text: describe("Mina methods", function () {
      var s;
      beforeEach(function () {
          s = Snap(100, 100);
      });
      afterEach(function () {
          s.remove();
      });
      
      var validateDescriptor = function(obj) {
          expect(obj).to.be.an('object');
          expect(obj.id).to.be.a('string');
          expect(obj.start).to.be.a('number');
          expect(obj.end).to.be.a('number');
          expect(obj.b).to.be.a('number');
          expect(obj.s).to.be.a('number');
          expect(obj.dur).to.be.a('number');
          expect(obj.spd).to.be.a('number');
          
          expect(obj.get).to.be.a('function');
          expect(obj.set).to.be.a('function');
          expect(obj.easing).to.be.a('function');
          expect(obj.status).to.be.a('function');
          expect(obj.speed).to.be.a('function');
          expect(obj.duration).to.be.a('function');
          expect(obj.stop).to.be.a('function');
      };
      
      it("mina", function() {
          var n;
          var animDescriptor = mina(10, 20, 0, 1000, function(newN) {
              n = newN;
          }, function() {});
          
          validateDescriptor(animDescriptor);
          expect(animDescriptor.start).to.be(10);
          expect(animDescriptor.end).to.be(20);
          expect(animDescriptor.b).to.be(0);
          expect(animDescriptor.s).to.be(0);
          expect(animDescriptor.dur).to.be(1000);
          expect(animDescriptor.easing).to.be(mina.linear);
      });
      it("mina.getById", function() {
          var anim1 = mina(10, 20, 0, 1000, function() {}, function() {});
          var anim2 = mina(10, 20, 0, 1000, function() {}, function() {});
          expect(mina.getById(anim1.id)).to.be(anim1);
          expect(mina.getById(anim2.id)).to.be(anim2);
      });
      it("mina.time", function() {
          var now = (new Date).getTime();
          expect(mina.time()).to.be(now);
      });
      it("mina.backin", function() {
          expect(mina.backin(0)).to.be(0);
          expect(mina.backin(1)).to.be(1);
      });
      it("mina.backout", function() {
          expect(mina.backout(0)).to.be(0);
          expect(mina.backout(1)).to.be(1);
      });
      it("mina.bounce", function() {
          expect(mina.bounce(0)).to.be(0);
          expect(mina.bounce(1)).to.be(1);
      });
      it("mina.easein", function() {
          expect(mina.easein(0)).to.be(0);
          expect(mina.easein(1)).to.be(1);
      });
      it("mina.easeinout", function() {
          expect(mina.easeinout(0)).to.be(0);
          expect(mina.easeinout(1)).to.be(1);
      });
      it("mina.easeout", function() {
          expect(mina.easeout(0)).to.be(0);
          expect(mina.easeout(1)).to.be(1);
      });
      it("mina.elastic", function() {
          expect(mina.elastic(0)).to.be(0);
          expect(mina.elastic(1)).to.be(1);
      });
      it("mina.linear", function() {
          expect(mina.linear(0)).to.be(0);
          expect(mina.linear(0.2)).to.be(0.2);
          expect(mina.linear(0.7)).to.be(0.7);
          expect(mina.linear(1)).to.be(1);
      });
  });