### Question:
DefaultResultSetHandler implements ResultSetHandler { Object createParameterizedResultObject(ResultSetWrapper rsw, Class<?> resultType, List<ResultMapping> constructorMappings, List<Class<?>> constructorArgTypes, List<Object> constructorArgs, String columnPrefix) { boolean foundValues = false; for (ResultMapping constructorMapping : constructorMappings) { final Class<?> parameterType = constructorMapping.getJavaType(); final String column = constructorMapping.getColumn(); final Object value; try { if (constructorMapping.getNestedQueryId() != null) { value = getNestedQueryConstructorValue(rsw.getResultSet(), constructorMapping, columnPrefix); } else if (constructorMapping.getNestedResultMapId() != null) { final ResultMap resultMap = configuration.getResultMap(constructorMapping.getNestedResultMapId()); value = getRowValue(rsw, resultMap); } else { final TypeHandler<?> typeHandler = constructorMapping.getTypeHandler(); value = typeHandler.getResult(rsw.getResultSet(), prependPrefix(column, columnPrefix)); } } catch (ResultMapException e) { throw new ExecutorException("Could not process result for mapping: " + constructorMapping, e); } catch (SQLException e) { throw new ExecutorException("Could not process result for mapping: " + constructorMapping, e); } constructorArgTypes.add(parameterType); constructorArgs.add(value); foundValues = value != null || foundValues; } return foundValues ? objectFactory.create(resultType, constructorArgTypes, constructorArgs) : null; } DefaultResultSetHandler(Executor executor, MappedStatement mappedStatement, ParameterHandler parameterHandler, ResultHandler<?> resultHandler, BoundSql boundSql,
                                 RowBounds rowBounds); @Override void handleOutputParameters(CallableStatement cs); @Override List<Object> handleResultSets(Statement stmt); @Override Cursor<E> handleCursorResultSets(Statement stmt); void handleRowValues(ResultSetWrapper rsw, ResultMap resultMap, ResultHandler<?> resultHandler, RowBounds rowBounds, ResultMapping parentMapping); ResultMap resolveDiscriminatedResultMap(ResultSet rs, ResultMap resultMap, String columnPrefix);  }### Answer:
@Test public void shouldThrowExceptionWithColumnName() throws Exception { final MappedStatement ms = getMappedStatement(); final RowBounds rowBounds = new RowBounds(0, 100); final DefaultResultSetHandler defaultResultSetHandler = new DefaultResultSetHandler(null, ms, null, null, null, rowBounds); final ResultSetWrapper rsw = mock(ResultSetWrapper.class); when(rsw.getResultSet()).thenReturn(mock(ResultSet.class)); final ResultMapping resultMapping = mock(ResultMapping.class); final TypeHandler typeHandler = mock(TypeHandler.class); when(resultMapping.getColumn()).thenReturn("column"); when(resultMapping.getTypeHandler()).thenReturn(typeHandler); when(typeHandler.getResult(any(ResultSet.class), any(String.class))).thenThrow(new SQLException("exception")); List<ResultMapping> constructorMappings = Collections.singletonList(resultMapping); try { defaultResultSetHandler.createParameterizedResultObject(rsw, null, constructorMappings, null, null, null); Assert.fail("Should have thrown ExecutorException"); } catch (Exception e) { Assert.assertTrue("Expected ExecutorException", e instanceof ExecutorException); Assert.assertTrue("", e.getMessage().contains("mapping: " + resultMapping.toString())); } }