### Question:
AddNotNullConstraintChange extends AbstractChange { public String getConfirmationMessage() { return "Null constraint has been added to " + getTableName() + "." + getColumnName(); } AddNotNullConstraintChange(); String getSchemaName(); void setSchemaName(String schemaName); String getTableName(); void setTableName(String tableName); String getColumnName(); void setColumnName(String columnName); String getDefaultNullValue(); void setDefaultNullValue(String defaultNullValue); String getColumnDataType(); void setColumnDataType(String columnDataType); SqlStatement[] generateStatements(Database database); String getConfirmationMessage();  }### Answer:
@Override @Test public void getConfirmationMessage() throws Exception { AddNotNullConstraintChange change = new AddNotNullConstraintChange(); change.setTableName("TABLE_NAME"); change.setColumnName("COL_HERE"); assertEquals("Null constraint has been added to TABLE_NAME.COL_HERE", change.getConfirmationMessage()); }