RecordHistogramTest.java 文件源码-java代码片段

RecordHistogramTest.java 文件源码

java

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项目：chromium-net-for-android 作者:

/**
 * 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());
}