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90 lines
3.0 KiB
90 lines
3.0 KiB
/*
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* Copyright 2019 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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* Test Histogram
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*/
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#include <iostream>
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#include <gtest/gtest.h>
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#include <audio_utils/Histogram.h>
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using namespace android::audio_utils;
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static constexpr int32_t kBinWidth = 10;
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static constexpr int32_t kNumBins = 20;
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TEST(test_histogram, module_sinki16) {
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Histogram histogram(kNumBins, kBinWidth);
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ASSERT_EQ(kNumBins, histogram.getNumBinsInRange());
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// Is it clear initially?
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for (int i = 0; i < kNumBins; i++) {
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ASSERT_EQ(0, histogram.getCount(i));
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}
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ASSERT_EQ(0, histogram.getCountBelowRange());
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ASSERT_EQ(0, histogram.getCountAboveRange());
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ASSERT_EQ(0, histogram.getCount());
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// Add some items.
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histogram.add(27);
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histogram.add(53);
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histogram.add(171);
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histogram.add(23);
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// Did they count correctly.
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ASSERT_EQ(2, histogram.getCount(2)); // For items 27 and 23
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ASSERT_EQ(3, histogram.getLastItemNumber(2)); // Item 23 was the 0,1,2,3th item added.
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ASSERT_EQ(1, histogram.getCount(5)); // For item 53
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ASSERT_EQ(1, histogram.getLastItemNumber(5)); // item 53 was the second item added.
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ASSERT_EQ(1, histogram.getCount(17)); // For item 171
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ASSERT_EQ(4, histogram.getCount()); // A total of four items were added.
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// Add values out of range.
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histogram.add(-5);
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ASSERT_EQ(1, histogram.getCountBelowRange()); // -5 is below zero.
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ASSERT_EQ(0, histogram.getCountAboveRange());
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ASSERT_EQ(5, histogram.getCount());
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histogram.add(200);
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ASSERT_EQ(1, histogram.getCountBelowRange());
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ASSERT_EQ(1, histogram.getCountAboveRange()); // 200 is above top bin
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ASSERT_EQ(6, histogram.getCount());
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// Try to read values out of range. Should not crash.
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// Legal index range is 0 to numBins-1
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histogram.add(-1);
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histogram.add(kNumBins);
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ASSERT_EQ(0, histogram.getCount(-1)); // edge
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ASSERT_EQ(0, histogram.getCount(kNumBins)); // edge
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ASSERT_EQ(0, histogram.getCount(-1234)); // extreme
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ASSERT_EQ(0, histogram.getCount(98765)); // extreme
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ASSERT_EQ(0, histogram.getLastItemNumber(-1));
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ASSERT_EQ(0, histogram.getLastItemNumber(kNumBins));
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// Clear all the counts.
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histogram.clear();
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// Is it clear?
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for (int i = 0; i < kNumBins; i++) {
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ASSERT_EQ(0, histogram.getCount(i));
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}
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ASSERT_EQ(0, histogram.getCountBelowRange());
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ASSERT_EQ(0, histogram.getCountAboveRange());
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ASSERT_EQ(0, histogram.getCount());
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}
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