Add WTF::Vector::emplaceAppend()

third_party/WebKit/Source/wtf/VectorTest.cpp

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 680 matching lines @@
 
 TEST(VectorTest, Optional)
 {
     Optional<Vector<int>> vector;
     EXPECT_FALSE(vector);
     vector.emplace(3);
     EXPECT_TRUE(vector);
     EXPECT_EQ(3u, vector->size());
 }
 
+TEST(VectorTest, emplaceAppend)
+{
+    struct Item {
+        Item(int value1, int value2) : value1(value1), value2(value2) {}
+        int value1;
+        int value2;
+    };
+
+    Vector<Item> vector;
+    vector.emplaceAppend(1, 2);
+    vector.emplaceAppend(3, 4);
+
+    EXPECT_EQ(2u, vector.size());
+    EXPECT_EQ(1, vector[0].value1);
+    EXPECT_EQ(2, vector[0].value2);
+    EXPECT_EQ(3, vector[1].value1);
+    EXPECT_EQ(4, vector[1].value2);
+}
+
 static_assert(VectorTraits<int>::canCopyWithMemcpy, "int should be copied with memcopy.");
 static_assert(VectorTraits<char>::canCopyWithMemcpy, "char should be copied with memcpy.");
 static_assert(VectorTraits<LChar>::canCopyWithMemcpy, "LChar should be copied with memcpy.");
 static_assert(VectorTraits<UChar>::canCopyWithMemcpy, "UChar should be copied with memcpy.");
 
 class UnknownType;
 static_assert(VectorTraits<UnknownType*>::canCopyWithMemcpy, "Pointers should be copied with memcpy.");
 
 } // anonymous namespace
 
 } // namespace WTF