1 files changed, 40 insertions, 0 deletions
diff --git a/dom/indexedDB/test/gtest/TestIDBResult.cpp b/dom/indexedDB/test/gtest/TestIDBResult.cpp
new file mode 100644
index 0000000000..d20b68d4a6
--- /dev/null
+++ b/dom/indexedDB/test/gtest/TestIDBResult.cpp
@@ -0,0 +1,40 @@
+/* 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/. */
+
+#include "IDBResult.h"
+
+#include "gtest/gtest.h"
+
+using mozilla::ErrorResult;
+using namespace mozilla::dom::indexedDB;
+
+TEST(IDBResultTest, ConstructWithValue)
+{
+  IDBResult<int, IDBSpecialValue::Failure> result(0);
+  EXPECT_FALSE(result.isErr() &&
+               result.inspectErr().Is(SpecialValues::Failure));
+  EXPECT_TRUE(result.isOk());
+  EXPECT_EQ(result.unwrap(), 0);
+}
+
+TEST(IDBResultTest, Expand)
+{
+  IDBResult<int, IDBSpecialValue::Failure> narrow{
+      mozilla::Err(SpecialValues::Failure)};
+  IDBResult<int, IDBSpecialValue::Failure, IDBSpecialValue::Invalid> wide{
+      narrow.propagateErr()};
+  EXPECT_TRUE(wide.isErr() && wide.inspectErr().Is(SpecialValues::Failure));
+}
+
+IDBResult<int, IDBSpecialValue::Failure> ThrowException() {
+  return mozilla::Err(IDBException(NS_ERROR_FAILURE));
+}
+
+TEST(IDBResultTest, ThrowException)
+{
+  auto result = ThrowException();
+  EXPECT_TRUE(result.isErr() &&
+              result.inspectErr().Is(SpecialValues::Exception));
+  result.unwrapErr().AsException().SuppressException();
+}