@netdata/charts/dist/es6/chartLibraries/dygraph/navigation/select.test.js

Netdata frontend SDK and chart utilities

import selectNavigation from "./select";
describe("select navigation", function () {
  var chartUI;
  beforeEach(function () {
    chartUI = {
      sdk: {
        trigger: jest.fn()
      },
      chart: {
        trigger: jest.fn()
      },
      on: jest.fn(function () {
        return chartUI;
      }),
      off: jest.fn(function () {
        return chartUI;
      })
    };
  });
  it("returns chartUI object from setup", function () {
    var result = selectNavigation(chartUI);
    expect(result).toBe(chartUI);
  });
  it("sets up mousedown event handler", function () {
    selectNavigation(chartUI);
    expect(chartUI.on).toHaveBeenCalledWith("mousedown", expect.any(Function));
  });
});