@niweera/node-asterer/bin/saveAST/saveAST.spec.js

A CLI tool to generate the AST of a given JavaScript File and save it in *.JSON format.

const fs = require("fs");
const path = require("path");
jest.mock("../getInputs/getInputs");
const { saveAST } = require("./saveAST");
const { getInputs } = require("../getInputs/getInputs");
const { runAST } = require("../runAST/runAST");

describe("save AST for given JS file", () => {
  let input_path_, output_path_, config_path_, reference_json;

  beforeEach(async () => {
    const { input_path, output_path, config_path } = await getInputs();
    input_path_ = input_path;
    output_path_ = output_path;
    config_path_ = config_path;
    let reference_raw = fs
      .readFileSync(path.join(__dirname, "__mocks__/reference.json"))
      .toString();
    reference_json = JSON.parse(reference_raw);
    if (fs.existsSync(output_path_)) {
      fs.unlinkSync(output_path_);
    }
  });

  afterEach(() => {
    if (fs.existsSync(output_path_)) {
      fs.unlinkSync(output_path_);
    }
  });

  it("should save the AST JSON object as a JSON file", async () => {
    try {
      const json_object = await runAST(input_path_, config_path_);
      await saveAST(output_path_, json_object);
      expect(fs.existsSync(output_path_)).toBe(true);
      const test_raw = fs.readFileSync(output_path_).toString();
      const test_json = JSON.parse(test_raw);
      expect(reference_json).toStrictEqual(test_json);
    } catch (e) {
      console.log(e);
    }
  });
});