diff --git a/src/test/kotlin/sirius/biz/storage/layer1/ReplicationTest.kt b/src/test/kotlin/sirius/biz/storage/layer1/ReplicationTest.kt
new file mode 100644
index 000000000..051d7eb48
--- /dev/null
+++ b/src/test/kotlin/sirius/biz/storage/layer1/ReplicationTest.kt
@@ -0,0 +1,75 @@
+/*
+ * Made with all the love in the world
+ * by scireum in Remshalden, Germany
+ *
+ * Copyright by scireum GmbH
+ * http://www.scireum.de - info@scireum.de
+ */
+
+package sirius.biz.storage.layer1
+
+import org.junit.jupiter.api.Tag
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.extension.ExtendWith
+import sirius.biz.storage.layer1.replication.ReplicationBackgroundLoop
+import sirius.kernel.SiriusExtension
+import sirius.kernel.Tags
+import sirius.kernel.async.BackgroundLoop
+import sirius.kernel.commons.Wait
+import sirius.kernel.di.std.Part
+import java.io.ByteArrayInputStream
+import java.io.InputStreamReader
+import java.nio.charset.StandardCharsets
+import java.time.Duration
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
+
+/**
+ * Tests the [ReplicationBackgroundLoop].
+ */
+@Tag(Tags.NIGHTLY)
+@ExtendWith(SiriusExtension::class)
+class ReplicationTest {
+    @Test
+    fun `updates are replicated correctly`() {
+        val testData = "test".toByteArray(StandardCharsets.UTF_8)
+        storage.getSpace("repl-primary")
+                .upload("repl-update-test", ByteArrayInputStream(testData), testData.size.toLong())
+        awaitReplication()
+        val downloaded = storage.getSpace("reply-secondary").download("repl-update-test")
+        assertTrue { downloaded.isPresent() }
+
+        val res = InputStreamReader(downloaded.get().getInputStream(), StandardCharsets.UTF_8)
+        assertEquals("test", InputStreamReader(downloaded.get().getInputStream(), StandardCharsets.UTF_8).readText())
+    }
+
+    @Test
+    fun `deletes are replicated correctly`() {
+
+        val testData = "test".toByteArray(StandardCharsets.UTF_8)
+        storage.getSpace("repl-primary")
+                .upload("repl-delete-test", ByteArrayInputStream(testData), testData.size.toLong())
+
+        awaitReplication()
+        storage.getSpace("repl-primary").delete("repl-delete-test")
+        awaitReplication()
+        val downloaded = storage.getSpace("reply-secondary").download("repl-delete-test")
+        assertFalse { downloaded.isPresent() }
+    }
+
+    companion object {
+        @Part
+        @JvmStatic
+        private lateinit var storage: ObjectStorage
+
+        fun awaitReplication() {
+            BackgroundLoop.nextExecution(
+                    ReplicationBackgroundLoop::class.java
+            ).await(Duration.ofMinutes(1))
+            // Give the sync some time to actually complete its tasks...
+            Wait.seconds(10.0)
+        }
+
+    }
+}