| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.csv.issues; |
| |
| import static org.junit.jupiter.api.Assertions.assertThrows; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| |
| import org.apache.commons.csv.CSVFormat; |
| import org.apache.commons.csv.DuplicateHeaderMode; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * When {@link CSVFormat#withHeader(String...)} is not null; duplicate headers |
| * with empty strings should not be allowed. |
| * |
| * @see <a href="https://issues.apache.org/jira/browse/CSV-264">Jira Ticker</a> |
| */ |
| public class JiraCsv264Test { |
| |
| private static final String CSV_STRING = "\"\",\"B\",\"\"\n" + |
| "\"1\",\"2\",\"3\"\n" + |
| "\"4\",\"5\",\"6\""; |
| |
| /** |
| * A CSV file with a random gap in the middle. |
| */ |
| private static final String CSV_STRING_GAP = "\"A\",\"B\",\"\",\"\",\"E\"\n" + |
| "\"1\",\"2\",\"\",\"\",\"5\"\n" + |
| "\"6\",\"7\",\"\",\"\",\"10\""; |
| |
| @Test |
| public void testJiraCsv264() { |
| final CSVFormat csvFormat = CSVFormat.DEFAULT |
| .builder() |
| .setHeader() |
| .setDuplicateHeaderMode(DuplicateHeaderMode.DISALLOW) |
| .setAllowMissingColumnNames(true) |
| .build(); |
| |
| try (StringReader reader = new StringReader(CSV_STRING)) { |
| assertThrows(IllegalArgumentException.class, () -> csvFormat.parse(reader)); |
| } |
| } |
| |
| @Test |
| public void testJiraCsv264WithGapAllowEmpty() throws IOException { |
| final CSVFormat csvFormat = CSVFormat.DEFAULT |
| .builder() |
| .setHeader() |
| .setDuplicateHeaderMode(DuplicateHeaderMode.ALLOW_EMPTY) |
| .setAllowMissingColumnNames(true) |
| .build(); |
| |
| try (StringReader reader = new StringReader(CSV_STRING_GAP)) { |
| csvFormat.parse(reader); |
| } |
| } |
| |
| @Test |
| public void testJiraCsv264WithGapDisallow() { |
| final CSVFormat csvFormat = CSVFormat.DEFAULT |
| .builder() |
| .setHeader() |
| .setDuplicateHeaderMode(DuplicateHeaderMode.DISALLOW) |
| .setAllowMissingColumnNames(true) |
| .build(); |
| |
| try (StringReader reader = new StringReader(CSV_STRING_GAP)) { |
| assertThrows(IllegalArgumentException.class, () -> csvFormat.parse(reader)); |
| } |
| } |
| } |