/** Tests recording of boolean histograms. */
@SmallTest
public void testRecordBooleanHistogram() {
String histogram = "HelloWorld.BooleanMetric";
HistogramDelta falseCount = new HistogramDelta(histogram, 0);
HistogramDelta trueCount = new HistogramDelta(histogram, 1);
assertEquals(0, trueCount.getDelta());
assertEquals(0, falseCount.getDelta());
RecordHistogram.recordBooleanHistogram(histogram, true);
assertEquals(1, trueCount.getDelta());
assertEquals(0, falseCount.getDelta());
RecordHistogram.recordBooleanHistogram(histogram, true);
assertEquals(2, trueCount.getDelta());
assertEquals(0, falseCount.getDelta());
RecordHistogram.recordBooleanHistogram(histogram, false);
assertEquals(2, trueCount.getDelta());
assertEquals(1, falseCount.getDelta());
}
