@player-ui/player/src/expressions/__tests__/utils.test.ts

import { describe, it, expect } from "vitest";
import { parseExpression } from "../parser";
import { findClosestNodeAtPosition } from "../utils";

describe("findClosestNodeAtPosition", () => {
  it("finds the right nodes", () => {
    const expression = '{{foo}} = test("bar", 12, ["baz", "qux"]) + !true';
    const parsed = parseExpression(expression);

    expect(findClosestNodeAtPosition(parsed, { character: 1 })).toStrictEqual(
      expect.objectContaining({
        type: "ModelRef",
        ref: "foo",
      }),
    );

    expect(findClosestNodeAtPosition(parsed, { character: 8 })).toStrictEqual(
      expect.objectContaining({
        type: "Assignment",
      }),
    );

    expect(findClosestNodeAtPosition(parsed, { character: 12 })).toStrictEqual(
      expect.objectContaining({
        type: "Identifier",
        name: "test",
      }),
    );

    expect(findClosestNodeAtPosition(parsed, { character: 16 })).toStrictEqual(
      expect.objectContaining({
        type: "Literal",
        value: "bar",
      }),
    );

    expect(findClosestNodeAtPosition(parsed, { character: 23 })).toStrictEqual(
      expect.objectContaining({
        type: "Literal",
        value: 12,
      }),
    );
  });
});