that's too much!

.venv/lib/python3.12/site-packages/pyogrio/tests/fixtures/README.md

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+# Test datasets
+
+## Natural Earth lowres
+
+`naturalearth_lowres.shp` was copied from GeoPandas.
+
+## FGDB test dataset
+
+`test_fgdb.gdb.zip`
+Downloaded from http://trac.osgeo.org/gdal/raw-attachment/wiki/FileGDB/test_fgdb.gdb.zip
+
+### GPKG test dataset with null values
+
+`test_gpkg_nulls.gpkg` was created using Fiona backend to GeoPandas:
+
+```
+from collections import OrderedDict
+
+import fiona
+import geopandas as gp
+import numpy as np
+from pyogrio import write_dataframe
+
+filename = "test_gpkg_nulls.gpkg"
+
+df = gp.GeoDataFrame(
+    {
+        "col_bool": np.array([True, False, True], dtype="bool"),
+        "col_int8": np.array([1, 2, 3], dtype="int8"),
+        "col_int16": np.array([1, 2, 3], dtype="int16"),
+        "col_int32": np.array([1, 2, 3], dtype="int32"),
+        "col_int64": np.array([1, 2, 3], dtype="int64"),
+        "col_uint8": np.array([1, 2, 3], dtype="uint8"),
+        "col_uint16": np.array([1, 2, 3], dtype="uint16"),
+        "col_uint32": np.array([1, 2, 3], dtype="uint32"),
+        "col_uint64": np.array([1, 2, 3], dtype="uint64"),
+        "col_float32": np.array([1.5, 2.5, 3.5], dtype="float32"),
+        "col_float64": np.array([1.5, 2.5, 3.5], dtype="float64"),
+    },
+    geometry=gp.points_from_xy([0, 1, 2], [0, 1, 2]),
+    crs="EPSG:4326",
+)
+
+write_dataframe(df, filename)
+
+# construct row with null values
+# Note: np.nan can only be used for float values
+null_row = {
+    "type": "Fetaure",
+    "id": 4,
+    "properties": OrderedDict(
+        [
+            ("col_bool", None),
+            ("col_int8", None),
+            ("col_int16", None),
+            ("col_int32", None),
+            ("col_int64", None),
+            ("col_uint8", None),
+            ("col_uint16", None),
+            ("col_uint32", None),
+            ("col_uint64", None),
+            ("col_float32", np.nan),
+            ("col_float64", np.nan),
+        ]
+    ),
+    "geometry": {"type": "Point", "coordinates": (4.0, 4.0)},
+}
+
+# append row with nulls to GPKG
+with fiona.open(filename, "a") as c:
+    c.write(null_row)
+```
+
+NOTE: Reading boolean values into GeoPandas using Fiona backend treats those
+values as `None` and column dtype as `object`; Pyogrio treats those values as
+`np.nan` and column dtype as `float64`.
+
+### GPKG test with MultiSurface
+
+This was extracted from https://prd-tnm.s3.amazonaws.com/StagedProducts/Hydrography/NHDPlusHR/Beta/GDB/NHDPLUS_H_0308_HU4_GDB.zip
+`NHDWaterbody` layer using ogr2ogr:
+
+```bash
+ogr2ogr test_mixed_surface.gpkg NHDPLUS_H_0308_HU4_GDB.gdb NHDWaterbody -where '"NHDPlusID" = 15000300070477' -select "NHDPlusID"
+```
+
+### OSM PBF test
+
+This was downloaded from https://github.com/openstreetmap/OSM-binary/blob/master/resources/sample.pbf