import pytest
from django.core.files.uploadedfile import SimpleUploadedFile

pytestmark = pytest.mark.django_db


def test_upload_rejects_empty_oversized_and_unsupported_files(workspace, settings):
    _, _, client, *_ = workspace
    settings.MAX_UPLOAD_BYTES = 4
    assert (
        client.post("/api/datasets", data={"file": SimpleUploadedFile("empty.csv", b"")}).status_code == 400
    )
    assert (
        client.post("/api/datasets", data={"file": SimpleUploadedFile("large.csv", b"12345")}).status_code
        == 400
    )
    settings.MAX_UPLOAD_BYTES = 1024
    response = client.post("/api/datasets", data={"file": SimpleUploadedFile("invalid.txt", b"abc")})
    assert response.status_code == 400