def METHOD_NAME(lsp_client_and_completion, qtbot):
    client, completion = lsp_client_and_completion
    folder = '/tmp/'
    # Test addition
    params = {
        'folder': folder,
        'kind': WorkspaceUpdateKind.ADDITION,
        'instance': ''
    }
    client.send_workspace_folders_change(params)
    assert folder in client.watched_folders
    # Test deletion
    params = {
        'folder': folder,
        'kind': WorkspaceUpdateKind.DELETION,
        'instance': ''
    }
    client.send_workspace_folders_change(params)
    assert folder not in client.watched_folders