those cases seed nothing.
async function seedActiveCodexConnection() {
  await providersDb.createProviderConnection({
    provider: "codex",
    authType: "oauth",
    email: "codex@example.com",
    providerSpecificData: { workspaceId: "ws-precedence" },
  });
}

test.after(() => {
  core.resetDbInstance();
  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true, maxRetries: 5, retryDelay: 100 });
});

test("CODEX_NATIVE_UNPREFIXED_MODELS includes gpt-5.6-sol tier set", () => {
  for (const id of [
    "gpt-5.6-sol",
    "gpt-5.6-sol-max",
    "gpt-5.6-sol-xhigh",
    "gpt-5.6-sol-high",
    "gpt-5.6-sol-medium",
    "gpt-5.6-sol-low",
    "gpt-5.6-terra",
    "gpt-5.6-terra-xhigh",
    "gpt-5.6-luna",
    "gpt-5.6-luna-xhigh",
    "gpt-5.5",
    "gpt-5.5-xhigh",
    "gpt-5.5-medium",
    "gpt-5.5-low",
    "gpt-5.3-codex-spark",
    "codex-auto-review",
  ]) {
    assert.equal(
      CODEX_NATIVE_UNPREFIXED_MODELS.has(id),
      true,
      `expected CODEX_NATIVE_UNPREFIXED_MODELS to include ${id}`
    );
  }
});

test("bare gpt-5.6-sol resolves to codex (provider native prefix wins)", async () => {
  await seedActiveCodexConnection();
  const info = await getModelInfoCore("gpt-5.6-sol", null);
  assert.equal(info.provider, "codex", "bare gpt-5.6-sol must route to codex");
  assert.equal(info.model, "gpt-5.6-sol");
});

test("bare gpt-5.5 resolves to codex", async () => {
  const info = await getModelInfoCore("gpt-5.5", null);
  assert.equal(info.provider, "codex");
  assert.equal(info.model, "gpt-5.5");
});

test("bare gpt-5.6-sol-max resolves to codex", async () => {
  const info = await getModelInfoCore("gpt-5.6-sol-max", null);
  assert.equal(info.provider, "codex");
  assert.equal(info.model, "gpt-5.6-sol-max");
});

test("agentrouter/gpt-5.6-sol (explicit prefix) routes to agentrouter", async () => {
  const info = await getModelInfoCore("agentrouter/gpt-5.6-sol", null);
  assert.equal(info.provider, "agentrouter");
  assert.equal(info.model, "gpt-5.6-sol");
});

test("openai/gpt-5.6-sol (explicit prefix) routes to openai", async () => {
  const info = await getModelInfoCore("openai/gpt-5.6-sol", null);
  assert.equal(info.provider, "openai");
  assert.equal(info.model, "gpt-5.6-sol");
});

test("codex-auto-review remains in the precedence set (regression guard)", async () => {
  // Pre-fix regression: removing/replacing the set would silently break the
  // `/review` codepath that ships with the Codex CLI.
  assert.equal(CODEX_NATIVE_UNPREFIXED_MODELS.has("codex-auto-review"), true);
  const info = await getModelInfoCore("codex-auto-review", null);
  assert.equal(info.provider, "codex");
});