profiler/src/test/unit/activity-slice-tree.test.ts at main · firefox-devtools/profiler · 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
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
62
63
64
65
66
67
68
69
70
71
72
73
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

import { getSlices, printSliceTree } from '../../utils/slice-tree';

function getSlicesEasy(threadCPUPercentage: number[]): string[] {
  const time = threadCPUPercentage.map((_, i) => i);
  const cpuRatio = new Float64Array(threadCPUPercentage.map((p) => p / 100));
  const slices = getSlices([0.05, 0.2, 0.4, 0.6, 0.8], cpuRatio, time);
  return printSliceTree(slices);
}

describe('Activity slice tree', function () {
  it('allocates the right amount of slots', function () {
    expect(getSlicesEasy([0, 0, 6, 0, 0, 0])).toEqual([
      '- 6% for 1.0ms (1 samples): 1.0ms - 2.0ms',
    ]);
    expect(getSlicesEasy([0, 0, 100, 0, 100, 0, 100, 0, 0, 0])).toEqual([
      '- 60% for 5.0ms (5 samples): 1.0ms - 6.0ms',
      '  - 100% for 1.0ms (1 samples): 1.0ms - 2.0ms',
      '  - 100% for 1.0ms (1 samples): 3.0ms - 4.0ms',
      '  - 100% for 1.0ms (1 samples): 5.0ms - 6.0ms',
    ]);
    expect(
      getSlicesEasy([
        0, 0, 6, 0, 0, 0, 0, 34, 86, 34, 0, 0, 0, 0, 12, 9, 0, 0, 0, 7, 0,
      ])
    ).toEqual([
      '- 10% for 18.0ms (18 samples): 1.0ms - 19.0ms',
      '  - 51% for 3.0ms (3 samples): 6.0ms - 9.0ms',
      '    - 86% for 1.0ms (1 samples): 7.0ms - 8.0ms',
    ]);
  });

  it('keeps ancestors of interesting child slices', function () {
    const slices = [
      { start: 0, end: 1, avg: 0.1, sum: 1, parent: null },
      ...Array.from({ length: 19 }, () => ({
        start: 0,
        end: 1,
        avg: 0.2,
        sum: 10,
        parent: null,
      })),
      { start: 0, end: 1, avg: 0.9, sum: 1000, parent: 0 },
    ];

    expect(printSliceTree({ slices, time: [0, 1] })).toEqual([
      '- 10% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '  - 90% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
      '- 20% for 1.0ms (1 samples): 0.0ms - 1.0ms',
    ]);
  });
});