Added more unit tests for STAC catalogs and items for metadata_from_s…

…tac Open-EO#527

tests/test_metadata.py

@@ -786,23 +786,48 @@ def filter_bbox(self, bbox):
     assert new.bbox == (1, 2, 3, 4)
 
 
-def test_metadata_from_stac(tmp_path):
-    collection_json = {
-        "type": "Collection",
-        "id": "test-collection",
-        "stac_version": "1.0.0",
-        "description": "Test collection",
-        "links": [],
-        "title": "Test Collection",
-        "extent": {
-            "spatial": {"bbox": [[-180.0, -90.0, 180.0, 90.0]]},
-            "temporal": {"interval": [["2020-01-01T00:00:00Z", "2020-01-10T00:00:00Z"]]},
-        },
-        "license": "proprietary",
-        "summaries": {"eo:bands": [{"name": "B01"}, {"name": "B02"}]},
-    }
+collection_json = {
+    "type": "Collection",
+    "id": "test-collection",
+    "stac_version": "1.0.0",
+    "description": "Test collection",
+    "links": [],
+    "title": "Test Collection",
+    "extent": {
+        "spatial": {"bbox": [[-180.0, -90.0, 180.0, 90.0]]},
+        "temporal": {"interval": [["2020-01-01T00:00:00Z", "2020-01-10T00:00:00Z"]]},
+    },
+    "license": "proprietary",
+    "summaries": {"eo:bands": [{"name": "B01"}, {"name": "B02"}]},
+}
+
+catalog_json = {
+    "type": "Catalog",
+    "id": "test-catalog",
+    "stac_version": "1.0.0",
+    "description": "Test Catalog",
+    "links": [],
+}
+
+item_json = {
+    "type": "Feature",
+    "stac_version": "1.0.0",
+    "id": "test-item",
+    "properties": {"datetime": "2020-05-22T00:00:00Z", "eo:bands": [{"name": "SCL"}, {"name": "B08"}]},
+    "geometry": {"coordinates": [[[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]], "type": "Polygon"},
+    "links": [],
+    "assets": {},
+    "bbox": [0, 1, 0, 1],
+    "stac_extensions": [],
+}
+
+
+@pytest.mark.parametrize(
+    "test_stac, expected", [(collection_json, ["B01", "B02"]), (catalog_json, []), (item_json, ["SCL", "B08"])]
+)
+def test_metadata_from_stac(tmp_path, test_stac, expected):
 
-    path = tmp_path / "collection.json"
-    path.write_text(json.dumps(collection_json))
+    path = tmp_path / "stac.json"
+    path.write_text(json.dumps(test_stac))
     metadata = metadata_from_stac(path)
-    assert metadata.band_names == ["B01", "B02"]
+    assert metadata.band_names == expected