text: describe('pingPong', function() {
      it("is true for an input that is divisible by 15", function() {
          expect(pingPong(15)).to.equal(true);
      });
  
      it("is true for an input that is divisible by 5", function() {
          expect(pingPong(5)).to.equal(true);
      });
  
      it("is true for an input that is divisible by 3", function() {
          expect(pingPong(3)).to.equal(true);
      });
  
      it("is false for any input not divisible by 3, 5, or 15", function() {
          expect(pingPong(16)).to.equal(false);
      });
  });
  