test: Add test for runtime permission check

Author: google-labs-jules[bot]

firebase-ai/firebase-ai.gradle.kts

@@ -123,6 +123,7 @@ dependencies {
   testImplementation(libs.robolectric)
   testImplementation(libs.truth)
   testImplementation(libs.mockito.core)
+  testImplementation(libs.mockito.kotlin)
 
   androidTestImplementation(libs.androidx.espresso.core)
   androidTestImplementation(libs.androidx.test.junit)

firebase-ai/src/test/java/com/google/firebase/ai/type/LiveSessionTest.kt

@@ -0,0 +1,33 @@
+package com.google.firebase.ai.type
+
+import android.content.Context
+import android.content.pm.PackageManager
+import com.google.firebase.FirebaseApp
+import com.google.firebase.ai.util.doBlocking
+import io.kotest.assertions.throwables.shouldThrow
+import io.ktor.client.plugins.websocket.testing.*
+import kotlinx.coroutines.Dispatchers
+import org.junit.Test
+import org.mockito.kotlin.*
+
+class LiveSessionTest {
+
+    @Test
+    fun `startAudioConversation without permission throws exception`() = doBlocking {
+        val mockContext = mock<Context> {
+            on { checkSelfPermission(android.Manifest.permission.RECORD_AUDIO) } doReturn PackageManager.PERMISSION_DENIED
+        }
+        val mockFirebaseApp = mock<FirebaseApp> {
+            on { applicationContext } doReturn mockContext
+        }
+        val session = LiveSession(
+            session = EmptyWebSockets.client.session,
+            blockingDispatcher = Dispatchers.IO,
+            firebaseApp = mockFirebaseApp
+        )
+
+        shouldThrow<PermissionMissingException> {
+            session.startAudioConversation()
+        }
+    }
+}