Use random port for google drive

Author: prof18

feedSync/googledrive/src/jvmMain/kotlin/com/prof18/feedflow/feedsync/googledrive/GoogleDriveDataSourceJvmImpl.kt

@@ -36,9 +36,7 @@ class GoogleDriveDataSourceJvmImpl(
     override suspend fun startAuthFlow(): Boolean = withContext(dispatcherProvider.io) {
         try {
             val flow = buildAuthFlow()
-
-            @Suppress("MagicNumber")
-            val receiver = LocalServerReceiver.Builder().setPort(8888).build()
+            val receiver = buildLocalServerReceiver()
             val credential = AuthorizationCodeInstalledApp(flow, receiver).authorize("user")
 
             driveService = Drive.Builder(httpTransport, jsonFactory, credential)
@@ -183,3 +181,5 @@ internal fun requireGoogleDriveBackupFileId(
 ): String = fileId ?: throw GoogleDriveDownloadException(
     errorMessage = "No Google Drive backup file found for '$fileName'",
 )
+
+internal fun buildLocalServerReceiver(): LocalServerReceiver = LocalServerReceiver.Builder().build()

feedSync/googledrive/src/jvmTest/kotlin/com/prof18/feedflow/feedsync/googledrive/GoogleDriveDataSourceJvmImplTest.kt

@@ -30,4 +30,11 @@ class GoogleDriveDataSourceJvmImplTest {
             exception.message,
         )
     }
+
+    @Test
+    fun `buildLocalServerReceiver uses dynamic free port`() {
+        val receiver = buildLocalServerReceiver()
+
+        assertEquals(-1, receiver.port)
+    }
 }