Add local file tests

tests/remote_io/test_url_download_local.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import pathlib
+
+import pytest
+
+import daft
+from tests.remote_io.conftest import YieldFixture
+
+
+@pytest.fixture(scope="function")
+def local_image_data_fixture(tmpdir, image_data) -> YieldFixture[list[str]]:
+    """Populates the local tmpdir with some fake data and returns filepaths"""
+    # Dump some images into the tmpdir
+    tmpdir = pathlib.Path(tmpdir)
+    urls = []
+    for i in range(10):
+        path = tmpdir / f"{i}.jpeg"
+        path.write_bytes(image_data)
+        urls.append(str(path))
+
+    yield urls
+
+    # Cleanup tmpdir
+    for child in tmpdir.glob("*"):
+        child.unlink()
+
+
+def test_url_download_local(local_image_data_fixture, image_data):
+    data = {"urls": local_image_data_fixture}
+    df = daft.from_pydict(data)
+    df = df.with_column("data", df["urls"].url.download())
+    assert df.to_pydict() == {**data, "data": [image_data for _ in range(len(local_image_data_fixture))]}