from __future__ import annotations

import contextlib
import json
import os
import subprocess
import threading
import time
import urllib.request
from pathlib import Path
from typing import Iterable

import pytest

from demo import run_demo_tests


def test_suite_runtime_root_uses_demo_and_relative_path(tmp_path: Path) -> None:
    demo_a = tmp_path / "demo-a"
    demo_b = tmp_path / "demo-b"
    for demo in (demo_a, demo_b):
        tests_dir = demo / "nested" / "tests"
        tests_dir.mkdir(parents=True)

    suite_a = run_demo_tests._suite_runtime_root(
        tmp_path, demo_a, demo_a / "nested" / "tests", runner="python"
    )
    suite_b = run_demo_tests._suite_runtime_root(
        tmp_path, demo_b, demo_b / "nested" / "tests", runner="npm"
    )

    assert suite_a != suite_b
    assert suite_a.relative_to(tmp_path) == Path("demo-a/nested/tests/python")
    assert suite_b.relative_to(tmp_path) == Path("demo-b/nested/tests/npm")


def test_main_respects_runtime_dir_option(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)
    test_file = tests_dir / "test_ok.py"
    test_file.write_text("def test_ok():\n    assert True\n")

    runtime_dir = tmp_path / "runtime"

    exit_code = run_demo_tests.main(["--runtime-dir", str(runtime_dir)], demo_root=demo_root)

    assert exit_code == 0
    sandbox = runtime_dir / "example" / "tests" / "python" / "orchestrator"
    assert sandbox.exists()
    assert (sandbox / "agents").exists()


def test_main_clears_existing_runtime_dir(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)
    (tests_dir / "test_ok.py").write_text("def test_ok():\n    assert True\n")

    runtime_dir = tmp_path / "runtime"
    stale_artifact = (
        runtime_dir / "example" / "tests" / "python" / "orchestrator" / "checkpoint.json"
    )
    stale_artifact.parent.mkdir(parents=True)
    stale_artifact.write_text("stale checkpoint")

    exit_code = run_demo_tests.main(["--runtime-dir", str(runtime_dir)], demo_root=demo_root)

    assert exit_code == 0
    assert not stale_artifact.exists()


def test_max_workers_option_validates_positive_values() -> None:
    args = run_demo_tests._parse_args(["--max-workers", "3"])
    assert args.max_workers == 3

    with pytest.raises(SystemExit):
        run_demo_tests._parse_args(["--max-workers", "0"])


def test_parallel_runs_use_multiple_threads(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    suites: list[run_demo_tests.Suite] = []
    for name in ("alpha", "beta"):
        demo_dir = demo_root / name
        tests_dir = demo_dir / "tests"
        tests_dir.mkdir(parents=True)
        suites.append(
            run_demo_tests.Suite(
                demo_root=demo_dir,
                tests_dir=tests_dir,
                runner="python",
            )
        )

    monkeypatch.setattr(
        run_demo_tests,
        "_discover_tests",
        lambda *_args, **_kwargs: suites,
    )

    threads: list[str] = []

    def fake_run_suite(
        suite: run_demo_tests.Suite,
        env_overrides: dict[str, str],
        *,
        allow_empty: bool = False,
        timeout: float | None = None,
        capture_output: bool = False,
    ) -> tuple[int, str | None]:
        threads.append(threading.current_thread().name)
        time.sleep(0.05)
        return 0, "captured" if capture_output else None

    monkeypatch.setattr(run_demo_tests, "_run_suite", fake_run_suite)

    exit_code = run_demo_tests.main(["--max-workers", "2"], demo_root=demo_root)

    assert exit_code == 0
    assert len(set(threads)) >= 2


def test_list_mode_does_not_create_runtime_artifacts(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)
    (tests_dir / "test_ok.py").write_text("def test_ok():\n    assert True\n")

    runtime_dir = tmp_path / "runtime"

    exit_code = run_demo_tests.main(
        ["--list", "--runtime-dir", str(runtime_dir)], demo_root=demo_root
    )

    assert exit_code == 0
    assert not runtime_dir.exists()


def test_top_level_tests_directory_is_discovered(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "tests"
    tests_dir.mkdir(parents=True)
    (tests_dir / "test_ok.py").write_text("def test_ok():\n    assert True\n")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=tests_dir,
            tests_dir=tests_dir,
            runner="python",
        )
    ]


def test_include_filter_matches_relative_paths(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    alpha_tests = demo_root / "alpha" / "tests"
    beta_tests = demo_root / "beta" / "nested" / "tests"
    alpha_tests.mkdir(parents=True)
    beta_tests.mkdir(parents=True)
    (alpha_tests / "test_alpha.py").write_text("def test_alpha():\n    assert True\n")
    (beta_tests / "test_beta.py").write_text("def test_beta():\n    assert True\n")

    suites = list(
        run_demo_tests._discover_tests(
            demo_root, include={"beta/nested", "does-not-match"}
        )
    )

    assert suites == [
        run_demo_tests.Suite(
            demo_root=demo_root / "beta",
            tests_dir=beta_tests,
            runner="python",
        )
    ]


def test_demo_filter_normalizes_comma_separated_tokens() -> None:
    include = run_demo_tests._normalize_include_filters([
        " Alpha ,beta/nested ",
        " ,gamma",
    ])

    assert include == {"alpha", "beta/nested", "gamma"}


def test_demo_filter_returns_none_when_empty() -> None:
    assert run_demo_tests._normalize_include_filters([]) is None
    assert run_demo_tests._normalize_include_filters([" , "]) is None


def test_playwright_dep_check_requires_passwordless_sudo(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(run_demo_tests.sys, "platform", "linux")
    monkeypatch.setattr(run_demo_tests.os, "geteuid", lambda: 1000)

    def fake_which(name: str) -> str | None:
        return f"/usr/bin/{name}"

    monkeypatch.setattr(run_demo_tests.shutil, "which", fake_which)
    calls: list[list[str]] = []

    def fake_run(cmd: list[str], **_: object) -> subprocess.CompletedProcess[str]:
        calls.append(cmd)
        return subprocess.CompletedProcess(cmd, 1)

    monkeypatch.setattr(run_demo_tests.subprocess, "run", fake_run)

    assert run_demo_tests._can_install_playwright_deps() is False
    assert calls == [["/usr/bin/sudo", "-n", "true"]]


def test_playwright_dep_check_accepts_root(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(run_demo_tests.sys, "platform", "linux")
    monkeypatch.setattr(run_demo_tests.os, "geteuid", lambda: 0)
    monkeypatch.setattr(run_demo_tests.shutil, "which", lambda name: f"/usr/bin/{name}")

    assert run_demo_tests._can_install_playwright_deps() is True


def test_playwright_download_probe_accepts_any_resolvable_host(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    hosts = run_demo_tests._PLAYWRIGHT_DOWNLOAD_HOSTS
    calls: list[str] = []

    def fake_getaddrinfo(host: str, *_args: object, **_kwargs: object) -> list[object]:
        calls.append(host)
        if host == hosts[0]:
            raise OSError("simulated DNS failure")
        return [object()]

    monkeypatch.setattr(run_demo_tests.socket, "getaddrinfo", fake_getaddrinfo)

    assert run_demo_tests._playwright_downloads_reachable() is True
    assert calls == [hosts[0], hosts[1]]


def test_playwright_download_probe_requires_any_resolution(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    hosts = run_demo_tests._PLAYWRIGHT_DOWNLOAD_HOSTS
    calls: list[str] = []

    def fake_getaddrinfo(host: str, *_args: object, **_kwargs: object) -> list[object]:
        calls.append(host)
        raise OSError("simulated DNS failure")

    monkeypatch.setattr(run_demo_tests.socket, "getaddrinfo", fake_getaddrinfo)

    assert run_demo_tests._playwright_downloads_reachable() is False
    assert calls == list(hosts)


def test_playwright_dep_readiness_detects_installed_libs(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    libs = [
        tmp_path / "libnss3.so",
        tmp_path / "libasound.so.2",
        tmp_path / "libatk-1.0.so.0",
        tmp_path / "libgtk-3.so.0",
    ]
    for lib in libs:
        lib.write_text("placeholder")

    monkeypatch.setattr(run_demo_tests, "_PLAYWRIGHT_LIB_PATHS", tuple(libs))
    monkeypatch.setattr(run_demo_tests.shutil, "which", lambda name: "/usr/bin/xvfb")
    monkeypatch.setattr(run_demo_tests.sys, "platform", "linux")

    assert run_demo_tests._playwright_system_deps_ready() is True


def test_playwright_dep_readiness_accepts_ctypes_resolved_libs(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    libs = [
        tmp_path / "libnss3.so",
        tmp_path / "libasound.so.2",
        tmp_path / "libgtk-3.so.0",
    ]

    def fake_find_library(name: str) -> str | None:
        if name in {"nss3", "asound", "gtk-3"}:
            return f"lib{name}.so"
        return None

    monkeypatch.setattr(run_demo_tests, "_PLAYWRIGHT_LIB_PATHS", tuple(libs))
    monkeypatch.setattr(run_demo_tests.shutil, "which", lambda name: "/usr/bin/xvfb")
    monkeypatch.setattr(run_demo_tests.sys, "platform", "linux")
    monkeypatch.setattr(run_demo_tests.ctypes.util, "find_library", fake_find_library)

    assert run_demo_tests._playwright_system_deps_ready() is True


def test_playwright_dep_readiness_requires_xvfb(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    libs = [tmp_path / "libnss3.so"]
    libs[0].write_text("placeholder")

    monkeypatch.setattr(run_demo_tests, "_PLAYWRIGHT_LIB_PATHS", tuple(libs))
    monkeypatch.setattr(run_demo_tests.shutil, "which", lambda name: None)
    monkeypatch.setattr(run_demo_tests.sys, "platform", "linux")

    assert run_demo_tests._playwright_system_deps_ready() is False


def test_playwright_cache_uses_shared_directory(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    package_root = tmp_path / "phase8"
    tests_dir = package_root / "tests"
    tests_dir.mkdir(parents=True)
    (package_root / "package.json").write_text(
        json.dumps({"scripts": {"test": "playwright test"}, "devDependencies": {"@playwright/test": "1.0.0"}})
    )

    suite = run_demo_tests.Suite(demo_root=package_root, tests_dir=tests_dir, runner="npm")
    shared_cache = tmp_path / "shared-playwright-cache"
    monkeypatch.setenv("DEMO_PLAYWRIGHT_CACHE", str(shared_cache))

    captured_env: dict[str, str] = {}

    def fake_run(cmd: list[str], **kwargs: object) -> subprocess.CompletedProcess[str]:
        captured_env.update(kwargs.get("env", {}))
        return subprocess.CompletedProcess(cmd, 0)

    monkeypatch.setattr(run_demo_tests.subprocess, "run", fake_run)

    exit_code, _ = run_demo_tests._run_suite(
        suite, run_demo_tests._configure_runtime_env(tmp_path), capture_output=True
    )

    assert exit_code == 0
    assert captured_env["PLAYWRIGHT_BROWSERS_PATH"] == str(shared_cache)
    assert shared_cache.exists()


def test_top_level_tests_pythonpath_includes_demo_root(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "tests"
    tests_dir.mkdir(parents=True)

    pythonpath = run_demo_tests._build_pythonpath(tests_dir)

    # Ensure the parent ``demo`` directory is present so imports like ``demo``
    # or ``demo.run_demo_tests`` succeed when running the meta-suite in
    # isolation.
    assert str(demo_root.resolve()) in pythonpath.split(os.pathsep)


def test_discovers_node_suite_when_python_tests_absent(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "node-demo"
    tests_dir = project_dir / "tests"
    tests_dir.mkdir(parents=True)
    (project_dir / "package.json").write_text("{}\n")
    (project_dir / "package-lock.json").write_text("{}\n")
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=project_dir, tests_dir=tests_dir, runner="npm"
        )
    ]


def test_discovers_foundry_suite(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "foundry-demo"
    tests_dir = project_dir / "test"
    tests_dir.mkdir(parents=True)

    (project_dir / "foundry.toml").write_text("[profile.default]\n")
    (tests_dir / "Alpha.t.sol").write_text("// solidity test\n")

    monkeypatch.setattr(run_demo_tests.shutil, "which", lambda name: "/usr/bin/forge")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=project_dir, tests_dir=tests_dir, runner="forge"
        )
    ]


def test_foundry_installation_is_attempted_when_missing(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "foundry-demo"
    tests_dir = project_dir / "test"
    tests_dir.mkdir(parents=True)

    (project_dir / "foundry.toml").write_text("[profile.default]\n")
    (tests_dir / "Alpha.t.sol").write_text("// solidity test\n")

    # Pretend forge is absent until the installer runs.
    state = {"installed": False}

    def fake_forge_exists() -> bool:
        return state["installed"]

    installs: list[dict[str, str]] = []

    def fake_install(env: dict[str, str]) -> bool:
        installs.append(env)
        state["installed"] = True
        return True

    monkeypatch.setattr(run_demo_tests, "_forge_exists", fake_forge_exists)
    monkeypatch.setattr(run_demo_tests, "_install_foundry", fake_install)
    run_demo_tests._foundry_install_attempted = False

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert installs, "installer should be invoked when forge is missing"
    assert suites == [
        run_demo_tests.Suite(
            demo_root=project_dir, tests_dir=tests_dir, runner="forge"
        )
    ]
    run_demo_tests._foundry_install_attempted = False


def test_foundry_installation_times_out_cleanly(
    monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
) -> None:
    monkeypatch.setattr(urllib.request, "urlopen", lambda *a, **k: contextlib.nullcontext())

    def _timeout(*args: object, **kwargs: object) -> object:
        raise subprocess.TimeoutExpired(cmd=args[0] if args else [], timeout=1)

    monkeypatch.setattr(subprocess, "run", _timeout)

    assert run_demo_tests._install_foundry({}) is False
    captured = capsys.readouterr().out
    assert "Timed out" in captured


def test_foundry_installation_skips_when_bootstrap_unreachable(
    monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
) -> None:
    def _failing_probe(*args: object, **kwargs: object) -> object:
        raise OSError("network unreachable")

    monkeypatch.setattr(urllib.request, "urlopen", _failing_probe)
    invoked: list[list[str]] = []
    monkeypatch.setattr(subprocess, "run", lambda *a, **k: invoked.append(a) or None)

    assert run_demo_tests._install_foundry({}) is False
    captured = capsys.readouterr().out
    assert "bootstrap endpoint is unreachable" in captured
    assert invoked == []


def test_foundry_installation_can_be_disabled(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "foundry-demo"
    tests_dir = project_dir / "test"
    tests_dir.mkdir(parents=True)

    (project_dir / "foundry.toml").write_text("[profile.default]\n")
    (tests_dir / "Alpha.t.sol").write_text("// solidity test\n")

    monkeypatch.setattr(run_demo_tests, "_forge_exists", lambda: False)
    installs: list[dict[str, str]] = []
    monkeypatch.setattr(
        run_demo_tests, "_install_foundry", lambda env: installs.append(env) or True
    )
    run_demo_tests._foundry_install_attempted = False
    monkeypatch.setenv("DEMO_INSTALL_FOUNDRY", "0")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert not installs, "installer should not run when explicitly disabled"
    assert suites == []
    run_demo_tests._foundry_install_attempted = False


def test_discovers_pnpm_suite(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "pnpm-demo"
    tests_dir = project_dir / "__tests__"
    tests_dir.mkdir(parents=True)

    (project_dir / "package.json").write_text('{"packageManager": "pnpm@9.0.0"}\n')
    (project_dir / "pnpm-lock.yaml").write_text("lockfileVersion: 9.0\n")
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=project_dir, tests_dir=tests_dir, runner="pnpm"
        )
    ]


def test_deduplicates_node_packages(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    scripts_tests = demo_root / "scripts" / "__tests__"
    python_tests = demo_root / "tests"
    scripts_tests.mkdir(parents=True)
    python_tests.mkdir(parents=True)

    (demo_root / "package.json").write_text(
        '{"name": "phase-8", "scripts": {"test": "npm test"}}'
    )
    (demo_root / "package-lock.json").write_text("{}\n")

    (scripts_tests / "orchestrator.test.ts").write_text(
        "describe('node suite', () => { test('ok', () => {}); });\n"
    )
    (python_tests / "phase8.spec.ts").write_text(
        "describe('e2e', () => { test('ok', () => {}); });\n"
    )
    (python_tests / "test_manifest.py").write_text(
        "def test_manifest():\n    assert True\n"
    )

    suites = list(run_demo_tests._discover_tests(demo_root))

    python_suites = [
        suite for suite in suites if suite.runner == "python"
    ]
    node_suites = [
        suite for suite in suites if suite.runner == "npm"
    ]

    assert python_suites == [
        run_demo_tests.Suite(
            demo_root=python_tests,
            tests_dir=python_tests,
            runner="python",
        )
    ]
    assert node_suites == [
        run_demo_tests.Suite(
            demo_root=demo_root,
            tests_dir=scripts_tests,
            runner="npm",
        )
    ]


def test_pnpm_workspace_root_is_skipped(
    tmp_path: Path, capsys: pytest.CaptureFixture
) -> None:
    demo_root = tmp_path / "demo"
    workspace = demo_root / "workspace"
    tests_dir = workspace / "tests"
    tests_dir.mkdir(parents=True)

    (workspace / "package.json").write_text('{"packageManager": "pnpm@9.0.0"}\n')
    (workspace / "pnpm-lock.yaml").write_text("lockfileVersion: 9.0\n")
    (workspace / "pnpm-workspace.yaml").write_text("packages:\n  - packages/*\n")
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == []
    output = capsys.readouterr().out.lower()
    assert "workspace root" in output


def test_pnpm_workspace_root_without_node_tests_is_ignored(
    tmp_path: Path, capsys: pytest.CaptureFixture, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    workspace = demo_root / "workspace"
    tests_dir = workspace / "test"
    tests_dir.mkdir(parents=True)

    (workspace / "package.json").write_text('{"packageManager": "pnpm@9.0.0"}\n')
    (workspace / "pnpm-lock.yaml").write_text("lockfileVersion: 9.0\n")
    (workspace / "pnpm-workspace.yaml").write_text("packages:\n  - packages/*\n")
    (workspace / "foundry.toml").write_text("[profile.default]\n")
    (tests_dir / "Alpha.t.sol").write_text("// solidity test\n")

    monkeypatch.setattr(run_demo_tests.shutil, "which", lambda name: f"/usr/bin/{name}")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=workspace, tests_dir=tests_dir, runner="forge"
        )
    ]
    output = capsys.readouterr().out.lower()
    assert "workspace root" not in output


def test_node_suite_anchors_to_nearest_package(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "node-demo"
    nested_project = project_dir / "v2"
    tests_dir = nested_project / "tests"
    tests_dir.mkdir(parents=True)

    (nested_project / "package.json").write_text("{}\n")
    (nested_project / "package-lock.json").write_text("{}\n")
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=nested_project, tests_dir=tests_dir, runner="npm"
        )
    ]


def test_python_and_node_suites_can_share_tests_dir(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "shared" / "tests"
    tests_dir.mkdir(parents=True)

    (demo_root / "package.json").write_text("{}\n")
    (demo_root / "package-lock.json").write_text("{}\n")
    (tests_dir / "test_alpha.py").write_text("def test_alpha():\n    assert True\n")
    (tests_dir / "alpha.test.ts").write_text("describe('ok', () => {});\n")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=demo_root / "shared",
            tests_dir=tests_dir,
            runner="python",
        ),
        run_demo_tests.Suite(
            demo_root=demo_root,
            tests_dir=tests_dir,
            runner="npm",
        ),
    ]


def test_discovers_package_above_nested_tests_dir(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "node-demo"
    nested_tests = project_dir / "subsystem" / "__tests__"
    nested_tests.mkdir(parents=True)

    (project_dir / "package.json").write_text("{}\n")
    (project_dir / "package-lock.json").write_text("{}\n")
    (nested_tests / "ledger.test.ts").write_text("describe('ok', () => {});")

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=project_dir,
            tests_dir=nested_tests,
            runner="npm",
        )
    ]


def test_prisma_client_generation_is_triggered(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "node-demo"
    tests_dir = project_dir / "tests"
    tests_dir.mkdir(parents=True)

    package_json = {
        "dependencies": {"@prisma/client": "latest"},
        "packageManager": "npm@9.0.0",
    }
    (project_dir / "package.json").write_text(json.dumps(package_json))
    (project_dir / "package-lock.json").write_text("{}\n")
    (project_dir / "node_modules").mkdir()
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    calls: list[tuple[Path, dict[str, object] | None]] = []
    monkeypatch.setattr(run_demo_tests, "_has_prisma_client", lambda _: False)
    monkeypatch.setattr(
        run_demo_tests,
        "_ensure_prisma_client",
        lambda root, meta: calls.append((root, meta)) or True,
    )

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert suites == [
        run_demo_tests.Suite(
            demo_root=project_dir,
            tests_dir=tests_dir,
            runner="npm",
        )
    ]
    assert calls == [(project_dir, package_json)]


def test_prisma_client_generation_is_skipped_for_list_mode(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    project_dir = demo_root / "node-demo"
    tests_dir = project_dir / "tests"
    tests_dir.mkdir(parents=True)

    package_json = {
        "dependencies": {"@prisma/client": "latest"},
        "packageManager": "npm@9.0.0",
    }
    (project_dir / "package.json").write_text(json.dumps(package_json))
    (project_dir / "package-lock.json").write_text("{}\n")
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    monkeypatch.setattr(run_demo_tests, "_has_prisma_client", lambda _: False)
    monkeypatch.setattr(
        run_demo_tests,
        "_ensure_prisma_client",
        lambda *_: (_ for _ in ()).throw(
            AssertionError("Prisma client generation should not run in --list mode")
        ),
    )

    exit_code = run_demo_tests.main(["--list"], demo_root=demo_root)

    assert exit_code == 0


def test_prisma_client_detection_requires_generated_artifacts(tmp_path: Path) -> None:
    project_dir = tmp_path / "node-demo"
    runtime = project_dir / "node_modules" / "@prisma" / "client" / "runtime"
    runtime.mkdir(parents=True)

    assert run_demo_tests._has_prisma_client(project_dir) is False

    generated = project_dir / "node_modules" / ".prisma" / "client"
    generated.mkdir(parents=True)

    assert run_demo_tests._has_prisma_client(project_dir) is True


def test_prisma_client_generation_is_cached_per_package(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "demo"
    package_root = demo_root / "workspace"
    tests_a = package_root / "alpha" / "tests"
    tests_b = package_root / "beta" / "tests"
    for path in (tests_a, tests_b):
        path.mkdir(parents=True)
        (path / "alpha.test.ts").write_text("// placeholder")

    package_json = {
        "dependencies": {"@prisma/client": "latest"},
        "packageManager": "npm@9.0.0",
    }
    (package_root / "package.json").write_text(json.dumps(package_json))
    (package_root / "package-lock.json").write_text("{}\n")
    (package_root / "node_modules").mkdir()

    calls: list[tuple[Path, dict[str, object] | None]] = []
    monkeypatch.setattr(run_demo_tests, "_has_prisma_client", lambda _: False)
    monkeypatch.setattr(
        run_demo_tests,
        "_ensure_prisma_client",
        lambda root, meta: calls.append((root, meta)) or True,
    )

    suites = list(run_demo_tests._discover_tests(demo_root))

    assert len(suites) == 1
    assert calls == [(package_root, package_json)]


def test_empty_suite_fails_without_allow_empty(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)
    # Present a test file that collects nothing so pytest exits with code 5.
    (tests_dir / "test_empty.py").write_text("# no tests yet\n")

    exit_code = run_demo_tests.main(["--runtime-dir", str(tmp_path / "runtime")], demo_root=demo_root)

    assert exit_code == 1


def test_allow_empty_downgrades_empty_suite_to_warning(tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)
    (tests_dir / "test_empty.py").write_text("# no tests yet\n")

    exit_code = run_demo_tests.main(
        ["--runtime-dir", str(tmp_path / "runtime"), "--allow-empty"],
        demo_root=demo_root,
    )

    assert exit_code == 0


def test_main_reports_durations_and_slowest_suites(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture
) -> None:
    demo_root = tmp_path / "demo"
    alpha_tests = demo_root / "alpha" / "tests"
    beta_tests = demo_root / "beta" / "tests"
    for tests_dir in (alpha_tests, beta_tests):
        tests_dir.mkdir(parents=True)

    suites: Iterable[run_demo_tests.Suite] = (
        run_demo_tests.Suite(demo_root=alpha_tests.parent, tests_dir=alpha_tests, runner="python"),
        run_demo_tests.Suite(demo_root=beta_tests.parent, tests_dir=beta_tests, runner="python"),
    )

    timings = iter([0.0, 0.25, 0.25, 1.0])
    monkeypatch.setattr(run_demo_tests, "_discover_tests", lambda *_, **__: suites)
    monkeypatch.setattr(run_demo_tests, "_run_suite", lambda *_, **__: (0, None))
    monkeypatch.setattr(run_demo_tests.time, "perf_counter", lambda: next(timings))

    exit_code = run_demo_tests.main(["--runtime-dir", str(tmp_path / "runtime")], demo_root=demo_root)

    output = capsys.readouterr().out
    assert exit_code == 0
    assert "total 1.00s" in output
    assert "Slowest suites:" in output
    assert str(beta_tests) in output


def test_node_suites_run_in_ci_mode(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")
    captured_env: dict[str, str] = {}

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        captured_env.update(kwargs.get("env", {}))
        return _Result()

    monkeypatch.setattr(subprocess, "run", _fake_run)

    exit_code, _ = run_demo_tests._run_suite(suite, {}, timeout=1)

    assert exit_code == 0
    assert captured_env["CI"].lower() in {"1", "true"}
    assert captured_env["npm_config_progress"] == "false"
    assert captured_env["npm_config_fund"] == "false"


def test_node_suites_use_runtime_root_playwright_cache(
    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "example" / "tests"
    tests_dir.mkdir(parents=True)

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")
    runtime_root = tmp_path / "runtime-root"
    captured_env: dict[str, str] = {}

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        captured_env.update(kwargs.get("env", {}))
        return _Result()

    monkeypatch.setattr(subprocess, "run", _fake_run)

    exit_code, _ = run_demo_tests._run_suite(
        suite, {"DEMO_RUNTIME_ROOT": str(runtime_root)}, timeout=1
    )

    assert exit_code == 0
    cache_path = Path(captured_env["PLAYWRIGHT_BROWSERS_PATH"])
    expected_cache = Path(
        os.environ.get(
            "DEMO_PLAYWRIGHT_CACHE",
            runtime_root / "playwright" / "ms-playwright",
        )
    )
    assert cache_path == expected_cache
    assert cache_path.exists()


def test_foundry_suites_set_ci_profile(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "test"
    tests_dir.mkdir(parents=True)
    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="forge")
    captured: dict[str, object] = {}

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        captured.update(
            {
                "cmd": cmd,
                "env": kwargs.get("env"),
                "cwd": kwargs.get("cwd"),
            }
        )
        return _Result()

    monkeypatch.setattr(subprocess, "run", _fake_run)

    exit_code, _ = run_demo_tests._run_suite(suite, {}, timeout=1)

    assert exit_code == 0
    assert captured["cmd"][:3] == ["forge", "test", "--root"]
    assert captured["cmd"][3] == str(demo_root)
    env = captured["env"]
    assert isinstance(env, dict)
    assert env["FOUNDRY_PROFILE"].lower() == "ci"
    assert str(Path.home() / ".foundry" / "bin") in env["PATH"]
    assert captured["cwd"] == demo_root


def test_phase8_skips_playwright_dep_install_when_ready(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "Phase-8-Universal-Value-Dominance"
    tests_dir = demo_root / "tests"
    demo_root.mkdir()
    tests_dir.mkdir()

    captured_env: dict[str, str] = {}

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        captured_env.update(kwargs.get("env", {}))  # type: ignore[arg-type]
        return _Result()

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")

    monkeypatch.setattr(run_demo_tests, "_can_install_playwright_deps", lambda: True)
    monkeypatch.setattr(run_demo_tests, "_playwright_system_deps_ready", lambda: True)
    monkeypatch.setattr(run_demo_tests, "_apt_repos_reachable", lambda: pytest.fail("No apt probe is needed when dependencies are ready"))
    monkeypatch.setattr(subprocess, "run", _fake_run)

    code, _ = run_demo_tests._run_suite(suite, {})

    assert code == 0
    assert captured_env["PLAYWRIGHT_INSTALL_WITH_DEPS"] == "0"


def test_phase8_honors_user_playwright_dep_preference(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "Phase-8-Universal-Value-Dominance"
    tests_dir = demo_root / "tests"
    demo_root.mkdir()
    tests_dir.mkdir()

    captured_env: dict[str, str] = {}

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        captured_env.update(kwargs.get("env", {}))  # type: ignore[arg-type]
        return _Result()

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")

    monkeypatch.setenv("PLAYWRIGHT_INSTALL_WITH_DEPS", "0")
    monkeypatch.setattr(run_demo_tests, "_can_install_playwright_deps", lambda: True)
    monkeypatch.setattr(run_demo_tests, "_playwright_system_deps_ready", lambda: False)
    monkeypatch.setattr(run_demo_tests, "_apt_repos_reachable", lambda: True)
    monkeypatch.setattr(run_demo_tests, "_playwright_downloads_reachable", lambda: True)
    monkeypatch.setattr(subprocess, "run", _fake_run)

    code, _ = run_demo_tests._run_suite(suite, {}, timeout=1)

    assert code == 0
    assert captured_env["PLAYWRIGHT_INSTALL_WITH_DEPS"] == "0"
    assert captured_env["PLAYWRIGHT_OPTIONAL_E2E"] == "1"


def test_phase8_auto_installs_deps_when_host_ready(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    demo_root = tmp_path / "Phase-8-Universal-Value-Dominance"
    tests_dir = demo_root / "tests"
    demo_root.mkdir()
    tests_dir.mkdir()

    captured_env: dict[str, str] = {}

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        captured_env.update(kwargs.get("env", {}))  # type: ignore[arg-type]
        return _Result()

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")

    monkeypatch.delenv("PLAYWRIGHT_INSTALL_WITH_DEPS", raising=False)
    monkeypatch.setattr(run_demo_tests, "_can_install_playwright_deps", lambda: True)
    monkeypatch.setattr(run_demo_tests, "_playwright_system_deps_ready", lambda: False)
    monkeypatch.setattr(run_demo_tests, "_apt_repos_reachable", lambda: True)
    monkeypatch.setattr(run_demo_tests, "_playwright_downloads_reachable", lambda: True)
    monkeypatch.setattr(subprocess, "run", _fake_run)

    code, _ = run_demo_tests._run_suite(suite, {}, timeout=1)

    assert code == 0
    assert captured_env["PLAYWRIGHT_INSTALL_WITH_DEPS"] == "1"
    assert captured_env["PLAYWRIGHT_OPTIONAL_E2E_ON_FAILURE"] == "1"


def test_vitest_suites_use_single_thread_pool(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
    demo_root = tmp_path / "demo"
    tests_dir = demo_root / "tests"
    tests_dir.mkdir(parents=True)
    (demo_root / "package.json").write_text('{"scripts": {"test": "vitest run"}}')

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")
    commands: list[list[str]] = []

    class _Result:
        returncode = 0

    def _fake_run(cmd: list[str], **kwargs: object) -> _Result:
        commands.append(cmd)
        return _Result()

    monkeypatch.setattr(subprocess, "run", _fake_run)

    exit_code, _ = run_demo_tests._run_suite(suite, {}, timeout=1)

    assert exit_code == 0
    assert commands
    command = commands[0]
    assert "--runInBand" not in command
    assert "--pool" in command


def test_node_suite_reports_missing_runner(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture
) -> None:
    demo_root = tmp_path / "node-demo"
    tests_dir = demo_root / "tests"
    tests_dir.mkdir(parents=True)
    (tests_dir / "ledger.test.ts").write_text("describe('ok', () => {});")

    suite = run_demo_tests.Suite(demo_root=demo_root, tests_dir=tests_dir, runner="npm")

    # Remove PATH entries to force a FileNotFoundError for npm during the run.
    monkeypatch.setenv("PATH", str(tmp_path / "bin"))

    exit_code, _ = run_demo_tests._run_suite(suite, env_overrides={})

    captured = capsys.readouterr()
    assert exit_code == 1
    assert "npm" in captured.out
    assert "PATH" in captured.out


def test_runner_filter_does_not_prepare_or_run_unselected_node_suites(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    demo_root = tmp_path / "demo"
    demo_root.mkdir()
    suites = [run_demo_tests.Suite(demo_root / name, demo_root / name / "tests", runner) for name, runner in [("alpha", "python"), ("beta", "npm")]]
    prepared = []
    executed = []
    def discover(*args, **kwargs):
        prepared.append(kwargs["generate_prisma"])
        return suites
    monkeypatch.setattr(run_demo_tests, "_discover_tests", discover)
    def execute(suite, *args, **kwargs):
        executed.append(suite.runner)
        return run_demo_tests.SuiteResult(suite, 0, 0.01)
    monkeypatch.setattr(run_demo_tests, "_execute_suite", execute)
    assert run_demo_tests.main(["--runner", "python"], demo_root=demo_root) == 0
    assert prepared == [False]
    assert executed == ["python"]


def test_apt_probe_handles_socket_timeout(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(run_demo_tests.sys, "platform", "linux")
    def timeout(*args, **kwargs):
        raise TimeoutError("test timeout")
    monkeypatch.setattr(run_demo_tests.urllib.request, "urlopen", timeout)
    assert run_demo_tests._apt_repos_reachable() is False