feat: add a simple smoke test

It doesn't exercise much, but at least it demonstrates what we're trying to do.

Author: gadomski

stac_fastapi/extensions/tests/test_transaction.py

@@ -0,0 +1,121 @@
+import json
+from typing import Iterator
+
+import pytest
+from starlette.testclient import TestClient
+
+from stac_fastapi.api.app import StacApi
+from stac_fastapi.extensions.core import TransactionExtension
+from stac_fastapi.types.config import ApiSettings
+from stac_fastapi.types.core import BaseCoreClient, BaseTransactionsClient
+from stac_fastapi.types.stac import Item, ItemCollection
+
+
+class DummyCoreClient(BaseCoreClient):
+    def all_collections(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def get_collection(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def get_item(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def get_search(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def post_search(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def item_collection(self, *args, **kwargs):
+        raise NotImplementedError
+
+
+class DummyTransactionsClient(BaseTransactionsClient):
+    """Defines a pattern for implementing the STAC transaction extension."""
+
+    def create_item(self, item: Item | ItemCollection, *args, **kwargs):
+        return {"created": True, "type": item["type"]}
+
+    def update_item(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def delete_item(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def create_collection(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def update_collection(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def delete_collection(self, *args, **kwargs):
+        raise NotImplementedError
+
+
+def test_create_item(client: TestClient, item: Item) -> None:
+    response = client.post("/collections/a-collection/items", content=json.dumps(item))
+    assert response.is_success, response.text
+    assert response.json()["type"] == "Feature"
+
+
+def test_create_item_collection(
+    client: TestClient, item_collection: ItemCollection
+) -> None:
+    response = client.post(
+        "/collections/a-collection/items", content=json.dumps(item_collection)
+    )
+    assert response.is_success, response.text
+    assert response.json()["type"] == "FeatureCollection"
+
+
+@pytest.fixture
+def client(
+    core_client: DummyCoreClient, transactions_client: DummyTransactionsClient
+) -> Iterator[TestClient]:
+    settings = ApiSettings()
+    api = StacApi(
+        settings=settings,
+        client=core_client,
+        extensions=[
+            TransactionExtension(client=transactions_client, settings=settings),
+        ],
+    )
+    with TestClient(api.app) as client:
+        yield client
+
+
+@pytest.fixture
+def core_client() -> DummyCoreClient:
+    return DummyCoreClient()
+
+
+@pytest.fixture
+def transactions_client() -> DummyTransactionsClient:
+    return DummyTransactionsClient()
+
+
+@pytest.fixture
+def item_collection(item: Item) -> ItemCollection:
+    return {
+        "type": "FeatureCollection",
+        "features": [item],
+        "links": [],
+        "context": None,
+    }
+
+
+@pytest.fixture
+def item() -> Item:
+    return {
+        "type": "Feature",
+        "stac_version": "1.0.0",
+        "stac_extensions": [],
+        "id": "test_item",
+        "geometry": {"type": "Point", "coordinates": [-105, 40]},
+        "bbox": [-105, 40, -105, 40],
+        "properties": {},
+        "links": [],
+        "assets": {},
+        "collection": "test_collection",
+    }