AppFlowy/shared-lib/lib-ot/tests/node/operation_delta_test.rs

use crate::node::script::NodeScript::{AssertNodeDelta, InsertNode, UpdateBody};
use crate::node::script::{edit_node_delta, NodeTest};
use lib_ot::core::NodeDataBuilder;
use lib_ot::text_delta::DeltaTextOperationBuilder;

#[test]
fn operation_update_delta_test() {
  let mut test = NodeTest::new();
  let initial_delta = DeltaTextOperationBuilder::new().build();
  let new_delta = DeltaTextOperationBuilder::new()
    .retain(initial_delta.utf16_base_len)
    .insert("Hello, world")
    .build();
  let (changeset, expected) = edit_node_delta(&initial_delta, new_delta);
  let node = NodeDataBuilder::new("text")
    .insert_delta(initial_delta.clone())
    .build();

  let scripts = vec![
    InsertNode {
      path: 0.into(),
      node_data: node,
      rev_id: 1,
    },
    UpdateBody {
      path: 0.into(),
      changeset: changeset.clone(),
    },
    AssertNodeDelta {
      path: 0.into(),
      expected,
    },
    UpdateBody {
      path: 0.into(),
      changeset: changeset.inverted(),
    },
    AssertNodeDelta {
      path: 0.into(),
      expected: initial_delta,
    },
  ];
  test.run_scripts(scripts);
}