| 1 | import ExpoRandom from '../ExpoRandom';
|
| 2 | import * as Random from '../Random';
|
| 3 |
|
| 4 | jest.mock('../ExpoRandom', () => ({
|
| 5 | getRandomBytesAsync: jest.fn(async () => 0),
|
| 6 | getRandomBase64StringAsync: jest.fn(async () => 0),
|
| 7 | }));
|
| 8 |
|
| 9 | jest.mock('base64-js', () => ({ toByteArray: jest.fn(() => {}) }));
|
| 10 |
|
| 11 | it(`accepts valid byte counts`, async () => {
|
| 12 | for (const value of [0, 1024, 512.5]) {
|
| 13 | await expect(Random.getRandomBytesAsync(value));
|
| 14 | expect(ExpoRandom.getRandomBytesAsync).lastCalledWith(Math.floor(value));
|
| 15 | }
|
| 16 | });
|
| 17 |
|
| 18 | it(`falls back to an alternative native method when getRandomBytesAsync is not available`, async () => {
|
| 19 | ExpoRandom.getRandomBytesAsync = null;
|
| 20 | await expect(Random.getRandomBytesAsync(1024));
|
| 21 | expect(ExpoRandom.getRandomBase64StringAsync).toHaveBeenCalled();
|
| 22 | });
|
| 23 |
|
| 24 | it(`asserts invalid byte count errors`, async () => {
|
| 25 | await expect(Random.getRandomBytesAsync(-1)).rejects.toThrowError(TypeError);
|
| 26 | await expect(Random.getRandomBytesAsync(1025)).rejects.toThrowError(TypeError);
|
| 27 | await expect(Random.getRandomBytesAsync('invalid' as any)).rejects.toThrowError(TypeError);
|
| 28 | await expect(Random.getRandomBytesAsync(null as any)).rejects.toThrowError(TypeError);
|
| 29 | await expect(Random.getRandomBytesAsync({} as any)).rejects.toThrowError(TypeError);
|
| 30 | await expect(Random.getRandomBytesAsync(NaN)).rejects.toThrowError(TypeError);
|
| 31 | });
|