Add testTag to access composables from UiAutomator

Change-Id: I5125cae0778151b11868b72f74f74f979774625c

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

@@ -39,10 +39,13 @@ import androidx.compose.material3.windowsizeclass.WindowWidthSizeClass
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
+import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.semantics.testTagsAsResourceId
 import androidx.navigation.NavDestination
 import androidx.navigation.NavDestination.Companion.hierarchy
 import androidx.navigation.compose.currentBackStackEntryAsState
@@ -60,7 +63,11 @@ import com.google.samples.apps.nowinandroid.navigation.NiaTopLevelNavigation
 import com.google.samples.apps.nowinandroid.navigation.TOP_LEVEL_DESTINATIONS
 import com.google.samples.apps.nowinandroid.navigation.TopLevelDestination
 
-@OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
+@OptIn(
+    ExperimentalMaterial3Api::class,
+    ExperimentalLayoutApi::class,
+    ExperimentalComposeUiApi::class
+)
 @Composable
 fun NiaApp(windowSizeClass: WindowSizeClass) {
     NiaTheme {
@@ -74,7 +81,9 @@ fun NiaApp(windowSizeClass: WindowSizeClass) {
 
         NiaBackground {
             Scaffold(
-                modifier = Modifier,
+                modifier = Modifier.semantics {
+                    testTagsAsResourceId = true
+                },
                 containerColor = Color.Transparent,
                 contentColor = MaterialTheme.colorScheme.onBackground,
                 bottomBar = {

feature-foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/AuthorsCarousel.kt

@@ -43,6 +43,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.semantics.semantics
@@ -65,7 +66,7 @@ fun AuthorsCarousel(
     modifier: Modifier = Modifier
 ) {
     LazyRow(
-        modifier = modifier,
+        modifier = modifier.testTag("forYou:authors"),
         contentPadding = PaddingValues(24.dp),
         horizontalArrangement = Arrangement.spacedBy(24.dp)
     ) {

feature-foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/ForYouScreen.kt

@@ -65,6 +65,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
@@ -161,7 +162,9 @@ fun ForYouScreen(
                 }
 
                 LazyColumn(
-                    modifier = Modifier.fillMaxSize(),
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .testTag("forYou:feed"),
                 ) {
                     InterestsSelection(
                         interestsSelectionState = interestsSelectionState,
@@ -218,7 +221,8 @@ private fun LazyListScope.InterestsSelection(
                     NiaLoadingWheel(
                         modifier = Modifier
                             .fillMaxWidth()
-                            .wrapContentSize(),
+                            .wrapContentSize()
+                            .testTag("forYou:loading"),
                         contentDesc = stringResource(id = R.string.for_you_loading),
                     )
                 }