feat: model registry with virtual-to-physical resolution

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

kischdle/llmux/tests/test_model_registry.py

@@ -0,0 +1,66 @@
+import pytest
+
+from llmux.model_registry import ModelRegistry
+
+
+@pytest.fixture
+def registry():
+    return ModelRegistry.from_config()
+
+
+def test_list_virtual_models(registry):
+    models = registry.list_virtual_models()
+    assert len(models) == 16
+    names = [m["id"] for m in models]
+    assert "Qwen3.5-9B-FP8-Thinking" in names
+    assert "GPT-OSS-20B-High" in names
+    assert "cohere-transcribe" in names
+    assert "Chatterbox-Multilingual" in names
+
+
+def test_virtual_model_openai_format(registry):
+    models = registry.list_virtual_models()
+    m = next(m for m in models if m["id"] == "Qwen3.5-9B-FP8-Thinking")
+    assert m["object"] == "model"
+    assert m["owned_by"] == "llmux"
+
+
+def test_resolve_virtual_to_physical(registry):
+    physical_id, physical, params = registry.resolve("Qwen3.5-9B-FP8-Thinking")
+    assert physical_id == "qwen3.5-9b-fp8"
+    assert physical.backend == "transformers"
+    assert params == {"enable_thinking": True}
+
+
+def test_resolve_instruct_variant(registry):
+    physical_id, physical, params = registry.resolve("Qwen3.5-9B-FP8-Instruct")
+    assert physical_id == "qwen3.5-9b-fp8"
+    assert params == {"enable_thinking": False}
+
+
+def test_resolve_gpt_oss_reasoning(registry):
+    physical_id, physical, params = registry.resolve("GPT-OSS-20B-Medium")
+    assert physical_id == "gpt-oss-20b"
+    assert params == {"system_prompt_prefix": "Reasoning: medium"}
+
+
+def test_resolve_same_physical_for_variants(registry):
+    pid1, _, _ = registry.resolve("Qwen3.5-9B-FP8-Thinking")
+    pid2, _, _ = registry.resolve("Qwen3.5-9B-FP8-Instruct")
+    assert pid1 == pid2
+
+
+def test_resolve_unknown_model_raises(registry):
+    with pytest.raises(KeyError):
+        registry.resolve("nonexistent-model")
+
+
+def test_get_physical(registry):
+    physical = registry.get_physical("qwen3.5-9b-fp8")
+    assert physical.type == "llm"
+    assert physical.estimated_vram_gb == 9
+
+
+def test_get_physical_unknown_raises(registry):
+    with pytest.raises(KeyError):
+        registry.get_physical("nonexistent")