1
import { describe, expect, it } from "vitest";
2
 
3
import { isLogViewerPinnedToLatest } from "@/client/components/log-viewer-scroll";
4
 
5
describe("LogViewer pinned-bottom detection", () => {
6
  it("treats a near-bottom position as pinned with normal padding", () => {
7
    expect(
8
      isLogViewerPinnedToLatest({
9
        scrollTop: 785,
10
        clientHeight: 400,
11
        scrollHeight: 1200,
12
        paddingBottom: 16,
13
      }),
14
    ).toBe(true);
15
  });
16
 
17
  it("treats the jump-button gutter as valid bottom space", () => {
18
    expect(
19
      isLogViewerPinnedToLatest({
20
        scrollTop: 752,
21
        clientHeight: 400,
22
        scrollHeight: 1200,
23
        paddingBottom: 48,
24
      }),
25
    ).toBe(true);
26
  });
27
 
28
  it("does not treat a materially larger gap as pinned", () => {
29
    expect(
30
      isLogViewerPinnedToLatest({
31
        scrollTop: 720,
32
        clientHeight: 400,
33
        scrollHeight: 1200,
34
        paddingBottom: 48,
35
      }),
36
    ).toBe(false);
37
  });
38
});