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
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../assert/mod.ts";import { dropWhile } from "./drop_while.ts";
Deno.test("dropWhile() handles Array", () => {  const arr = [1, 2, 3, 4, 5, 6];  const actual = dropWhile(arr, (i) => i !== 2);
  assertEquals(actual, [2, 3, 4, 5, 6]);});
Deno.test("dropWhile() adds two to each num in predicate", () => {  const arr = [1, 2, 3, 4, 5, 6];  const actual = dropWhile(arr, (i) => i + 2 !== 6);
  assertEquals(actual, [4, 5, 6]);});
Deno.test("dropWhile() handles negatives", () => {  const arr = [-5, -6];
  const actual = dropWhile(arr, (i) => i < -4);  assertEquals(actual, []);});
Deno.test("dropWhile() handles no mutation", () => {  const arr = [1, 2, 3, 4, 5, 6];
  const actual = dropWhile(arr, (i) => i !== 4);  assertEquals(actual, [4, 5, 6]);  assertEquals(arr, [1, 2, 3, 4, 5, 6]);});
Deno.test("dropWhile() handles empty input array returns empty array", () => {  const arr: number[] = [];
  const actual = dropWhile(arr, (i) => i > 4);
  assertEquals(actual, []);});
Deno.test("dropWhile() returns empty array when the last element doesn't match the predicate", () => {  const arr = [1, 2, 3, 4];
  const actual = dropWhile(arr, (i) => i !== 4);
  assertEquals(actual, [4]);});
Deno.test("dropWhile() returns the same array when all elements match the predicate", () => {  const arr = [1, 2, 3, 4];
  const actual = dropWhile(arr, (i) => i !== 400);
  assertEquals(actual, []);});