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fix bitrot from April 2016

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This commit is contained in:
Andrew Meadows 2016-12-28 18:09:31 -08:00
parent 522403cf48
commit 9763566bdb
2 changed files with 20 additions and 16 deletions
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34
tests/shared/src/MovingPercentileTests.cpp
View file

@ -39,19 +39,21 @@ void MovingPercentileTests::testRunningMedian() {
}
float MovingPercentileTests::random() {
return rand() / (float)RAND_MAX;
int64_t MovingPercentileTests::random() {
return ((int64_t) rand() << 48) ^
((int64_t) rand() << 32) ^
((int64_t) rand() << 16) ^
((int64_t) rand());
}
void MovingPercentileTests::testRunningMinForN (int n) {
// Stores the last n samples
QQueue<float> samples;
QQueue<int64_t> samples;
MovingPercentile movingMin (n, 0.0f);
for (int s = 0; s < 3 * n; ++s) {
float sample = random();
int64_t sample = random();
samples.push_back(sample);
if (samples.size() > n)
@ -64,30 +66,32 @@ void MovingPercentileTests::testRunningMinForN (int n) {
movingMin.updatePercentile(sample);
// Calculate the minimum of the moving samples
float expectedMin = std::numeric_limits<float>::max();
int64_t expectedMin = std::numeric_limits<int64_t>::max();
int prevSize = samples.size();
for (auto val : samples)
for (auto val : samples) {
expectedMin = std::min(val, expectedMin);
}
QCOMPARE(samples.size(), prevSize);
QCOMPARE(movingMin.getValueAtPercentile(), expectedMin);
QVERIFY(movingMin.getValueAtPercentile() - expectedMin == 0L);
}
}
void MovingPercentileTests::testRunningMaxForN (int n) {
// Stores the last n samples
QQueue<float> samples;
QQueue<int64_t> samples;
MovingPercentile movingMax (n, 1.0f);
for (int s = 0; s < 10000; ++s) {
float sample = random();
int64_t sample = random();
samples.push_back(sample);
if (samples.size() > n)
if (samples.size() > n) {
samples.pop_front();
}
if (samples.size() == 0) {
QFAIL_WITH_MESSAGE("\n\n\n\tWTF\n\tsamples.size() = " << samples.size() << ", n = " << n);
@ -96,22 +100,22 @@ void MovingPercentileTests::testRunningMaxForN (int n) {
movingMax.updatePercentile(sample);
// Calculate the maximum of the moving samples
float expectedMax = std::numeric_limits<float>::min();
int64_t expectedMax = std::numeric_limits<int64_t>::min();
for (auto val : samples)
expectedMax = std::max(val, expectedMax);
QCOMPARE(movingMax.getValueAtPercentile(), expectedMax);
QVERIFY(movingMax.getValueAtPercentile() - expectedMax == 0L);
}
}
void MovingPercentileTests::testRunningMedianForN (int n) {
// Stores the last n samples
QQueue<float> samples;
QQueue<int64_t> samples;
MovingPercentile movingMedian (n, 0.5f);
for (int s = 0; s < 10000; ++s) {
float sample = random();
int64_t sample = random();
samples.push_back(sample);
if (samples.size() > n)

2
tests/shared/src/MovingPercentileTests.h
View file

@ -25,7 +25,7 @@ private slots:
private:
// Utilities and helper functions
float random();
int64_t random();
void testRunningMinForN (int n);
void testRunningMaxForN (int n);
void testRunningMedianForN (int n);