Add test on isConnected()

Author: bmarty

libraries/matrix/api/src/test/kotlin/io/element/android/libraries/matrix/api/sync/SyncStateTest.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.api.sync
+
+import org.junit.Test
+
+class SyncStateTest {
+    @Test
+    fun `isConnected should return true for Idle`() {
+        assert(SyncState.Idle.isConnected())
+    }
+
+    @Test
+    fun `isConnected should return true for Running`() {
+        assert(SyncState.Running.isConnected())
+    }
+
+    @Test
+    fun `isConnected should return true for Error`() {
+        assert(SyncState.Error.isConnected())
+    }
+
+    @Test
+    fun `isConnected should return true for Terminated`() {
+        assert(SyncState.Terminated.isConnected())
+    }
+
+    @Test
+    fun `isConnected should return false for Offline`() {
+        assert(!SyncState.Offline.isConnected())
+    }
+}