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ConversationTest.kt
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ConversationTest.kt
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/*
* 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
*
* https://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 com.example.compose.jetchat
import androidx.activity.ComponentActivity
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.test.assertIsDisplayed
import androidx.compose.ui.test.junit4.createAndroidComposeRule
import androidx.compose.ui.test.onNodeWithContentDescription
import androidx.compose.ui.test.onNodeWithTag
import androidx.compose.ui.test.onNodeWithText
import androidx.compose.ui.test.performClick
import androidx.compose.ui.test.performTouchInput
import androidx.compose.ui.test.swipe
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import com.example.compose.jetchat.conversation.ConversationContent
import com.example.compose.jetchat.conversation.ConversationTestTag
import com.example.compose.jetchat.conversation.ConversationUiState
import com.example.compose.jetchat.data.exampleUiState
import com.example.compose.jetchat.theme.JetchatTheme
import kotlinx.coroutines.flow.MutableStateFlow
import org.junit.Before
import org.junit.Rule
import org.junit.Test
/**
* Checks that the features in the Conversation screen work as expected.
*/
class ConversationTest {
@get:Rule
val composeTestRule = createAndroidComposeRule<ComponentActivity>()
private val themeIsDark = MutableStateFlow(false)
@Before
fun setUp() {
// Launch the conversation screen
composeTestRule.setContent {
JetchatTheme(isDarkTheme = themeIsDark.collectAsStateWithLifecycle(false).value) {
ConversationContent(
uiState = conversationTestUiState,
navigateToProfile = { },
onNavIconPressed = { }
)
}
}
}
@Test
fun app_launches() {
// Check that the conversation screen is visible on launch
composeTestRule.onNodeWithTag(ConversationTestTag).assertIsDisplayed()
}
@Test
fun userScrollsUp_jumpToBottomAppears() {
// Check list is snapped to bottom and swipe up
findJumpToBottom().assertDoesNotExist()
composeTestRule.onNodeWithTag(ConversationTestTag).performTouchInput {
this.swipe(
start = this.center,
end = Offset(this.center.x, this.center.y + 500),
durationMillis = 200
)
}
// Check that the jump to bottom button is shown
findJumpToBottom().assertIsDisplayed()
}
@Test
fun jumpToBottom_snapsToBottomAndDisappears() {
// When the scroll is not snapped to the bottom
composeTestRule.onNodeWithTag(ConversationTestTag).performTouchInput {
this.swipe(
start = this.center,
end = Offset(this.center.x, this.center.y + 500),
durationMillis = 200
)
}
// Snap scroll to the bottom
findJumpToBottom().performClick()
// Check that the button is hidden
findJumpToBottom().assertDoesNotExist()
}
@Test
fun jumpToBottom_snapsToBottomAfterUserInteracted() {
// First swipe
composeTestRule.onNodeWithTag(
testTag = ConversationTestTag,
useUnmergedTree = true // https://issuetracker.google.com/issues/184825850
).performTouchInput {
this.swipe(
start = this.center,
end = Offset(this.center.x, this.center.y + 500),
durationMillis = 200
)
}
// Second, snap to bottom
findJumpToBottom().performClick()
// Open Emoji selector
openEmojiSelector()
// Assert that the list is still snapped to bottom
findJumpToBottom().assertDoesNotExist()
}
@Test
fun changeTheme_scrollIsPersisted() {
// Swipe to show the jump to bottom button
composeTestRule.onNodeWithTag(ConversationTestTag).performTouchInput {
this.swipe(
start = this.center,
end = Offset(this.center.x, this.center.y + 500),
durationMillis = 200
)
}
// Check that the jump to bottom button is shown
findJumpToBottom().assertIsDisplayed()
// Set theme to dark
themeIsDark.value = true
// Check that the jump to bottom button is still shown
findJumpToBottom().assertIsDisplayed()
}
private fun findJumpToBottom() =
composeTestRule.onNodeWithText(
composeTestRule.activity.getString(R.string.jumpBottom),
useUnmergedTree = true
)
private fun openEmojiSelector() =
composeTestRule
.onNodeWithContentDescription(
label = composeTestRule.activity.getString(R.string.emoji_selector_bt_desc),
useUnmergedTree = true // https://issuetracker.google.com/issues/184825850
)
.performClick()
}
/**
* Make the list of messages longer so the test makes sense on tablets.
*/
private val conversationTestUiState = ConversationUiState(
initialMessages = (exampleUiState.messages.plus(exampleUiState.messages)),
channelName = "#composers",
channelMembers = 42
)