@Override
  public String getName() {
    return FUNCTION_NAME;
  }
@Test
  public void testPowerNullLiteral() {
    ExpressionContext expression = RequestContextUtils.getExpression(String.format("power(%s,null)", INT_SV_COLUMN));
    TransformFunction transformFunction = TransformFunctionFactory.get(expression, _dataSourceMap);
    Assert.assertTrue(transformFunction instanceof PowerTransformFunction);
    Assert.assertEquals(transformFunction.getName(), TransformFunctionType.POWER.getName());
    double[] expectedValues = new double[NUM_ROWS];
    for (int i = 0; i < NUM_ROWS; i++) {
      expectedValues[i] = 1;
    }
    RoaringBitmap roaringBitmap = new RoaringBitmap();
    roaringBitmap.add(0L, NUM_ROWS);
    testTransformFunctionWithNull(transformFunction, expectedValues, roaringBitmap);
  }