File size: 3,557 Bytes
1e92f2d
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
/* eslint-env jest */

import { check } from 'next-test-utils'
import path from 'path'
import { nextTestSetup } from 'e2e-utils'

describe('Client navigation scroll', () => {
  const { next } = nextTestSetup({
    files: path.join(__dirname, 'fixture'),
    env: {
      TEST_STRICT_NEXT_HEAD: String(true),
    },
  })

  describe('resets scroll at the correct time', () => {
    it('should reset scroll before the new page runs its lifecycles (<Link />)', async () => {
      const browser = await next.browser('/nav/long-page-to-snap-scroll')

      // Scrolls to item 400 on the page
      await browser
        .waitForElementByCss('#long-page-to-snap-scroll')
        .elementByCss('#scroll-to-item-400')
        .click()

      const scrollPosition = await browser.eval('window.pageYOffset')
      expect(scrollPosition).toBe(7208)

      // Go to snap scroll page
      await browser
        .elementByCss('#goto-snap-scroll-position')
        .click()
        .waitForElementByCss('#scroll-pos-y')

      const snappedScrollPosition = await browser.eval(
        'document.getElementById("scroll-pos-y").innerText'
      )
      expect(snappedScrollPosition).toBe('0')
    })

    it('should reset scroll before the new page runs its lifecycles (Router#push)', async () => {
      const browser = await next.browser('/nav/long-page-to-snap-scroll')

      // Scrolls to item 400 on the page
      await browser
        .waitForElementByCss('#long-page-to-snap-scroll')
        .elementByCss('#scroll-to-item-400')
        .click()

      const scrollPosition = await browser.eval('window.pageYOffset')
      expect(scrollPosition).toBe(7208)

      // Go to snap scroll page
      await browser
        .elementByCss('#goto-snap-scroll-position-imperative')
        .click()
        .waitForElementByCss('#scroll-pos-y')

      const snappedScrollPosition = await browser.eval(
        'document.getElementById("scroll-pos-y").innerText'
      )
      expect(snappedScrollPosition).toBe('0')
    })

    it('should intentionally not reset scroll before the new page runs its lifecycles (Router#push)', async () => {
      const browser = await next.browser('/nav/long-page-to-snap-scroll')

      // Scrolls to item 400 on the page
      await browser
        .waitForElementByCss('#long-page-to-snap-scroll')
        .elementByCss('#scroll-to-item-400')
        .click()

      const scrollPosition = await browser.eval('window.pageYOffset')
      expect(scrollPosition).toBe(7208)

      // Go to snap scroll page
      await browser
        .elementByCss('#goto-snap-scroll-position-imperative-noscroll')
        .click()
        .waitForElementByCss('#scroll-pos-y')

      const snappedScrollPosition = await browser.eval(
        'document.getElementById("scroll-pos-y").innerText'
      )
      expect(snappedScrollPosition).not.toBe('0')
      expect(Number(snappedScrollPosition)).toBeGreaterThanOrEqual(7208)
    })
  })

  it('should scroll to top when the scroll option is set to true', async () => {
    const browser = await next.browser('/nav/shallow-routing')
    await browser.eval(() =>
      document.querySelector('#increaseWithScroll').scrollIntoView()
    )
    const scrollPosition = await browser.eval('window.pageYOffset')

    expect(scrollPosition).toBeGreaterThan(3000)

    await browser.elementByCss('#increaseWithScroll').click()
    await check(async () => {
      const newScrollPosition = await browser.eval('window.pageYOffset')
      return newScrollPosition === 0 ? 'success' : 'fail'
    }, 'success')
  })
})