hms-mediaengine/tests/unit/test_builtin_plugins.py

"""Tests über ALLE eingebauten Pflicht-Plugins (PLAN.md §15, §29.1).

Parametrisiert über jedes gefundene Builtin-Plugin:
- Manifest validiert (inkl. Shader-Existenz je Backend)
- kind stimmt zur Kategorie (generator/filter)
- alle drei Backends d3d11/gl/gles deklariert (§12.6 Backend-Vertrag)
- max. 8 DMX-Slots gesamt (§14.7)
- adaptive_quality mit mindestens 3 Varianten (§15.1/§15.2 AQ-Regeln)
- Standard-Uniform-Satz in jedem Shader deklariert (§14.4)

Vollständigkeitsprüfung (§15.1/§15.2): exakt 10 Generatoren und
14 Filter mit den normativen Plugin-IDs sind vorhanden.
"""

from __future__ import annotations

from pathlib import Path

import pytest
from hms_plugin_sdk import load_manifest

REPO = Path(__file__).resolve().parents[2]
BUILTIN = REPO / "plugins" / "builtin"

REQUIRED_GENERATORS = {
    "com.hms.generator.solid",
    "com.hms.generator.gradient",
    "com.hms.generator.checker_grid",
    "com.hms.generator.stripes_chaser",
    "com.hms.generator.noise_clouds",
    "com.hms.generator.plasma",
    "com.hms.generator.wave_bars",
    "com.hms.generator.shapes",
    "com.hms.generator.drops_ripples",
    "com.hms.generator.starfield",
}

REQUIRED_FILTERS = {
    "com.hms.fx.transform2d",
    "com.hms.fx.color_adjust",
    "com.hms.fx.gradient_map",
    "com.hms.fx.blur_sharpen",
    "com.hms.fx.pixelate_quantize",
    "com.hms.fx.mirror_tile",
    "com.hms.fx.kaleidoscope",
    "com.hms.fx.wave_displace",
    "com.hms.fx.rgb_split",
    "com.hms.fx.glow_bloom",
    "com.hms.fx.edge_emboss",
    "com.hms.fx.vignette",
    "com.hms.fx.strobe_pulse",
    "com.hms.fx.feedback_trails",
}


def _plugin_dirs() -> list[Path]:
    dirs: list[Path] = []
    for category in ("generators", "filters"):
        dirs.extend(sorted((BUILTIN / category).glob("com.*")))
    return dirs


def _shaders_of(plugin_dir: Path) -> list[Path]:
    return [p for p in (plugin_dir / "shaders").rglob("*") if p.is_file()]


# ---------- Vollständigkeit (§15.1, §15.2) ----------


def test_all_mandatory_generators_present() -> None:
    found = {d.name for d in _plugin_dirs()}
    missing = REQUIRED_GENERATORS - found
    assert not missing, f"fehlende Pflicht-Generatoren: {sorted(missing)}"


def test_all_mandatory_filters_present() -> None:
    found = {d.name for d in _plugin_dirs()}
    missing = REQUIRED_FILTERS - found
    assert not missing, f"fehlende Pflicht-Filter: {sorted(missing)}"


def test_exactly_the_mandatory_set() -> None:
    """Keine unautorisierten Extras im Pflicht-Verzeichnis (Verwechselungs-
    schutz; Beispiele leben in plugins/examples)."""
    found = {d.name for d in _plugin_dirs()}
    expected = REQUIRED_GENERATORS | REQUIRED_FILTERS
    assert found == expected, (
        f"unerwartete Differenz: extra={sorted(found - expected)} "
        f"fehlt={sorted(expected - found)}"
    )


# ---------- Parametrisierte Einzelprüfungen ----------


@pytest.mark.parametrize("plugin_dir", _plugin_dirs(), ids=lambda p: p.name)
class TestBuiltinPlugin:
    def test_manifest_validates(self, plugin_dir: Path) -> None:
        manifest, errors = load_manifest(plugin_dir)
        assert errors == [], errors
        assert manifest["vendor"] == "HMS"
        assert manifest["failure_mode"] == "bypass"
        assert manifest["schema_version"] == 1
        assert manifest["api_version"] == 1

    def test_kind_matches_category(self, plugin_dir: Path) -> None:
        manifest, _ = load_manifest(plugin_dir)
        category = plugin_dir.parent.name
        expected = "generator" if category == "generators" else "filter"
        assert manifest["kind"] == expected

    def test_all_backends_declared(self, plugin_dir: Path) -> None:
        """§12.6 Backend-Vertrag: V1-Plugins liefern d3d11, gl und gles."""
        manifest, _ = load_manifest(plugin_dir)
        assert set(manifest["entrypoints"]) == {"d3d11", "gl", "gles"}
        assert set(manifest["capabilities"]["supported_backends"]) == {
            "d3d11",
            "gl",
            "gles",
        }

    def test_dmx_slot_footprint_max_8(self, plugin_dir: Path) -> None:
        """§14.7: maximal 8 generische DMX-Slots je Plugin."""
        manifest, _ = load_manifest(plugin_dir)
        total = sum(len(p.get("dmx_slots", [])) for p in manifest["parameters"])
        assert total <= 8, f"{plugin_dir.name}: {total} DMX-Slots > 8"

    def test_adaptive_quality_variants(self, plugin_dir: Path) -> None:
        """§15.1/§15.2: AQ mit mindestens 3 Varianten; Parametersemantik
        bleibt über Varianten unverändert (semantic_parameters_unchanged
        darf nur AQ-interne Größen nennen, nie semantische Parameter wegnehmen)."""
        manifest, _ = load_manifest(plugin_dir)
        aq = manifest.get("adaptive_quality")
        assert aq is not None, "adaptive_quality fehlt"
        ids = [v["id"] for v in aq["variants"]]
        assert len(ids) >= 3, f"nur {len(ids)} AQ-Varianten"

    def test_shader_uniform_contract(self, plugin_dir: Path) -> None:
        """§14.4: Standard-Inputs sind in jedem Shader deklariert; Filter
        sampeln die Eingabetextur, Generatoren deklarieren sie (Uniform-Satz
        identisch), auch wenn sie sie nicht nutzen."""
        shaders = _shaders_of(plugin_dir)
        assert shaders, "keine Shader-Dateien"
        for shader in shaders:
            src = shader.read_text(encoding="utf-8")
            for uniform in ("u_resolution", "u_time_seconds", "u_layer_opacity"):
                assert uniform in src, f"{shader.name}: {uniform} fehlt"

    def test_generator_shader_has_no_input_sampling(self, plugin_dir: Path) -> None:
        """Generatoren erzeugen Inhalte ohne Eingangsbild (§12.3): der
        Shader darf die Eingabetextur nicht als Quelle sampeln."""
        manifest, _ = load_manifest(plugin_dir)
        if manifest["kind"] != "generator":
            return
        for shader in _shaders_of(plugin_dir):
            src = shader.read_text(encoding="utf-8")
            sample_calls = (
                src.count("u_input_texture.Sample")
                + src.count("texture(u_input_texture")
                + src.count("texture2D(u_input_texture")
            )
            assert sample_calls == 0, (
                f"{plugin_dir.name}/{shader.name}: Generator sampelt u_input_texture"
            )

    def test_filter_mix_zero_is_free_bypass(self, plugin_dir: Path) -> None:
        """§15.3: jeder Filter besitzt mix; Mix 0 bypassed kostengünstig."""
        manifest, _ = load_manifest(plugin_dir)
        if manifest["kind"] != "filter":
            return
        ids = [p["id"] for p in manifest["parameters"]]
        assert "mix" in ids, f"{plugin_dir.name}: mix-Parameter fehlt"