roman numeral test file

solution.test.js

const romanToInt = require("./solution");

test("III to equal 3", () => {
  expect(romanToInt("III")).toBe(3);
});

test("IV to equal 4", () => {
  expect(romanToInt("IV")).toBe(4);
});

test("IX to equal 9", () => {
  expect(romanToInt("IX")).toBe(9);
});

test("LVIII to equal 58", () => {
  expect(romanToInt("LVIII")).toBe(58);
});

test("XL to equal 40", () => {
  expect(romanToInt("XL")).toBe(40);
});

test("CM to equal 900", () => {
  expect(romanToInt("CM")).toBe(900);
});