text: import chai from "chai";
  import upperFirst from "../src/upperFirst.js";
  
  const expect = chai.expect;
  
  // TC-47 and TC-48
  describe("Convert first char of a string to uppercase", () => {
    it("TC-47: Convert the first character of a lowercase string to uppercase", () => {
      expect(upperFirst("text")).to.equal("Text")
    });
    
    it("TC-48: Convert the first character of a uppercase string to uppercase", () => {
      expect(upperFirst("TEXT")).to.equal("TEXT")
    });
  })