1 files changed, 44 insertions, 0 deletions
diff --git a/ipc/ipdl/test/gtest/TestSyncError.cpp b/ipc/ipdl/test/gtest/TestSyncError.cpp
new file mode 100644
index 0000000000..f7a85598a6
--- /dev/null
+++ b/ipc/ipdl/test/gtest/TestSyncError.cpp
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Test what happens when a sync message fails.
+ */
+
+#include "gtest/gtest.h"
+
+#include "mozilla/_ipdltest/IPDLUnitTest.h"
+#include "mozilla/_ipdltest/PTestSyncErrorChild.h"
+#include "mozilla/_ipdltest/PTestSyncErrorParent.h"
+
+using namespace mozilla::ipc;
+
+namespace mozilla::_ipdltest {
+
+class TestSyncErrorParent : public PTestSyncErrorParent {
+  NS_INLINE_DECL_REFCOUNTING(TestSyncErrorParent, override)
+ private:
+  IPCResult RecvError() final override { return IPC_TEST_FAIL(this); }
+
+  ~TestSyncErrorParent() = default;
+};
+
+class TestSyncErrorChild : public PTestSyncErrorChild {
+  NS_INLINE_DECL_REFCOUNTING(TestSyncErrorChild, override)
+ private:
+  IPCResult RecvStart() final override {
+    EXPECT_FALSE(SendError()) << "Error() should have return false";
+
+    Close();
+
+    return IPC_OK();
+  }
+  ~TestSyncErrorChild() = default;
+};
+
+IPDL_TEST(TestSyncError) { EXPECT_TRUE(mActor->SendStart()); }
+
+}  // namespace mozilla::_ipdltest