### Question:
ScalarOperandNode extends OperandNode { public String getValue() { return value; } ScalarOperandNode(DataType dataType, String value); String getValue(); @Override String toString();  }### Answer:
@Test public void testConstructor() { ScalarOperandNode scalarOperandNode = new ScalarOperandNode(DataType.INTEGER, "5"); assertSame(DataType.INTEGER, scalarOperandNode.getDataType()); assertEquals("5", scalarOperandNode.getValue()); }