feat: Introduce "No tags" filter option for models and recipes. fixes #728

tests/services/test_no_tags_filter.py

@@ -0,0 +1,104 @@
+import pytest
+from py.services.model_query import ModelFilterSet, FilterCriteria
+from py.services.recipe_scanner import RecipeScanner
+from pathlib import Path
+from py.config import config
+import asyncio
+from types import SimpleNamespace
+
+class StubSettings:
+    def get(self, key, default=None):
+        return default
+
+# --- Model Filtering Tests ---
+
+def test_model_filter_set_no_tags_include():
+    filter_set = ModelFilterSet(StubSettings())
+    data = [
+        {"name": "m1", "tags": ["tag1"]},
+        {"name": "m2", "tags": []},
+        {"name": "m3", "tags": None},
+        {"name": "m4", "tags": ["tag2"]},
+    ]
+    
+    # Include __no_tags__
+    criteria = FilterCriteria(tags={"__no_tags__": "include"})
+    result = filter_set.apply(data, criteria)
+    assert len(result) == 2
+    assert {item["name"] for item in result} == {"m2", "m3"}
+
+def test_model_filter_set_no_tags_exclude():
+    filter_set = ModelFilterSet(StubSettings())
+    data = [
+        {"name": "m1", "tags": ["tag1"]},
+        {"name": "m2", "tags": []},
+        {"name": "m3", "tags": None},
+        {"name": "m4", "tags": ["tag2"]},
+    ]
+    
+    # Exclude __no_tags__
+    criteria = FilterCriteria(tags={"__no_tags__": "exclude"})
+    result = filter_set.apply(data, criteria)
+    assert len(result) == 2
+    assert {item["name"] for item in result} == {"m1", "m4"}
+
+def test_model_filter_set_no_tags_mixed():
+    filter_set = ModelFilterSet(StubSettings())
+    data = [
+        {"name": "m1", "tags": ["tag1"]},
+        {"name": "m2", "tags": []},
+        {"name": "m3", "tags": None},
+        {"name": "m4", "tags": ["tag1", "tag2"]},
+    ]
+    
+    # Include tag1 AND __no_tags__
+    criteria = FilterCriteria(tags={"tag1": "include", "__no_tags__": "include"})
+    result = filter_set.apply(data, criteria)
+    # m1 (tag1), m2 (no tags), m3 (no tags), m4 (tag1)
+    assert len(result) == 4
+
+# --- Recipe Filtering Tests ---
+
+class StubLoraScanner:
+    def __init__(self):
+        self._cache = SimpleNamespace(raw_data=[], version_index={})
+    async def get_cached_data(self):
+        return self._cache
+    async def refresh_cache(self, force=False):
+        pass
+
+@pytest.fixture
+def recipe_scanner(tmp_path, monkeypatch):
+    monkeypatch.setattr(config, "loras_roots", [str(tmp_path)])
+    stub = StubLoraScanner()
+    scanner = RecipeScanner(lora_scanner=stub)
+    return scanner
+
+@pytest.mark.asyncio
+async def test_recipe_scanner_no_tags_filter(recipe_scanner):
+    scanner = recipe_scanner
+    
+    # Mock some recipe data
+    recipes = [
+        {"id": "r1", "tags": ["tag1"], "title": "R1"},
+        {"id": "r2", "tags": [], "title": "R2"},
+        {"id": "r3", "tags": None, "title": "R3"},
+    ]
+    
+    # We need to inject these into the scanner's cache
+    # Since get_paginated_data calls get_cached_data() which we stubbed
+    scanner._cache = SimpleNamespace(
+        raw_data=recipes,
+        sorted_by_date=recipes,
+        sorted_by_name=recipes
+    )
+    
+    # Test Include __no_tags__
+    result = await scanner.get_paginated_data(page=1, page_size=10, filters={"tags": {"__no_tags__": "include"}})
+    assert len(result["items"]) == 2
+    assert {item["id"] for item in result["items"]} == {"r2", "r3"}
+    
+    # Test Exclude __no_tags__
+    result = await scanner.get_paginated_data(page=1, page_size=10, filters={"tags": {"__no_tags__": "exclude"}})
+    assert len(result["items"]) == 1
+    assert result["items"][0]["id"] == "r1"