### Question:
BasicContinuousMeasurement extends BasicMeasurement implements ContinuousMeasurement { @Override public boolean isComplete() { return super.isComplete() && d_stdDev != null && d_mean != null && d_stdDev > 0.0; } BasicContinuousMeasurement();  BasicContinuousMeasurement(Double mean, Double stdDev, Integer size); Double getMean(); void setMean(Double mean); Double getStdDev(); void setStdDev(Double stdDev); @Override String toString(); String conditionalFormat(DecimalFormat df, Double mean); boolean isOfType(VariableType type); @Override boolean equals(Object o); @Override int hashCode(); @Override BasicMeasurement clone(); @Override boolean isComplete();  }### Answer:
@Test public void testIsComplete() { assertTrue(d_basicContinuousMeasurement.isComplete()); BasicContinuousMeasurement m1 = new BasicContinuousMeasurement(0.0, 0.0, null); assertFalse(m1.isComplete()); BasicContinuousMeasurement m2 = new BasicContinuousMeasurement(0.0, null, 100); assertFalse(m2.isComplete()); BasicContinuousMeasurement m3 = new BasicContinuousMeasurement(null, 0.0, 100); assertFalse(m3.isComplete()); BasicContinuousMeasurement m4 = new BasicContinuousMeasurement(2.3, 0.15, 0); assertFalse(m4.isComplete()); BasicContinuousMeasurement m5 = new BasicContinuousMeasurement(2.3, -0.2, 30); assertFalse(m5.isComplete()); BasicContinuousMeasurement m6 = new BasicContinuousMeasurement(2.3, 0.0, 30); assertFalse(m6.isComplete()); BasicContinuousMeasurement m7 = new BasicContinuousMeasurement(2.3, 1.0, -30); assertFalse(m7.isComplete()); BasicContinuousMeasurement m8 = new BasicContinuousMeasurement(-2.3, 1.0, 30); assertTrue(m8.isComplete()); }