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#include <gmock/gmock.h>
#include <QtDebug>
#include "test/mixxxtest.h"
#include "util/circularsamplebuffer.h"
class CircularSampleBufferTest: public MixxxTest {
public:
CircularSampleBufferTest()
: m_writeValue(CSAMPLE_ZERO),
m_readValue(CSAMPLE_ZERO) {
}
protected:
static const SINT kCapacity;
SINT writeTail(CircularSampleBuffer* pSampleBuffer, SINT size) {
const SampleBuffer::WritableChunk writableChunk(
pSampleBuffer->writeToTail(size));
for (SINT i = 0; i < writableChunk.size(); ++i) {
writableChunk[i] = m_writeValue;
m_writeValue += CSAMPLE_ONE;
}
return writableChunk.size();
}
SINT readHeadAndVerify(CircularSampleBuffer* pSampleBuffer, SINT size) {
const SampleBuffer::ReadableChunk readableChunk(
pSampleBuffer->readFromHead(size));
for (SINT i = 0; i < readableChunk.size(); ++i) {
EXPECT_EQ(readableChunk[i], m_readValue);
m_readValue += CSAMPLE_ONE;
}
return readableChunk.size();
}
SINT readTailAndVerify(CircularSampleBuffer* pSampleBuffer, SINT size) {
const SampleBuffer::ReadableChunk readableChunk(
pSampleBuffer->readFromTail(size));
for (SINT i = readableChunk.size(); i-- > 0; ) {
m_writeValue -= CSAMPLE_ONE;
EXPECT_EQ(readableChunk[i], m_writeValue);
}
return readableChunk.size();
}
void reset(CircularSampleBuffer* pSampleBuffer) {
pSampleBuffer->reset();
m_writeValue = CSAMPLE_ZERO;
m_readValue = CSAMPLE_ZERO;
}
private:
CSAMPLE m_writeValue;
CSAMPLE m_readValue;
};
const SINT CircularSampleBufferTest::kCapacity = 100;
TEST_F(CircularSampleBufferTest, emptyWithoutCapacity) {
CircularSampleBuffer sampleBuffer;
EXPECT_TRUE(sampleBuffer.isEmpty());
sampleBuffer.trim();
EXPECT_TRUE(sampleBuffer.isEmpty());
sampleBuffer.reset();
EXPECT_TRUE(sampleBuffer.isEmpty());
const SampleBuffer::WritableChunk writableChunk(
sampleBuffer.writeToTail(10));
EXPECT_EQ(writableChunk.data(), static_cast<CSAMPLE*>(NULL));
EXPECT_EQ(writableChunk.size(), 0);
EXPECT_TRUE(sampleBuffer.isEmpty());
const SampleBuffer::ReadableChunk readableChunk(
sampleBuffer.readFromHead(10));
EXPECT_EQ(readableChunk.data(), static_cast<const CSAMPLE*>(NULL));
EXPECT_EQ(readableChunk.size(), 0);
EXPECT_TRUE(sampleBuffer.isEmpty());
}
TEST_F(CircularSampleBufferTest, emptyWithCapacity) {
CircularSampleBuffer sampleBuffer(kCapacity);
EXPECT_TRUE(sampleBuffer.isEmpty());
sampleBuffer.trim();
EXPECT_TRUE(sampleBuffer.isEmpty());
sampleBuffer.reset();
EXPECT_TRUE(sampleBuffer.isEmpty());
}
TEST_F(CircularSampleBufferTest, readWriteTrim) {
CircularSampleBuffer sampleBuffer(kCapacity);
SINT writeCount1 = writeTail(&sampleBuffer, kCapacity + 10);
EXPECT_EQ(writeCount1, kCapacity); // buffer is full
EXPECT_FALSE(sampleBuffer.isEmpty());
EXPECT_EQ(sampleBuffer.getTailCapacity(), 0);
SINT readCount1 = readHeadAndVerify(&sampleBuffer, kCapacity - 10);
EXPECT_EQ(readCount1, kCapacity - 10);
EXPECT_FALSE(sampleBuffer.isEmpty());
EXPECT_EQ(sampleBuffer.getTailCapacity(), 0);
SINT writeCount2 = writeTail(&sampleBuffer, kCapacity);
EXPECT_EQ(writeCount2, 0); // no tail capacity left
EXPECT_FALSE(sampleBuffer.isEmpty());
sampleBuffer.trim();
EXPECT_EQ(sampleBuffer.getTailCapacity(), readCount1);
SINT writeCount3 = writeTail(&sampleBuffer, kCapacity);
EXPECT_EQ(writeCount3, readCount1); // buffer has been refilled
EXPECT_FALSE(sampleBuffer.isEmpty());
SINT readCount2 = readHeadAndVerify(&sampleBuffer, kCapacity - 10);
EXPECT_EQ(readCount2, kCapacity - 10);
EXPECT_FALSE(sampleBuffer.isEmpty());
EXPECT_EQ(sampleBuffer.getTailCapacity(), 0);
sampleBuffer.trim();
EXPECT_EQ(sampleBuffer.getTailCapacity(), readCount2);
SINT writeCount4 = writeTail(&sampleBuffer, kCapacity);
EXPECT_EQ(writeCount4, readCount2); // buffer has been refilled
EXPECT_FALSE(sampleBuffer.isEmpty());
SINT readCount3 = readHeadAndVerify(&sampleBuffer, kCapacity + 10);
EXPECT_EQ(readCount3, kCapacity); // whole buffer has been read
EXPECT_TRUE(sampleBuffer.isEmpty());
}
TEST_F(CircularSampleBufferTest, shrink) {
CircularSampleBuffer sampleBuffer(kCapacity);
SINT writeCount1 = writeTail(&sampleBuffer, kCapacity - 10);
EXPECT_EQ(writeCount1, kCapacity - 10);
EXPECT_FALSE(sampleBuffer.isEmpty());
SINT shrinkCount1 = readTailAndVerify(&sampleBuffer, 10);
EXPECT_EQ(shrinkCount1, 10);
SINT readCount1 = readHeadAndVerify(&sampleBuffer, 10);
EXPECT_EQ(readCount1, 10);
EXPECT_FALSE(sampleBuffer.isEmpty());
SINT readCount2 = readHeadAndVerify(&sampleBuffer, kCapacity - 40);
EXPECT_EQ(readCount2, kCapacity - 40);
EXPECT_FALSE(sampleBuffer.isEmpty());
SINT readCount3 = readHeadAndVerify(&sampleBuffer, 20);
EXPECT_EQ(readCount3, 10);
EXPECT_TRUE(sampleBuffer.isEmpty());
SINT writeCount2 = writeTail(&sampleBuffer, 20);
EXPECT_EQ(writeCount2, 20);
EXPECT_FALSE(sampleBuffer.isEmpty());
SINT shrinkCount2 = readTailAndVerify(&sampleBuffer, 21);
EXPECT_EQ(shrinkCount2, 20);
EXPECT_TRUE(sampleBuffer.isEmpty());
}
TEST_F(CircularSampleBufferTest, reset) {
CircularSampleBuffer sampleBuffer(kCapacity);
SINT writeCount = writeTail(&sampleBuffer, 10);
EXPECT_EQ(writeCount, 10);
EXPECT_FALSE(sampleBuffer.isEmpty());
reset(&sampleBuffer);
EXPECT_TRUE(sampleBuffer.isEmpty());
SINT readCount = readHeadAndVerify(&sampleBuffer, 10);
EXPECT_EQ(readCount, 0);
EXPECT_TRUE(sampleBuffer.isEmpty());
}
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