[Link new device] Handle split steps in the SDK

tests/testutils/src/main/kotlin/io/element/android/tests/testutils/ExpectedResult.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2026 Element Creations 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.tests.testutils
+
+import com.google.common.truth.Subject
+
+/**
+ * A helper class to assert expected results in tests. It can be used to assert either the type of result or its value.
+ */
+data class ExpectedResult<T : Any>(
+    val resultClass: Class<out T>,
+    val result: T? = null,
+) {
+    constructor(result: T) : this(result::class.java, result)
+}
+
+fun <T : Any> Subject.match(expectedResult: ExpectedResult<T>) {
+    if (expectedResult.result != null) {
+        isEqualTo(expectedResult.result)
+    } else {
+        isInstanceOf(expectedResult.resultClass)
+    }
+}