1 files changed, 30 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/gtest/SerializesTypeNames.cpp b/dom/heapsnapshot/tests/gtest/SerializesTypeNames.cpp
new file mode 100644
index 000000000..a259c297b
--- /dev/null
+++ b/dom/heapsnapshot/tests/gtest/SerializesTypeNames.cpp
@@ -0,0 +1,30 @@
+/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* 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 that a ubi::Node's typeName gets properly serialized into a core dump.
+
+#include "DevTools.h"
+
+using testing::Property;
+using testing::Return;
+
+DEF_TEST(SerializesTypeNames, {
+    FakeNode node;
+
+    ::testing::NiceMock<MockWriter> writer;
+    EXPECT_CALL(writer, writeNode(Property(&JS::ubi::Node::typeName,
+                                           UTF16StrEq(u"FakeNode")),
+                                  _))
+      .Times(1)
+      .WillOnce(Return(true));
+
+    JS::AutoCheckCannotGC noGC(cx);
+    ASSERT_TRUE(WriteHeapGraph(cx,
+                               JS::ubi::Node(&node),
+                               writer,
+                               /* wantNames = */ true,
+                               /* zones = */ nullptr,
+                               noGC));
+  });