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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
import { renderToString, renderToStringAsync, renderToStream } from "../src/server-mock";
const origConsoleError = console.error;const mockConsoleError = jest.fn();
beforeEach(() => {  console.error = mockConsoleError;  mockConsoleError.mockReset();});
afterAll(() => {  console.error = origConsoleError;});
test("renderToString", () => {  const result = renderToString(() => {});
  const err: Error = mockConsoleError.mock.calls[0][0];
  expect(err.message).toContain(    "renderToString is not supported in the browser, returning undefined"  );  expect(result).toBeUndefined();});
test("renderToStringAsync", () => {  const result = renderToStringAsync(() => {});
  const err: Error = mockConsoleError.mock.calls[0][0];
  expect(err.message).toContain(    "renderToStringAsync is not supported in the browser, returning undefined"  );  expect(result).toBeUndefined();});
test("renderToStream", () => {  const result = renderToStream(() => {});
  const err: Error = mockConsoleError.mock.calls[0][0];
  expect(err.message).toContain(    "renderToStream is not supported in the browser, returning undefined"  );  expect(result).toBeUndefined();});