| /* |
| * Copyright 2020 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.compose.foundation.lazy |
| |
| import androidx.compose.foundation.ExperimentalFoundationApi |
| import androidx.compose.foundation.layout.Spacer |
| import androidx.compose.foundation.layout.requiredHeight |
| import androidx.compose.foundation.layout.height |
| import androidx.compose.foundation.layout.size |
| import androidx.compose.foundation.layout.width |
| import androidx.compose.foundation.layout.requiredWidth |
| import androidx.compose.ui.Modifier |
| import androidx.compose.ui.platform.testTag |
| import androidx.compose.ui.test.assertIsDisplayed |
| import androidx.compose.ui.test.assertLeftPositionInRootIsEqualTo |
| import androidx.compose.ui.test.assertTopPositionInRootIsEqualTo |
| import androidx.compose.ui.test.junit4.createComposeRule |
| import androidx.compose.ui.test.onNodeWithTag |
| import androidx.compose.ui.unit.dp |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.MediumTest |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| |
| @OptIn(ExperimentalFoundationApi::class) |
| @MediumTest |
| @RunWith(AndroidJUnit4::class) |
| class LazyGridTest { |
| private val LazyGridTag = "LazyGridTag" |
| |
| @get:Rule |
| val rule = createComposeRule() |
| |
| @Test |
| fun lazyGridShowsOneItem() { |
| val itemTestTag = "itemTestTag" |
| |
| rule.setContent { |
| LazyVerticalGrid( |
| cells = GridCells.Fixed(3) |
| ) { |
| item { |
| Spacer( |
| Modifier.size(10.dp).testTag(itemTestTag) |
| ) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag(itemTestTag) |
| .assertIsDisplayed() |
| } |
| |
| @Test |
| fun lazyGridShowsOneRow() { |
| val items = (1..5).map { it.toString() } |
| |
| rule.setContent { |
| LazyVerticalGrid( |
| cells = GridCells.Fixed(3), |
| modifier = Modifier.height(100.dp).width(300.dp) |
| ) { |
| items(items) { |
| Spacer(Modifier.height(101.dp).testTag(it)) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag("1") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("2") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("3") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("4") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("5") |
| .assertDoesNotExist() |
| } |
| |
| @Test |
| fun lazyGridShowsSecondRowOnScroll() { |
| val items = (1..9).map { it.toString() } |
| |
| rule.setContentWithTestViewConfiguration { |
| LazyVerticalGrid( |
| cells = GridCells.Fixed(3), |
| modifier = Modifier.height(100.dp).testTag(LazyGridTag) |
| ) { |
| items(items) { |
| Spacer(Modifier.height(101.dp).testTag(it)) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag(LazyGridTag) |
| .scrollBy(y = 50.dp, density = rule.density) |
| |
| rule.onNodeWithTag("4") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("5") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("6") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("7") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("8") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("9") |
| .assertDoesNotExist() |
| } |
| |
| @Test |
| fun lazyGridScrollHidesFirstRow() { |
| val items = (1..9).map { it.toString() } |
| |
| rule.setContentWithTestViewConfiguration { |
| LazyVerticalGrid( |
| cells = GridCells.Fixed(3), |
| modifier = Modifier.height(200.dp).testTag(LazyGridTag) |
| ) { |
| items(items) { |
| Spacer(Modifier.height(101.dp).testTag(it)) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag(LazyGridTag) |
| .scrollBy(y = 103.dp, density = rule.density) |
| |
| rule.onNodeWithTag("1") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("2") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("3") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("4") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("5") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("6") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("7") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("8") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("9") |
| .assertIsDisplayed() |
| } |
| |
| @Test |
| fun adaptiveLazyGridFillsAllWidth() { |
| val items = (1..5).map { it.toString() } |
| |
| rule.setContent { |
| LazyVerticalGrid( |
| cells = GridCells.Adaptive(130.dp), |
| modifier = Modifier.height(100.dp).width(300.dp) |
| ) { |
| items(items) { |
| Spacer(Modifier.height(101.dp).testTag(it)) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag("1") |
| .assertLeftPositionInRootIsEqualTo(0.dp) |
| |
| rule.onNodeWithTag("2") |
| .assertLeftPositionInRootIsEqualTo(150.dp) |
| |
| rule.onNodeWithTag("3") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("4") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("5") |
| .assertDoesNotExist() |
| } |
| |
| @Test |
| fun adaptiveLazyGridAtLeastOneColumn() { |
| val items = (1..3).map { it.toString() } |
| |
| rule.setContent { |
| LazyVerticalGrid( |
| cells = GridCells.Adaptive(301.dp), |
| modifier = Modifier.height(100.dp).width(300.dp) |
| ) { |
| items(items) { |
| Spacer(Modifier.height(101.dp).testTag(it)) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag("1") |
| .assertIsDisplayed() |
| |
| rule.onNodeWithTag("2") |
| .assertDoesNotExist() |
| |
| rule.onNodeWithTag("3") |
| .assertDoesNotExist() |
| } |
| |
| @Test |
| fun usedWithArray() { |
| val items = arrayOf("1", "2", "3", "4") |
| |
| val itemSize = with(rule.density) { 15.toDp() } |
| |
| rule.setContent { |
| LazyVerticalGrid( |
| GridCells.Fixed(2), |
| Modifier.requiredWidth(itemSize * 2) |
| ) { |
| items(items) { |
| Spacer(Modifier.requiredHeight(itemSize).testTag(it)) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag("1") |
| .assertTopPositionInRootIsEqualTo(0.dp) |
| .assertLeftPositionInRootIsEqualTo(0.dp) |
| |
| rule.onNodeWithTag("2") |
| .assertTopPositionInRootIsEqualTo(0.dp) |
| .assertLeftPositionInRootIsEqualTo(itemSize) |
| |
| rule.onNodeWithTag("3") |
| .assertTopPositionInRootIsEqualTo(itemSize) |
| .assertLeftPositionInRootIsEqualTo(0.dp) |
| |
| rule.onNodeWithTag("4") |
| .assertTopPositionInRootIsEqualTo(itemSize) |
| .assertLeftPositionInRootIsEqualTo(itemSize) |
| } |
| |
| @Test |
| fun usedWithArrayIndexed() { |
| val items = arrayOf("1", "2", "3", "4") |
| |
| val itemSize = with(rule.density) { 15.toDp() } |
| |
| rule.setContent { |
| LazyVerticalGrid( |
| GridCells.Fixed(2), |
| Modifier.requiredWidth(itemSize * 2) |
| ) { |
| itemsIndexed(items) { index, item -> |
| Spacer(Modifier.requiredHeight(itemSize).testTag("$index*$item")) |
| } |
| } |
| } |
| |
| rule.onNodeWithTag("0*1") |
| .assertTopPositionInRootIsEqualTo(0.dp) |
| .assertLeftPositionInRootIsEqualTo(0.dp) |
| |
| rule.onNodeWithTag("1*2") |
| .assertTopPositionInRootIsEqualTo(0.dp) |
| .assertLeftPositionInRootIsEqualTo(itemSize) |
| |
| rule.onNodeWithTag("2*3") |
| .assertTopPositionInRootIsEqualTo(itemSize) |
| .assertLeftPositionInRootIsEqualTo(0.dp) |
| |
| rule.onNodeWithTag("3*4") |
| .assertTopPositionInRootIsEqualTo(itemSize) |
| .assertLeftPositionInRootIsEqualTo(itemSize) |
| } |
| } |