98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
/*
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* Copyright (C) 2023 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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*/
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#include <gtest/gtest.h>
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#include <utils/FixedCircularBuffer.h>
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using namespace utils;
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TEST(FixedCircularBufferTest, Simple) {
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FixedCircularBuffer<int> circularBuffer(4);
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EXPECT_EQ(circularBuffer.size(), 0);
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EXPECT_FALSE(circularBuffer.push(1).has_value());
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EXPECT_FALSE(circularBuffer.push(2).has_value());
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EXPECT_FALSE(circularBuffer.push(3).has_value());
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EXPECT_EQ(circularBuffer.size(), 3);
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EXPECT_EQ(circularBuffer.pop(), 1);
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EXPECT_EQ(circularBuffer.pop(), 2);
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EXPECT_EQ(circularBuffer.pop(), 3);
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EXPECT_EQ(circularBuffer.size(), 0);
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EXPECT_FALSE(circularBuffer.push(4).has_value());
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EXPECT_FALSE(circularBuffer.push(5).has_value());
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EXPECT_FALSE(circularBuffer.push(6).has_value());
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EXPECT_FALSE(circularBuffer.push(7).has_value());
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EXPECT_EQ(circularBuffer.size(), 4);
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EXPECT_TRUE(circularBuffer.full());
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EXPECT_EQ(circularBuffer.pop(), 4);
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EXPECT_EQ(circularBuffer.pop(), 5);
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EXPECT_EQ(circularBuffer.pop(), 6);
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EXPECT_EQ(circularBuffer.pop(), 7);
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}
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TEST(FixedCircularBufferTest, Displace) {
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FixedCircularBuffer<int> circularBuffer(4);
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EXPECT_EQ(circularBuffer.size(), 0);
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EXPECT_FALSE(circularBuffer.push(1).has_value());
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EXPECT_FALSE(circularBuffer.push(2).has_value());
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EXPECT_FALSE(circularBuffer.push(3).has_value());
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EXPECT_FALSE(circularBuffer.push(4).has_value());
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EXPECT_TRUE(circularBuffer.full());
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{
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auto v = circularBuffer.push(5);
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EXPECT_EQ(v.value(), 1);
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}
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{
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auto v = circularBuffer.push(6);
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EXPECT_EQ(v.value(), 2);
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}
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EXPECT_TRUE(circularBuffer.full());
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EXPECT_EQ(circularBuffer.pop(), 3);
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EXPECT_EQ(circularBuffer.size(), 3);
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}
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TEST(FixedCircularBufferTest, ZeroCapacity) {
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FixedCircularBuffer<int> circularBuffer(0);
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EXPECT_EQ(circularBuffer.size(), 0);
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EXPECT_EQ(circularBuffer.full(), false);
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auto v = circularBuffer.push(1);
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EXPECT_EQ(v.value(), 1);
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EXPECT_EQ(circularBuffer.size(), 0);
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EXPECT_EQ(circularBuffer.full(), false);
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}
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TEST(FixedCircularBufferTest, Exceptions) {
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#if !defined(NDEBUG) && defined(GTEST_HAS_DEATH_TEST)
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FixedCircularBuffer<int> circularBuffer(4);
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EXPECT_DEATH({
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circularBuffer.pop(); // should assert
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}, "failed");
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circularBuffer.push(1);
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circularBuffer.push(2);
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circularBuffer.push(3);
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circularBuffer.push(4);
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circularBuffer.push(5); // should not assert
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#endif
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}
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