from playwright.sync_api import Page, expect


def test_dashboard_loads_and_has_title(page: Page):
    """Verify the dashboard page loads and the title is correct."""
    expect(page).to_have_title("CalMiner Dashboard")


def test_dashboard_shows_summary_metrics_panel(page: Page):
    """Check that the summary metrics panel is visible."""
    summary_panel = page.locator("section.panel h2:has-text('Summary Metrics')")
    expect(summary_panel).to_be_visible()


def test_dashboard_renders_cost_chart(page: Page):
    """Ensure the scenario cost chart canvas is present."""
    cost_chart = page.locator("#scenario-cost-chart")
    expect(cost_chart).to_be_visible()