Module-Structuring-and-Testing-Data/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js at 7c0d8f569ed21ad7416ab0e4b65099a04e3d9565 · Enice-Codes/Module-Structuring-and-Testing-Data · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
// This statement loads the getCardValue function you wrote in the implement directory.
// We will use the same function, but write tests for it using Jest in this file.
const getCardValue = require("../implement/3-get-card-value");

test("returns 11 for an ace", () => {
  expect(getCardValue("A♠")).toEqual(11);
});

test("returns 10 for face cards", () => {
  expect(getCardValue("J♠")).toEqual(10);
  expect(getCardValue("Q♥")).toEqual(10);
  expect(getCardValue("K♦")).toEqual(10);
});

test("returns the correct value for number cards", () => {
  expect(getCardValue("2♠")).toEqual(2);
  expect(getCardValue("5♥")).toEqual(5);
  expect(getCardValue("10♦")).toEqual(10);
});

test("throws an error for invalid cards", () => {
  expect(() => getCardValue("invalid")).toThrow("Invalid card");
  expect(() => getCardValue("")).toThrow("Invalid card");
  expect(() => getCardValue("1♠")).toThrow("Invalid card");
  expect(() => getCardValue("11♠")).toThrow("Invalid card");
  expect(() => getCardValue("A")).toThrow("Invalid card");
  expect(() => getCardValue("X♠")).toThrow("Invalid card");
});