androidTest: Add tests for reusable composable

* Add semantics wherever required to make composable easy to test

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/java/com/aurora/store/compose/composable/ContainedLoadingIndicator.kt

@@ -14,6 +14,9 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.dimensionResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.semantics.stateDescription
 import androidx.compose.ui.tooling.preview.Preview
 import com.aurora.store.R
 import com.aurora.store.compose.preview.PreviewTemplate
@@ -30,8 +33,11 @@ fun ContainedLoadingIndicator(modifier: Modifier = Modifier) {
             .padding(dimensionResource(R.dimen.padding_small)),
         contentAlignment = Alignment.Center
     ) {
+        val description = stringResource(R.string.loading)
         ContainedLoadingIndicator(
-            modifier = Modifier.requiredSize(dimensionResource(R.dimen.icon_size_small))
+            modifier = Modifier
+                .requiredSize(dimensionResource(R.dimen.icon_size_small))
+                .semantics { stateDescription = description }
         )
     }
 }

app/src/main/java/com/aurora/store/compose/composable/Error.kt

@@ -41,7 +41,7 @@ fun Error(
     painter: Painter,
     message: String,
     actionMessage: String? = null,
-    onAction: () -> Unit = {}
+    onAction: (() -> Unit)? = null
 ) {
     Column(
         modifier = modifier
@@ -65,7 +65,7 @@ fun Error(
         )
 
         if (actionMessage != null) {
-            Button(onClick = onAction) {
+            Button(onClick = { if (onAction != null) onAction() }, enabled = onAction != null) {
                 Text(
                     text = actionMessage,
                     maxLines = 1,

app/src/main/java/com/aurora/store/compose/composable/PageIndicator.kt

@@ -22,6 +22,9 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.dimensionResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.semantics.stateDescription
 import androidx.compose.ui.tooling.preview.Preview
 import com.aurora.store.R
 import com.aurora.store.compose.preview.PreviewTemplate
@@ -44,6 +47,7 @@ fun PageIndicator(modifier: Modifier = Modifier, totalPages: Int, currentPage: I
         )
     ) {
         repeat(totalPages) { iteration ->
+            val page = stringResource(R.string.page, iteration)
             val isSelected = currentPage == iteration
             val color by animateColorAsState(
                 targetValue = if (isSelected) {
@@ -67,6 +71,7 @@ fun PageIndicator(modifier: Modifier = Modifier, totalPages: Int, currentPage: I
                     .size(size)
                     .clip(CircleShape)
                     .background(color = color)
+                    .semantics { stateDescription = page }
             )
         }
     }

app/src/main/java/com/aurora/store/compose/composable/app/AnimatedAppIcon.kt

@@ -23,6 +23,8 @@ import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.dimensionResource
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.semantics.testTag
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.tooling.preview.PreviewParameter
 import androidx.compose.ui.tooling.preview.PreviewParameterProvider
@@ -65,7 +67,9 @@ fun AnimatedAppIcon(
 
     Box(modifier = modifier, contentAlignment = Alignment.Center) {
         if (inProgress) {
-            val indicatorModifier = Modifier.fillMaxSize()
+            val indicatorModifier = Modifier
+                .fillMaxSize()
+                .semantics { testTag = "progressIndicator" }
             if (animatedProgress > 0) {
                 CircularProgressIndicator(
                     modifier = indicatorModifier,

app/src/main/java/com/aurora/store/compose/preview/PreviewTemplate.kt

@@ -16,8 +16,9 @@ import com.aurora.store.compose.theme.AuroraTheme
 @Composable
 fun PreviewTemplate(content : @Composable () -> Unit) {
     AuroraTheme {
-        CompositionLocalProvider(LocalAsyncImagePreviewHandler provides coilPreviewProvider) {
-            content()
-        }
+        CompositionLocalProvider(
+            value = LocalAsyncImagePreviewHandler provides coilPreviewProvider,
+            content = content
+        )
     }
 }