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43 lines
1.5 KiB
43 lines
1.5 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "utils/base/arena.h"
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#include "gtest/gtest.h"
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namespace libtextclassifier3 {
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TEST(Arena, Leakage) {
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UnsafeArena arena(32);
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// Grab just 10 bytes.
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EXPECT_EQ(arena.bytes_until_next_allocation(), 32);
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const char* block = arena.Alloc(10);
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EXPECT_NE(block, nullptr);
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EXPECT_EQ(arena.bytes_until_next_allocation(), 22);
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// Grab the rest.
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const char* expected_next_block = block + 10;
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const char* next_block = arena.Alloc(22);
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// If the below test fails, a new block has been allocated for "next_block".
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// This means that the last 22 bytes of the previous block have been lost.
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EXPECT_EQ(next_block, expected_next_block);
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EXPECT_EQ(arena.bytes_until_next_allocation(), 0);
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// Try allocating a 0 bytes block. Arena should remain unchanged.
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const char* null_block = arena.Alloc(0);
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EXPECT_EQ(null_block, nullptr);
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EXPECT_EQ(arena.bytes_until_next_allocation(), 0);
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}
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} // namespace libtextclassifier3
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