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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { AssertionError, assertIsError, assertThrows } from "./mod.ts";
class CustomError extends Error {}class AnotherCustomError extends Error {}
Deno.test("assertIsError() throws when given value isn't error", () => {  assertThrows(    () => assertIsError("Panic!", undefined, "Panic!"),    AssertionError,    `Expected "error" to be an Error object.`,  );
  assertThrows(    () => assertIsError(null),    AssertionError,    `Expected "error" to be an Error object.`,  );
  assertThrows(    () => assertIsError(undefined),    AssertionError,    `Expected "error" to be an Error object.`,  );});
Deno.test("assertIsError() allows subclass of Error", () => {  assertIsError(new AssertionError("Fail!"), Error, "Fail!");});
Deno.test("assertIsError() allows custom error", () => {  assertIsError(new CustomError("failed"), CustomError, "fail");  assertThrows(    () => assertIsError(new AnotherCustomError("failed"), CustomError, "fail"),    AssertionError,    'Expected error to be instance of "CustomError", but was "AnotherCustomError".',  );});
Deno.test("assertIsError() throws with message diff containing double quotes", () => {  assertThrows(    () =>      assertIsError(        new CustomError('error with "double quotes"'),        CustomError,        'doesn\'t include "this message"',      ),    AssertionError,    `Expected error message to include "doesn't include \\"this message\\"", but got "error with \\"double quotes\\"".`,  );});
Deno.test("assertIsError() throws when given value doesn't match regex ", () => {  assertIsError(new AssertionError("Regex test"), Error, /ege/);  assertThrows(    () => assertIsError(new AssertionError("Regex test"), Error, /egg/),    Error,    `Expected error message to include /egg/, but got "Regex test"`,  );});