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-rwxr-xr-xgfx/angle/src/common/Optional_unittest.cpp47
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diff --git a/gfx/angle/src/common/Optional_unittest.cpp b/gfx/angle/src/common/Optional_unittest.cpp
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+++ b/gfx/angle/src/common/Optional_unittest.cpp
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+//
+// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Unit tests for ANGLE's Optional helper class.
+//
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#include "common/Optional.h"
+
+namespace
+{
+
+TEST(OptionalTest, BasicInvalid)
+{
+ Optional<int> testInvalid;
+ ASSERT_FALSE(testInvalid.valid());
+ ASSERT_EQ(Optional<int>::Invalid(), testInvalid);
+}
+
+TEST(OptionalTest, BasicValid)
+{
+ Optional<int> testValid(3);
+ ASSERT_TRUE(testValid.valid());
+ ASSERT_EQ(3, testValid.value());
+ ASSERT_NE(Optional<int>::Invalid(), testValid);
+}
+
+TEST(OptionalTest, Copies)
+{
+ Optional<int> testValid(3);
+ Optional<int> testInvalid;
+
+ Optional<int> testCopy = testInvalid;
+ ASSERT_FALSE(testCopy.valid());
+ ASSERT_EQ(testInvalid, testCopy);
+
+ testCopy = testValid;
+ ASSERT_TRUE(testCopy.valid());
+ ASSERT_EQ(3, testCopy.value());
+ ASSERT_EQ(testValid, testCopy);
+}
+
+} // namespace