testing navigation

app/build.gradle.kts

@@ -97,6 +97,7 @@ dependencies {
 
     // Navigation Compose
     implementation(libs.androidx.navigation.compose)
+    androidTestImplementation(libs.androidx.navigation.testing)
 
 
 }

app/src/androidTest/java/com/example/rememberme/PeopleDatabaseTest.kt → app/src/androidTest/java/com/example/rememberme/data/PeopleDatabaseTest.kt

@@ -1,4 +1,4 @@
-package com.example.rememberme
+package com.example.rememberme.data
 
 import androidx.room.Room
 import androidx.test.core.app.ApplicationProvider

app/src/androidTest/java/com/example/rememberme/presentation/navgraph/NavGraphTest.kt

@@ -0,0 +1,37 @@
+package com.example.rememberme
+
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.createComposeRule
+import androidx.compose.ui.test.onNodeWithTag
+import androidx.compose.ui.test.onNodeWithText
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.example.rememberme.presentation.navgraph.NavGraph
+import com.example.rememberme.presentation.navgraph.Routes
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class NavGraphTest {
+
+    @get:Rule
+    val composeTestRule = createComposeRule()
+
+    @Test
+    fun testNavigationToOnBoardingScreen() {
+        composeTestRule.setContent {
+            NavGraph(startDestination = Routes.AppStartNavigation.route)
+        }
+
+        composeTestRule.onNodeWithText("OnBoarding Screen").assertIsDisplayed()
+    }
+
+    @Test
+    fun testNavigationToPeopleScreen() {
+        composeTestRule.setContent {
+            NavGraph(startDestination = Routes.PeopleNavigation.route)
+        }
+
+        composeTestRule.onNodeWithTag("PeopleListScreen").assertIsDisplayed()
+    }
+}

app/src/main/java/com/example/rememberme/presentation/navgraph/NavGraph.kt

@@ -1,6 +1,7 @@
 package com.example.rememberme.presentation.navgraph
 
 import androidx.compose.runtime.Composable
+import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
@@ -10,9 +11,10 @@ import com.example.rememberme.presentation.people.PeopleScreen
 
 @Composable
 fun NavGraph(
-    startDestination: String
+    startDestination: String,
+    navController: NavHostController = rememberNavController()
 ){
-    val navController = rememberNavController()
+
     NavHost(
         navController = navController,
         startDestination = startDestination

app/src/main/java/com/example/rememberme/presentation/people/PeopleListScreen.kt

@@ -15,6 +15,7 @@ import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import com.example.rememberme.R
@@ -59,6 +60,7 @@ fun PeopleScreenContent(modifier: Modifier = Modifier) {
         LazyColumn(
             modifier = modifier.padding(it)
                 .fillMaxSize()
+                .testTag("PeopleListScreen")
         ) {
             items(count = peopleList.size) { index ->
                 PeopleListItem(peopleList[index], {})

gradle/libs.versions.toml

@@ -25,6 +25,7 @@ androidx-core-splashscreen = { module = "androidx.core:core-splashscreen", versi
 androidx-core-testing = { module = "androidx.arch.core:core-testing", version.ref = "coreTesting" }
 androidx-lifecycle-viewmodel-compose = { module = "androidx.lifecycle:lifecycle-viewmodel-compose", version.ref = "lifecycleRuntimeKtx" }
 androidx-navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "navigationCompose" }
+androidx-navigation-testing = { module = "androidx.navigation:navigation-testing", version.ref = "navigationCompose" }
 androidx-room-compiler = { module = "androidx.room:room-compiler", version.ref = "roomRuntime" }
 androidx-room-ktx = { module = "androidx.room:room-ktx", version.ref = "roomRuntime" }
 androidx-room-room-testing = { module = "androidx.room:room-testing", version.ref = "roomRuntime" }