text: import chai from "chai";
  import add from "../src/add.js";
  const expect = chai.expect;
  
  describe("Add", () => {
      it("adds integer with another integer", () => {
          expect(add(6,4)).to.eq(10);
      });
      it("adds integer with zero", () => {
          expect(add(6,0)).to.eq(6);
      });
      it("adds zero with integer", () => {
          expect(add(0,5)).to.eq(5);
      });
      it("adds zero with zero", () => {
          expect(add(0,0)).to.eq(0);
      });
      it("adds negative integer with another negative integer", () => {
          expect(add(-6,-4)).to.eq(-10);
      });
      it("adds negative integer with zero", () => {
          expect(add(-6,0)).to.eq(-6);
      });
      it("adds zero with negative integer", () => {
          expect(add(0,-5)).to.eq(-5);
      });
      it("throws an error when called with illegal parameters", () => {
          expect(() => add([1], [2])).to.throw();
          expect(() => add({'a':1}, {'b':2})).to.throw();
          expect(() => add('Foo', 'Bar')).to.throw();
      })
  });