fix(android): preserve queued upload scheduling

androidApp/src/androidTest/kotlin/dev/obiente/nextcloudnative/SessionCipherInstrumentedTest.kt

@@ -0,0 +1,40 @@
+package dev.obiente.nextcloudnative
+
+import android.util.Base64
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import javax.crypto.AEADBadTagException
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class SessionCipherInstrumentedTest {
+    @Test
+    fun invalidBase64EnvelopeIsDefinitivelyRejected() {
+        val failure = invalidCiphertextFailure("not-base64.invalid")
+
+        assertTrue(failure.cause is IllegalArgumentException)
+    }
+
+    @Test
+    fun authenticatedCiphertextCorruptionIsDefinitivelyRejected() {
+        val cipher = SessionCipher()
+        val encrypted = cipher.encrypt("private upload capability")
+        val parts = encrypted.split('.', limit = 2)
+        val payload = Base64.decode(parts[1], Base64.NO_WRAP).also { bytes ->
+            bytes[0] = (bytes[0].toInt() xor 1).toByte()
+        }
+        val corrupted = parts[0] + "." + Base64.encodeToString(payload, Base64.NO_WRAP)
+
+        val failure = invalidCiphertextFailure(corrupted)
+
+        assertTrue(failure.cause is AEADBadTagException)
+    }
+
+    private fun invalidCiphertextFailure(value: String): InvalidSessionCiphertextException = try {
+        SessionCipher().decrypt(value)
+        error("Corrupt ciphertext was accepted.")
+    } catch (failure: InvalidSessionCiphertextException) {
+        failure
+    }
+}