-
Notifications
You must be signed in to change notification settings - Fork 3k
/
MutableCollectionBaseTest.kt
126 lines (109 loc) · 4.02 KB
/
MutableCollectionBaseTest.kt
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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.viewpager2.integration.testapp.test
import androidx.test.espresso.Espresso.onData
import androidx.test.espresso.Espresso.onView
import androidx.test.espresso.action.ViewActions.click
import androidx.test.espresso.assertion.ViewAssertions.matches
import androidx.test.espresso.matcher.ViewMatchers.hasDescendant
import androidx.test.espresso.matcher.ViewMatchers.withId
import androidx.test.espresso.matcher.ViewMatchers.withText
import androidx.viewpager2.integration.testapp.MutableCollectionBaseActivity
import androidx.viewpager2.integration.testapp.R
import org.hamcrest.CoreMatchers.allOf
import org.hamcrest.CoreMatchers.equalTo
import org.junit.Test
/**
* Generic test class for testing [MutableCollectionBaseActivity]s. Swipes from the first to the
* eighth page, increases the count on the eighth page, inserts a new page at the beginning, swipes
* back to the eighth page, swipes back to the first page and finally to the newly inserted page. On
* each page, verifies the page number and the expected count. Implementations simply define the
* Activity under test, see [MutableCollectionViewTest] and [MutableCollectionFragmentTest].
*/
abstract class MutableCollectionBaseTest<T : MutableCollectionBaseActivity>(clazz: Class<T>) :
BaseTest<T>(clazz) {
override val layoutId get() = R.id.viewPager
@Test
fun testKeepsState() {
// increase count of page 1 to 1
verifyPage(1)
increaseCount()
verifyCount(1)
// increase count of page 8 to 3
repeat(7) { swipeToNextPage() }
verifyPage(8)
repeat(3) { increaseCount() }
verifyCount(3)
// insert page at the beginning
choosePage(1)
insertPageBefore()
// check that we're still looking at the page 8
verifyPage(8)
verifyCount(3)
// swipe back to page 7
swipeToPreviousPage()
verifyPage(7)
verifyCount(0)
// swipe back to page 1
repeat(6) { swipeToPreviousPage() }
verifyPage(1)
verifyCount(1)
// check the newly inserted page
swipeToPreviousPage()
verifyPage(10)
verifyCount(0)
}
@Test
fun testKeepCurrentItemVisibleWithoutDiffUtil() {
// disable DiffUtil
toggleDiffUtil()
// increase count of page 1, go to page 2
increaseCount()
verifyPage(1)
verifyCount(1)
swipeToNextPage()
verifyPage(2)
verifyCount(0)
// insert page at the beginning
choosePage(1)
insertPageBefore()
// check that we're still looking at page 2 with count 0
verifyPage(2)
verifyCount(0)
}
private fun increaseCount() {
onView(withId(R.id.buttonCountIncrease)).perform(click())
}
private fun verifyCount(count: Int) {
onView(withId(R.id.textViewCount)).check(matches(withText("$count")))
}
private fun verifyPage(page: Int) {
verifyCurrentPage(hasDescendant(allOf(
withId(R.id.textViewItemText),
withText("item#$page")
)))
}
private fun choosePage(page: Int) {
onView(withId(R.id.itemSpinner)).perform(click())
onData(equalTo("item#$page")).perform(click())
}
private fun insertPageBefore() {
onView(withId(R.id.buttonAddBefore)).perform(click())
}
private fun toggleDiffUtil() {
onView(withId(R.id.useDiffUtil)).perform(click())
}
}