Fix and add tests

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/FakeTemporaryMatrixClient.kt

@@ -0,0 +1,20 @@
+/*
+ * 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.libraries.matrix.test
+
+import io.element.android.libraries.matrix.api.TemporaryMatrixClient
+import io.element.android.tests.testutils.lambda.lambdaError
+
+class FakeTemporaryMatrixClient(
+    private val getUrlResult: (String) -> Result<ByteArray> = { lambdaError() },
+    private val closeLambda: () -> Unit = {},
+) : TemporaryMatrixClient {
+    override suspend fun getUrl(url: String): Result<ByteArray> = getUrlResult(url)
+
+    override fun close() = closeLambda()
+}

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/FakeTemporaryMatrixClientFactory.kt

@@ -0,0 +1,17 @@
+/*
+ * 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.libraries.matrix.test
+
+import io.element.android.libraries.matrix.api.TemporaryMatrixClientFactory
+import io.element.android.libraries.matrix.api.TemporaryMatrixClient
+
+class FakeTemporaryMatrixClientFactory(
+    private val createResult: (String) -> Result<TemporaryMatrixClient> = { Result.success(FakeTemporaryMatrixClient()) },
+) : TemporaryMatrixClientFactory {
+    override suspend fun createTemporaryMatrixClient(homeServerUrl: String): Result<TemporaryMatrixClient> = createResult(homeServerUrl)
+}