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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "Vector_test"
#include <utils/Vector.h>
#include <cutils/log.h>
#include <gtest/gtest.h>
#include <unistd.h>
namespace android {
class VectorTest : public testing::Test {
protected:
virtual void SetUp() {
}
virtual void TearDown() {
}
public:
};
TEST_F(VectorTest, CopyOnWrite_CopyAndAddElements) {
Vector<int> vector;
Vector<int> other;
vector.setCapacity(8);
vector.add(1);
vector.add(2);
vector.add(3);
EXPECT_EQ(vector.size(), 3);
// copy the vector
other = vector;
EXPECT_EQ(other.size(), 3);
// add an element to the first vector
vector.add(4);
// make sure the sizes are correct
EXPECT_EQ(vector.size(), 4);
EXPECT_EQ(other.size(), 3);
// add an element to the copy
other.add(5);
// make sure the sizes are correct
EXPECT_EQ(vector.size(), 4);
EXPECT_EQ(other.size(), 4);
// make sure the content of both vectors are correct
EXPECT_EQ(vector[3], 4);
EXPECT_EQ(other[3], 5);
}
// TODO: gtest isn't capable of parsing Abort messages formatted by
// Android (fails differently on host and target), so we always need to
// use an empty error message for death tests.
TEST_F(VectorTest, SetCapacity_Overflow) {
Vector<int> vector;
EXPECT_DEATH(vector.setCapacity(SIZE_MAX / sizeof(int) + 1), "");
}
TEST_F(VectorTest, SetCapacity_ShrinkBelowSize) {
Vector<int> vector;
vector.add(1);
vector.add(2);
vector.add(3);
vector.add(4);
vector.setCapacity(8);
ASSERT_EQ(8, vector.capacity());
vector.setCapacity(2);
ASSERT_EQ(8, vector.capacity());
}
// NOTE: All of the tests below are useless because of the "TODO" above.
// We have no way of knowing *why* the process crashed. Given that we're
// inserting a NULL array, we'll fail with a SIGSEGV eventually. We need
// the ability to make assertions on the abort message to make sure we're
// failing for the right reasons.
TEST_F(VectorTest, _grow_OverflowSize) {
Vector<int> vector;
vector.add(1);
// Checks that the size calculation (not the capacity calculation) doesn't
// overflow : the size here will be (1 + SIZE_MAX).
//
// EXPECT_DEATH(vector.insertArrayAt(NULL, 0, SIZE_MAX), "new_size_overflow");
EXPECT_DEATH(vector.insertArrayAt(NULL, 0, SIZE_MAX), "");
}
TEST_F(VectorTest, _grow_OverflowCapacityDoubling) {
Vector<int> vector;
// This should fail because the calculated capacity will overflow even though
// the size of the vector doesn't.
//
// EXPECT_DEATH(vector.insertArrayAt(NULL, 0, (SIZE_MAX - 1)), "new_capacity_overflow");
EXPECT_DEATH(vector.insertArrayAt(NULL, 0, (SIZE_MAX - 1)), "");
}
TEST_F(VectorTest, _grow_OverflowBufferAlloc) {
Vector<int> vector;
// This should fail because the capacity * sizeof(int) overflows, even
// though the capacity itself doesn't.
//
// EXPECT_DEATH(vector.insertArrayAt(NULL, 0, (SIZE_MAX / 2)), "new_alloc_size overflow");
EXPECT_DEATH(vector.insertArrayAt(NULL, 0, (SIZE_MAX / 2)), "");
}
TEST_F(VectorTest, editArray_Shared) {
Vector<int> vector1;
vector1.add(1);
vector1.add(2);
vector1.add(3);
vector1.add(4);
Vector<int> vector2 = vector1;
ASSERT_EQ(vector1.array(), vector2.array());
// We must make a copy here, since we're not the exclusive owners
// of this array.
ASSERT_NE(vector1.editArray(), vector2.editArray());
// Vector doesn't implement operator ==.
ASSERT_EQ(vector1.size(), vector2.size());
for (size_t i = 0; i < vector1.size(); ++i) {
EXPECT_EQ(vector1[i], vector2[i]);
}
}
} // namespace android
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