68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
|
// Copyright 2017 the V8 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.
|
||
|
|
|
||
|
|
#include "src/detachable-vector.h"
|
||
|
|
|
||
|
|
#include "testing/gtest/include/gtest/gtest.h"
|
||
|
|
|
||
|
|
namespace v8 {
|
||
|
|
namespace internal {
|
||
|
|
|
||
|
|
TEST(DetachableVector, ConstructIsEmpty) {
|
||
|
|
DetachableVector<int> v;
|
||
|
|
|
||
|
|
size_t empty_size = 0;
|
||
|
|
EXPECT_EQ(empty_size, v.size());
|
||
|
|
EXPECT_TRUE(v.empty());
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(DetachableVector, PushAddsElement) {
|
||
|
|
DetachableVector<int> v;
|
||
|
|
|
||
|
|
v.push_back(1);
|
||
|
|
|
||
|
|
EXPECT_EQ(1, v.front());
|
||
|
|
EXPECT_EQ(1, v.back());
|
||
|
|
EXPECT_EQ(1, v.at(0));
|
||
|
|
size_t one_size = 1;
|
||
|
|
EXPECT_EQ(one_size, v.size());
|
||
|
|
EXPECT_FALSE(v.empty());
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(DetachableVector, AfterFreeIsEmpty) {
|
||
|
|
DetachableVector<int> v;
|
||
|
|
|
||
|
|
v.push_back(1);
|
||
|
|
v.free();
|
||
|
|
|
||
|
|
size_t empty_size = 0;
|
||
|
|
EXPECT_EQ(empty_size, v.size());
|
||
|
|
EXPECT_TRUE(v.empty());
|
||
|
|
}
|
||
|
|
|
||
|
|
// This test relies on ASAN to detect leaks and double-frees.
|
||
|
|
TEST(DetachableVector, DetachLeaksBackingStore) {
|
||
|
|
DetachableVector<int> v;
|
||
|
|
DetachableVector<int> v2;
|
||
|
|
|
||
|
|
size_t one_size = 1;
|
||
|
|
EXPECT_TRUE(v2.empty());
|
||
|
|
|
||
|
|
// Force allocation of the backing store.
|
||
|
|
v.push_back(1);
|
||
|
|
// Bit-copy the data structure.
|
||
|
|
memcpy(&v2, &v, sizeof(DetachableVector<int>));
|
||
|
|
// The backing store should be leaked here - free was not called.
|
||
|
|
v.detach();
|
||
|
|
|
||
|
|
// We have transferred the backing store to the second vector.
|
||
|
|
EXPECT_EQ(one_size, v2.size());
|
||
|
|
EXPECT_TRUE(v.empty());
|
||
|
|
|
||
|
|
// The destructor of v2 will release the backing store.
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace internal
|
||
|
|
} // namespace v8
|