chore: import upstream snapshot with attribution

tests/backend/model_manager/test_external_api_config.py

@@ -0,0 +1,54 @@
+import pytest
+from pydantic import ValidationError
+
+from invokeai.backend.model_manager.configs.external_api import (
+    ExternalApiModelConfig,
+    ExternalApiModelDefaultSettings,
+    ExternalImageSize,
+    ExternalModelCapabilities,
+)
+
+
+def test_external_api_model_config_defaults() -> None:
+    capabilities = ExternalModelCapabilities(modes=["txt2img"], supports_seed=True)
+
+    config = ExternalApiModelConfig(
+        name="Test External",
+        provider_id="openai",
+        provider_model_id="gpt-image-1",
+        capabilities=capabilities,
+    )
+
+    assert config.path == "external://openai/gpt-image-1"
+    assert config.source == "external://openai/gpt-image-1"
+    assert config.hash == "external:openai:gpt-image-1"
+    assert config.file_size == 0
+    assert config.default_settings is None
+    assert config.capabilities.supports_seed is True
+
+
+def test_external_api_model_capabilities_allows_aspect_ratio_sizes() -> None:
+    capabilities = ExternalModelCapabilities(
+        modes=["txt2img"],
+        allowed_aspect_ratios=["1:1"],
+        aspect_ratio_sizes={"1:1": ExternalImageSize(width=1024, height=1024)},
+    )
+
+    assert capabilities.aspect_ratio_sizes is not None
+    assert capabilities.aspect_ratio_sizes["1:1"].width == 1024
+
+
+def test_external_api_model_config_rejects_extra_fields() -> None:
+    with pytest.raises(ValidationError):
+        ExternalModelCapabilities(modes=["txt2img"], supports_seed=True, extra_field=True)  # type: ignore
+
+    with pytest.raises(ValidationError):
+        ExternalApiModelDefaultSettings(width=512, extra_field=True)  # type: ignore
+
+
+def test_external_api_model_config_validates_limits() -> None:
+    with pytest.raises(ValidationError):
+        ExternalModelCapabilities(modes=["txt2img"], max_images_per_request=0)
+
+    with pytest.raises(ValidationError):
+        ExternalApiModelDefaultSettings(width=0)