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Diffstat (limited to 'libutils/Vector_test.cpp')
-rw-r--r-- | libutils/Vector_test.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/libutils/Vector_test.cpp b/libutils/Vector_test.cpp new file mode 100644 index 000000000..5336c40c3 --- /dev/null +++ b/libutils/Vector_test.cpp @@ -0,0 +1,139 @@ +/* + * 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" + +#define __STDC_LIMIT_MACROS +#include <stdint.h> +#include <unistd.h> + +#include <android/log.h> +#include <gtest/gtest.h> +#include <utils/Vector.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(3U, vector.size()); + + // copy the vector + other = vector; + + EXPECT_EQ(3U, other.size()); + + // add an element to the first vector + vector.add(4); + + // make sure the sizes are correct + EXPECT_EQ(4U, vector.size()); + EXPECT_EQ(3U, other.size()); + + // add an element to the copy + other.add(5); + + // make sure the sizes are correct + EXPECT_EQ(4U, vector.size()); + EXPECT_EQ(4U, other.size()); + + // make sure the content of both vectors are correct + EXPECT_EQ(vector[3], 4); + EXPECT_EQ(other[3], 5); +} + +TEST_F(VectorTest, SetCapacity_Overflow) { + Vector<int> vector; + EXPECT_DEATH(vector.setCapacity(SIZE_MAX / sizeof(int) + 1), "Assertion failed"); +} + +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(8U, vector.capacity()); + vector.setCapacity(2); + ASSERT_EQ(8U, vector.capacity()); +} + +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(nullptr, 0, SIZE_MAX), "new_size overflow"); +} + +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(nullptr, 0, (SIZE_MAX - 1)), "new_capacity overflow"); +} + +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(nullptr, 0, (SIZE_MAX / 2)), "new_alloc_size overflow"); +} + +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 |