"""Capability Convergence Explanation — why the registry converges (Phase Ω, understand the core).

Pins the three derived views: the why-converge domain matrix (cross-domain core caps + a reason), the
family reduction (~60-70 MCAPs collapse to a small set of families), and the COMPUTED Core-vs-Domain
split (Core recurs across independent domains+types; Domain stays in one — which Medical made obvious).
"""

from __future__ import annotations

import os
import subprocess
import sys


def _run():
    root = os.path.join(os.path.dirname(__file__), "..")
    r = subprocess.run(
        [sys.executable, "reference_scenarios/capability_convergence_explanation.py"],
        cwd=root, env={**os.environ, "PYTHONPATH": "."}, capture_output=True, text=True,
    )
    assert r.returncode == 0, r.stderr
    return r.stdout


def test_runs_and_explains_why():
    out = _run()
    assert "WARUM konvergieren" in out
    assert "Universeller Prozess" in out  # a reason, not just a count


def test_cross_domain_core_caps_in_matrix():
    out = _run()
    for cap in ["secure_signed_update_distribution", "sbom_creation", "technical_vulnerability_management"]:
        assert cap in out


def test_families_reduce_the_registry():
    out = _run()
    assert "Capability Families" in out
    assert "reduzieren sich auf" in out
    for fam in ["Risk", "Update", "Identity & Access", "Inventory & Composition"]:
        assert fam in out


def test_core_vs_domain_is_computed():
    out = _run()
    assert "BERECHNETE Eigenschaft" in out
    assert "**Core (" in out and "**Domain (" in out