Add more WTF::PtrUtil unit tests

third_party/WebKit/Source/platform/wtf/PtrUtilTest.cpp

 // Copyright (c) 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/wtf/PtrUtil.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace WTF {
+
+TEST(WTF_PtrUtilTest, canWrapUnique) {
+  auto charPtr = new char;
+  auto wrappedCharPtr = wrapUnique(charPtr);
+
+  ASSERT_TRUE(wrappedCharPtr.get());
+}
+
+TEST(WTF_PtrUtilTest, canWrapUniqueArray) {
+  constexpr size_t bufferSize = 20;
+  auto charArray = new char[bufferSize];
+  auto wrappedCharArray = wrapArrayUnique(charArray);
+
+  ASSERT_TRUE(wrappedCharArray.get());
+}
+
+TEST(WTF_PtrUtilTest, canMakeUnique) {
+  auto charPtr = makeUnique<char>();
+
+  ASSERT_TRUE(charPtr.get());
+}
+
 TEST(WTF_PtrUtilTest, canMakeUniqueArray) {
   constexpr size_t bufferSize = 20;
-  auto charArray = WTF::makeUnique<char[]>(bufferSize);
+  auto charArray = makeUnique<char[]>(bufferSize);
 
   ASSERT_TRUE(charArray.get());
 }
+}