Function test_export_import_schema_float_pointer

python/pyarrow/tests/test_cffi.py:338–349

()

@needs_cffi
def test_export_import_schema_float_pointer():
    # Previous versions of the R Arrow library used to pass pointer
    # values as a double.
    c_schema = ffi.new("struct ArrowSchema*")
    ptr_schema = int(ffi.cast("uintptr_t", c_schema))

    match = "Passing a pointer value as a float is unsafe"
    with pytest.warns(UserWarning, match=match):
        make_schema()._export_to_c(float(ptr_schema))
    with pytest.warns(UserWarning, match=match):
        schema_new = pa.Schema._import_from_c(float(ptr_schema))
    assert schema_new == make_schema()


def check_export_import_batch(array_type, exporter, importer, batch_factory):