| 12345678910111213141516171819202122232425262728293031323334353637383940 | from core.file import FILE_MODEL_IDENTITY, File, FileTransferMethod, FileTypedef test_file_loads_and_dumps():    file = File(        id="file1",        tenant_id="tenant1",        type=FileType.IMAGE,        transfer_method=FileTransferMethod.REMOTE_URL,        remote_url="https://example.com/image1.jpg",    )    file_dict = file.model_dump()    assert file_dict["dify_model_identity"] == FILE_MODEL_IDENTITY    assert file_dict["type"] == file.type.value    assert isinstance(file_dict["type"], str)    assert file_dict["transfer_method"] == file.transfer_method.value    assert isinstance(file_dict["transfer_method"], str)    assert "_extra_config" not in file_dict    file_obj = File.model_validate(file_dict)    assert file_obj.id == file.id    assert file_obj.tenant_id == file.tenant_id    assert file_obj.type == file.type    assert file_obj.transfer_method == file.transfer_method    assert file_obj.remote_url == file.remote_urldef test_file_to_dict():    file = File(        id="file1",        tenant_id="tenant1",        type=FileType.IMAGE,        transfer_method=FileTransferMethod.REMOTE_URL,        remote_url="https://example.com/image1.jpg",    )    file_dict = file.to_dict()    assert "_extra_config" not in file_dict    assert "url" in file_dict
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