text: import { BoundingSphere } from "../../Source/Cesium.js";
  import { Color } from "../../Source/Cesium.js";
  import { defined } from "../../Source/Cesium.js";
  import { Ellipsoid } from "../../Source/Cesium.js";
  import { Matrix3 } from "../../Source/Cesium.js";
  import { Simon1994PlanetaryPositions } from "../../Source/Cesium.js";
  import { Transforms } from "../../Source/Cesium.js";
  import { Moon } from "../../Source/Cesium.js";
  import createScene from "../createScene.js";
  
  describe(
    "Scene/Moon",
    function () {
      var scene;
      var backgroundColor = [255, 0, 0, 255];
  
      beforeAll(function () {
        scene = createScene();
        Color.unpack(backgroundColor, 0, scene.backgroundColor);
      });
  
      afterAll(function () {
        scene.destroyForSpecs();
      });
  
      function lookAtMoon(camera, date) {
        var icrfToFixed = new Matrix3();
        if (!defined(Transforms.computeIcrfToFixedMatrix(date, icrfToFixed))) {
          Transforms.computeTemeToPseudoFixedMatrix(date, icrfToFixed);
        }
  
        var moonPosition = Simon1994PlanetaryPositions.computeMoonPositionInEarthInertialFrame(
          date
        );
        Matrix3.multiplyByVector(icrfToFixed, moonPosition, moonPosition);
  
        camera.viewBoundingSphere(
          new BoundingSphere(moonPosition, Ellipsoid.MOON.maximumRadius)
        );
      }
  
      it("default constructs the moon", function () {
        var moon = new Moon();
        expect(moon.show).toEqual(true);
        expect(moon.textureUrl).toContain("Assets/Textures/moonSmall.jpg");
        expect(moon.ellipsoid).toBe(Ellipsoid.MOON);
        expect(moon.onlySunLighting).toEqual(true);
      });
  
      it("draws in 3D", function () {
        expect(scene).toRender(backgroundColor);
        scene.moon = new Moon();
  
        lookAtMoon(scene.camera, scene.frameState.time);
  
        expect(scene).notToRender(backgroundColor);
        scene.moon = scene.moon.destroy();
      });
  
      it("does not render when show is false", function () {
        expect(scene).toRender(backgroundColor);
        scene.moon = new Moon();
  
        lookAtMoon(scene.camera, scene.frameState.time);
  
        expect(scene).notToRender(backgroundColor);
        scene.moon.show = false;
  
        expect(scene).toRender(backgroundColor);
        scene.moon = scene.moon.destroy();
      });
  
      it("isDestroyed", function () {
        var moon = new Moon();
        expect(moon.isDestroyed()).toEqual(false);
        moon.destroy();
        expect(moon.isDestroyed()).toEqual(true);
      });
    },
    "WebGL"
  );
  