reverse-engineering-anything/tests/boundary/filesystem/clientRegistrationStatus.test.ts

import { mkdir, writeFile } from "node:fs/promises";
import { join } from "node:path";

import { describe, expect, it } from "vitest";

import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";

import { readClientRegistrationStatuses } from "../../../src/application/ClientRegistrationStatus.js";
import { PRODUCT_IDENTITY } from "../../../src/identity.js";

describe("client registration status", () => {
  it("discovers Claude Code from its config file without a marker directory", async () => {
    const home = await createTestTempDirectory("rea-claude-config-only-");
    await writeFile(
      join(home, ".claude.json"),
      JSON.stringify({
        mcpServers: {
          rea: {
            command: "npx",
            args: ["-y", PRODUCT_IDENTITY.registrationPackageSpecifier, "mcp"],
          },
        },
      }),
    );

    const statuses = await readClientRegistrationStatuses(home, "/current/rea");

    expect(statuses).toEqual([
      expect.objectContaining({
        client: "claude_code",
        config_path: join(home, ".claude.json"),
        state: "aligned",
        remediation: null,
      }),
    ]);
  });

  it("distinguishes aligned, stale, missing, and invalid registrations", async () => {
    const home = await createTestTempDirectory("rea-registrations-");
    await Promise.all([
      mkdir(join(home, ".codex")),
      mkdir(join(home, ".cursor")),
      mkdir(join(home, ".gemini")),
      mkdir(join(home, ".claude")),
    ]);
    await writeFile(
      join(home, ".codex/config.toml"),
      `[mcp_servers.rea]\ncommand = "npx"\nargs = ["-y", "${PRODUCT_IDENTITY.registrationPackageSpecifier}", "mcp"]\nstartup_timeout_sec = 30\n`,
    );
    await writeFile(
      join(home, ".cursor/mcp.json"),
      JSON.stringify({
        mcpServers: {
          rea: { command: "/old/rea", args: ["mcp"], env: { SECRET: "x" } },
        },
      }),
    );
    await writeFile(join(home, ".gemini/settings.json"), "not-json");

    const statuses = await readClientRegistrationStatuses(home, "/current/rea");
    expect(statuses).toEqual(
      expect.arrayContaining([
        expect.objectContaining({
          client: "codex",
          state: "aligned",
          remediation: null,
        }),
        expect.objectContaining({
          client: "cursor",
          state: "stale",
          command: ["/old/rea", "mcp"],
          remediation: expect.any(String),
        }),
        expect.objectContaining({
          client: "gemini_cli",
          state: "invalid",
          command: [],
          remediation: expect.any(String),
        }),
        expect.objectContaining({
          client: "claude_code",
          state: "missing",
          command: [],
          remediation: expect.any(String),
        }),
      ]),
    );
    expect(JSON.stringify(statuses)).not.toContain("SECRET");
  });

  it.each([null, [], "invalid"])(
    "reports a malformed server table %j as invalid",
    async (servers) => {
      const home = await createTestTempDirectory("rea-registration-shape-");
      await mkdir(join(home, ".cursor"));
      await writeFile(
        join(home, ".cursor/mcp.json"),
        JSON.stringify({ mcpServers: servers }),
      );
      expect(await readClientRegistrationStatuses(home)).toEqual([
        expect.objectContaining({
          client: "cursor",
          state: "invalid",
          command: [],
        }),
      ]);
    },
  );

  it("reports an unversioned npx registration as stale", async () => {
    const home = await createTestTempDirectory("rea-registrations-");
    await mkdir(join(home, ".codex"));
    await writeFile(
      join(home, ".codex/config.toml"),
      '[mcp_servers.rea]\ncommand = "npx"\nargs = ["-y", "rea-agents", "mcp"]\n',
    );

    const statuses = await readClientRegistrationStatuses(home);

    expect(statuses).toEqual([
      expect.objectContaining({
        client: "codex",
        command: ["npx", "-y", "rea-agents", "mcp"],
        state: "stale",
      }),
    ]);
  });
});