Show snackbar in large screen

app/src/main/kotlin/com/google/samples/apps/nowinandroid/ui/NiaApp.kt

@@ -80,12 +80,16 @@ fun NiaApp(
     appState: NiaAppState,
     modifier: Modifier = Modifier,
     windowAdaptiveInfo: WindowAdaptiveInfo = currentWindowAdaptiveInfo(),
+    bottomSystemUiHeight: WindowInsets = WindowInsets.safeDrawing.only(WindowInsetsSides.Bottom),
 ) {
     val shouldShowGradientBackground =
         appState.currentTopLevelDestination == TopLevelDestination.FOR_YOU
     var showSettingsDialog by rememberSaveable { mutableStateOf(false) }
 
-    NiaBackground(modifier = modifier) {
+    NiaBackground(
+        modifier = modifier
+            .windowInsetsPadding(bottomSystemUiHeight),
+    ) {
         NiaGradientBackground(
             gradientColors = if (shouldShowGradientBackground) {
                 LocalGradientColors.current

app/src/testDemo/kotlin/com/google/samples/apps/nowinandroid/ui/SnackbarInsetsScreenshotTests.kt

@@ -32,14 +32,10 @@ import androidx.compose.foundation.layout.windowInsetsEndWidth
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.layout.windowInsetsStartWidth
 import androidx.compose.foundation.layout.windowInsetsTopHeight
-import androidx.compose.material3.SnackbarDuration.Indefinite
-import androidx.compose.material3.SnackbarHostState
-import androidx.compose.material3.adaptive.ExperimentalMaterial3AdaptiveApi
 import androidx.compose.material3.adaptive.Posture
 import androidx.compose.material3.adaptive.WindowAdaptiveInfo
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -68,15 +64,15 @@ import com.google.samples.apps.nowinandroid.core.data.util.NetworkMonitor
 import com.google.samples.apps.nowinandroid.core.data.util.TimeZoneMonitor
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
 import com.google.samples.apps.nowinandroid.core.testing.util.DefaultRoborazziOptions
+import com.google.samples.apps.nowinandroid.core.testing.util.TestNetworkMonitor
 import com.google.samples.apps.nowinandroid.uitesthiltmanifest.HiltComponentActivity
 import dagger.hilt.android.testing.BindValue
 import dagger.hilt.android.testing.HiltAndroidRule
 import dagger.hilt.android.testing.HiltAndroidTest
 import dagger.hilt.android.testing.HiltTestApplication
-import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking
+import org.junit.After
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -121,8 +117,7 @@ class SnackbarInsetsScreenshotTests {
     @get:Rule(order = 2)
     val composeTestRule = createAndroidComposeRule<HiltComponentActivity>()
 
-    @Inject
-    lateinit var networkMonitor: NetworkMonitor
+    private lateinit var networkMonitor: NetworkMonitor
 
     @Inject
     lateinit var timeZoneMonitor: TimeZoneMonitor
@@ -140,6 +135,9 @@ class SnackbarInsetsScreenshotTests {
     fun setup() {
         hiltRule.inject()
 
+        // Set network connection to online
+        networkMonitor = TestNetworkMonitor().apply { setConnected(true) }
+
         // Configure user data
         runBlocking {
             userDataRepository.setShouldHideOnboarding(true)
@@ -156,85 +154,63 @@ class SnackbarInsetsScreenshotTests {
         TimeZone.setDefault(TimeZone.getTimeZone("UTC"))
     }
 
+    @After
+    fun resetConnectionOnline() {
+        networkMonitor = TestNetworkMonitor().apply { setConnected(true) }
+    }
+
     @Test
     fun phone_noSnackbar() {
-        val snackbarHostState = SnackbarHostState()
         testSnackbarScreenshotWithSize(
-            snackbarHostState,
             400.dp,
             500.dp,
             "insets_snackbar_compact_medium_noSnackbar",
-            action = { },
         )
     }
 
     @Test
     fun snackbarShown_phone() {
-        val snackbarHostState = SnackbarHostState()
+        // Set network connection to offline
+        networkMonitor = TestNetworkMonitor().apply { setConnected(false) }
         testSnackbarScreenshotWithSize(
-            snackbarHostState,
             400.dp,
             500.dp,
             "insets_snackbar_compact_medium",
-        ) {
-            snackbarHostState.showSnackbar(
-                "This is a test snackbar message",
-                actionLabel = "Action Label",
-                duration = Indefinite,
-            )
-        }
+        )
     }
 
     @Test
     fun snackbarShown_foldable() {
-        val snackbarHostState = SnackbarHostState()
+        // Set network connection to offline
+        networkMonitor = TestNetworkMonitor().apply { setConnected(false) }
         testSnackbarScreenshotWithSize(
-            snackbarHostState,
             600.dp,
             600.dp,
             "insets_snackbar_medium_medium",
-        ) {
-            snackbarHostState.showSnackbar(
-                "This is a test snackbar message",
-                actionLabel = "Action Label",
-                duration = Indefinite,
-            )
-        }
+        )
     }
 
     @Test
     fun snackbarShown_tablet() {
-        val snackbarHostState = SnackbarHostState()
+        // Set network connection to offline
+        networkMonitor = TestNetworkMonitor().apply { setConnected(false) }
         testSnackbarScreenshotWithSize(
-            snackbarHostState,
             900.dp,
             900.dp,
             "insets_snackbar_expanded_expanded",
-        ) {
-            snackbarHostState.showSnackbar(
-                "This is a test snackbar message",
-                actionLabel = "Action Label",
-                duration = Indefinite,
-            )
-        }
+        )
     }
 
-    @OptIn(ExperimentalMaterial3AdaptiveApi::class)
     private fun testSnackbarScreenshotWithSize(
-        snackbarHostState: SnackbarHostState,
         width: Dp,
         height: Dp,
         screenshotName: String,
-        action: suspend () -> Unit,
     ) {
-        lateinit var scope: CoroutineScope
         composeTestRule.setContent {
             CompositionLocalProvider(
                 // Replaces images with placeholders
                 LocalInspectionMode provides true,
             ) {
-                scope = rememberCoroutineScope()
-
                 DeviceConfigurationOverride(
                     DeviceConfigurationOverride.ForcedSize(DpSize(width, height)),
                 ) {
@@ -269,12 +245,9 @@ class SnackbarInsetsScreenshotTests {
                                     userNewsResourceRepository = userNewsResourceRepository,
                                     timeZoneMonitor = timeZoneMonitor,
                                 )
+                                // Replace NiaApp for using Background, which contains SnackBar
                                 NiaApp(
                                     appState = appState,
-                                    snackbarHostState = snackbarHostState,
-                                    showSettingsDialog = false,
-                                    onSettingsDismissed = {},
-                                    onTopAppBarActionClick = {},
                                     windowAdaptiveInfo = WindowAdaptiveInfo(
                                         windowSizeClass = WindowSizeClass.compute(
                                             maxWidth.value,
@@ -291,10 +264,6 @@ class SnackbarInsetsScreenshotTests {
             }
         }
 
-        scope.launch {
-            action()
-        }
-
         composeTestRule.onNodeWithTag("root")
             .captureRoboImage(
                 "src/testDemo/screenshots/$screenshotName.png",