text: const should = require("should");
  const occ = require("../lib/occ");
  
  
  describe("testing transformation object", function () {
  
      let trsf;
      before(function () {
          trsf = new occ.Transformation();
          should.exist(trsf);
      });
      describe("a empty transformation", function () {
          it("should have a scale factor of 1.0", function () {
              trsf.scaleFactor.should.equal(1.0);
          });
          it("should have a rotation axis of 0,0,1", function () {
              trsf.scaleFactor.should.equal(1.0);
          });
      });
  
      describe("testing translation [10,20,30]", function () {
          before(function () {
              trsf.makeTranslation([10, 20, 30]);
          });
          it("should have a scale factor of 1.0", function () {
              trsf.scaleFactor.should.equal(1.0);
          });
          /*
          it("should have a rotation axis of 0,0,1", function() {
              trsf.rotationAxis.i.should.equal(0.0);
              trsf.rotationAxis.j.should.equal(0.0);
              trsf.rotationAxis.k.should.equal(1.0);
          });
          it("should have a translationPart at [10,20,30]", function() {
              trsf.translationPart.x.should.equal(10.0);
              trsf.translationPart.y.should.equal(20.0);
              trsf.translationPart.z.should.equal(30.0);
          });
          */
      });
      describe("testing planeMirror o=[10,20,30] dir=[0,0,1", function () {
  
          before(function () {
  
              occ.ZDir.should.eql([0, 0, 1]);
  
              trsf.makePlaneMirror([10, 20, 30], occ.ZDir);
  
          });
  
          it("should have a scale factor of -1.0", function () {
              trsf.scaleFactor.should.eql(-1);
          });
  
          it("should flip coord on the Z axis", function () {
              let v = occ.makeVertex(10, 10, 40);
              let v2 = v.transformed(trsf);
              v2.x.should.eql(v.x);
          })
      });
  });
  