src/test/java/org/apache/commons/csv/issues/JiraCsv203Test.java

/*
 * 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
 *
 *   https://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.assertEquals;

import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVPrinter;
import org.apache.commons.csv.QuoteMode;
import org.junit.jupiter.api.Test;

/**
 * JIRA: <a href="https://issues.apache.org/jira/browse/CSV-203">withNullString value is printed without quotes when
 * QuoteMode.ALL is specified</a>
 */
class JiraCsv203Test {

    @Test
    void testQuoteModeAll() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                .setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .setQuoteMode(QuoteMode.ALL)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord(null, "Hello", null, "World");
        }
        assertEquals("\"N/A\",\"Hello\",\"N/A\",\"World\"\r\n", buffer.toString());
    }

    @Test
    void testQuoteModeAllNonNull() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                .setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .setQuoteMode(QuoteMode.ALL_NON_NULL)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord(null, "Hello", null, "World");
        }
        assertEquals("N/A,\"Hello\",N/A,\"World\"\r\n", buffer.toString());
    }

    @Test
    void testQuoteModeMinimal() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                .setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .setQuoteMode(QuoteMode.MINIMAL)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord(null, "Hello", null, "World");
        }
        assertEquals("N/A,Hello,N/A,World\r\n", buffer.toString());
    }

    @Test
    void testQuoteModeNonNumeric() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                .setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .setQuoteMode(QuoteMode.NON_NUMERIC)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord(null, "Hello", null, "World");
        }
        assertEquals("N/A,\"Hello\",N/A,\"World\"\r\n", buffer.toString());
    }

    @Test
    void testWithEmptyValues() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                .setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .setQuoteMode(QuoteMode.ALL)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord("", "Hello", "", "World");
            // printer.printRecord(new Object[] { null, "Hello", null, "World" });
        }
        assertEquals("\"\",\"Hello\",\"\",\"World\"\r\n", buffer.toString());
    }

    @Test
    void testWithoutNullString() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                //.setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .setQuoteMode(QuoteMode.ALL)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord(null, "Hello", null, "World");
        }
        assertEquals(",\"Hello\",,\"World\"\r\n", buffer.toString());
    }

    @Test
    void testWithoutQuoteMode() throws Exception {
        // @formatter:off
        final CSVFormat format = CSVFormat.EXCEL.builder()
                .setNullString("N/A")
                .setIgnoreSurroundingSpaces(true)
                .get();
        // @formatter:on
        final StringBuilder buffer = new StringBuilder();
        try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
            printer.printRecord(null, "Hello", null, "World");
        }
        assertEquals("N/A,Hello,N/A,World\r\n", buffer.toString());
    }
}