### Question:
AutoIncrementConstraint implements ColumnConstraint { public String getColumnName() { return columnName; } AutoIncrementConstraint();  AutoIncrementConstraint(String columnName);  AutoIncrementConstraint(
    		String columnName, BigInteger startWith, BigInteger incrementBy); String getColumnName(); AutoIncrementConstraint setColumnName(String columnName); BigInteger getStartWith(); AutoIncrementConstraint setStartWith(BigInteger startWith); BigInteger getIncrementBy(); AutoIncrementConstraint setIncrementBy(BigInteger incrementBy);  }### Answer:
@Test public void ctor() { AutoIncrementConstraint constraint = new AutoIncrementConstraint("COL_NAME"); assertEquals("COL_NAME", constraint.getColumnName()); }