Initial public release

backend/tests/test_raster_service.py

@@ -0,0 +1,67 @@
+from app.core.errors import AppError
+from app.services.raster_service import extract_raster_metadata
+
+
+def test_extract_raster_metadata_returns_dependency_aware_error(monkeypatch, tmp_path) -> None:
+    monkeypatch.setattr("app.services.raster_service._import_rasterio", lambda: (_ for _ in ()).throw(ImportError("rasterio not installed")))
+
+    file_path = tmp_path / "missing.tif"
+    file_path.write_bytes(b"\x00\x01\x02")
+
+    try:
+        extract_raster_metadata(str(file_path))
+    except AppError as exc:
+        assert exc.code == "RASTER_PROCESSING_UNAVAILABLE"
+    else:
+        raise AssertionError("Missing rasterio should raise AppError code RASTER_PROCESSING_UNAVAILABLE")
+
+
+def test_extract_raster_metadata_maps_basic_profile_fields(monkeypatch, tmp_path) -> None:
+    file_path = tmp_path / "sample.tif"
+    file_path.write_bytes(b"fake")
+
+    class FakeDataset:
+        width = 1024
+        height = 768
+        count = 4
+        driver = "GTiff"
+        crs = "EPSG:31370"
+        bounds = (100.0, 200.0, 500.0, 800.0)
+        res = (0.25, 0.25)
+        dtypes = ["uint16", "uint16", "uint16", "uint16"]
+        nodata = -9999
+
+        class transform:
+            @staticmethod
+            def to_gdal():
+                return (0.25, 0.0, 100.0, 0.0, -0.25, 800.0, 0.0, 0.0, 1.0)
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, exc_type, exc, tb):
+            return None
+
+    class FakeRasterio:
+        class errors:
+            class RasterioIOError(Exception):
+                ...
+
+        def open(self, *_):
+            return FakeDataset()
+
+    class FakeErrors:
+        RasterioIOError = FakeRasterio.errors.RasterioIOError
+
+    monkeypatch.setattr("app.services.raster_service._import_rasterio", lambda: (FakeRasterio(), FakeErrors()))
+
+    metadata = extract_raster_metadata(str(file_path))
+    assert metadata["driver"] == "GTiff"
+    assert metadata["width"] == 1024
+    assert metadata["height"] == 768
+    assert metadata["band_count"] == 4
+    assert metadata["crs"] == "EPSG:31370"
+    assert metadata["bounds"] == [100.0, 200.0, 500.0, 800.0]
+    assert metadata["resolution"] == [0.25, 0.25]
+    assert metadata["dtype"] == ["uint16", "uint16", "uint16", "uint16"]
+    assert metadata["nodata"] == -9999.0