# -*- coding: utf-8 -*-
"""
Browser launch helper checks (no real browser started).
"""
import pytest


class TestPlaywrightLaunchHelpers:
    """Persistent context launch parts must match RPA contract."""

    def test_persistent_context_includes_maximized(self):
        from util.playwright_stealth import persistent_context_launch_parts

        args, _ignore = persistent_context_launch_parts()
        assert "--start-maximized" in args

    def test_open_child_runner_launch_keywords_documented(self):
        """launch_persistent_context kwargs contract (static read of source)."""
        import os

        path = os.path.join(
            os.path.dirname(__file__),
            "..",
            "scripts",
            "service",
            "open_child_runner.py",
        )
        path = os.path.abspath(path)
        with open(path, encoding="utf-8") as f:
            src = f.read()
        assert "launch_persistent_context" in src
        assert "headless=False" in src
        assert "no_viewport=True" in src
        assert '"channel"' in src or "'channel'" in src


class TestResolveChromiumChannel:
    """resolve_chromium_channel returns a channel string when browsers exist."""

    def test_returns_string_or_none(self):
        from service.browser_service import resolve_chromium_channel

        ch = resolve_chromium_channel()
        assert ch is None or ch in ("chrome", "msedge")