@Test(dataProvider = "blanksProvider")
public void testWriteBlanks(boolean quoteAllFields, String nullValue, String expectedResult) {
CsvWriterSettings s = new CsvWriterSettings();
s.setQuoteAllFields(quoteAllFields);
s.getFormat().setLineSeparator("\n");
s.setNullValue(nullValue);
s.setEmptyValue("//");
CsvWriter w = new CsvWriter(s);
CsvParserSettings ps = new CsvParserSettings();
ps.setNullValue(nullValue);
ps.setEmptyValue("//");
CsvParser p = new CsvParser(ps);
String result = w.writeRowToString(" ", " ", "", "\"\"", null);
assertEquals(result, expectedResult);
String[] row = p.parseLine(result);
if (quoteAllFields) {
assertEquals(row[0], "//");
assertEquals(row[1], "//");
} else {
assertEquals(row[0], nullValue);
assertEquals(row[1], nullValue);
}
assertEquals(row[2], "//");
assertEquals(row[3], "\"\"");
assertEquals(row[4], nullValue);
}
@Test(enabled = true, dataProvider = "lineSeparatorProvider")
public void writeTest(boolean quoteAllFields, char[] lineSeparator) throws Exception {
CsvWriterSettings settings = new CsvWriterSettings();
String[] expectedHeaders = new String[] {"Year", "Make", "Model", "Description", "Price"};
settings.setQuoteAllFields(quoteAllFields);
settings.getFormat().setLineSeparator(lineSeparator);
settings.setIgnoreLeadingWhitespaces(false);
settings.setIgnoreTrailingWhitespaces(false);
settings.setHeaders(expectedHeaders);
ByteArrayOutputStream csvResult = new ByteArrayOutputStream();
CsvWriter writer = new CsvWriter(new OutputStreamWriter(csvResult, "UTF-8"), settings);
Object[][] expectedResult =
new Object[][] {
{"1997", "Ford", "E350", "ac, abs, moon", "3000.00"},
{"1999", "Chevy", "Venture \"Extended Edition\"", null, "4900.00"},
{"1996", "Jeep", "Grand Cherokee", "MUST SELL!\nair, moon roof, loaded", "4799.00"},
{"1999", "Chevy", "Venture \"Extended Edition, Very Large\"", null, "5000.00"},
{null, null, "Venture \"Extended Edition\"", null, "4900.00"},
{null, null, null, null, null},
{null, null, null, null, null},
{null, null, "5", null, null},
{"1997", "Ford", "E350", "ac, abs, moon", "3000.00"},
{"1997", "Ford", "E350", " ac, abs, moon ", "3000.00"},
{"1997", "Ford", "E350", " ac, abs, moon ", "3000.00"},
{"19 97", "Fo rd", "E350", " ac, abs, moon ", "3000.00"},
{null, " ", null, " ", "30 00.00"},
{"1997", "Ford", "E350", " \" ac, abs, moon \" ", "3000.00"},
{"1997", "Ford", "E350", "\" ac, abs, moon \" ", "3000.00"},
};
writer.writeHeaders();
for (int i = 0; i < 4; i++) {
writer.writeRow(expectedResult[i]);
}
writer.writeRow("-->skipping this line (10) as well");
for (int i = 4; i < expectedResult.length; i++) {
writer.writeRow(expectedResult[i]);
}
writer.close();
String result = csvResult.toString();
result =
"This line and the following should be skipped. The third is ignored automatically because it is blank\n\n\n"
.replaceAll("\n", new String(lineSeparator))
+ result;
CsvParserSettings parserSettings = new CsvParserSettings();
parserSettings.setRowProcessor(processor);
parserSettings.getFormat().setLineSeparator(lineSeparator);
parserSettings.setHeaderExtractionEnabled(true);
parserSettings.setIgnoreLeadingWhitespaces(false);
parserSettings.setIgnoreTrailingWhitespaces(false);
CsvParser parser = new CsvParser(parserSettings);
parser.parse(new StringReader(result));
try {
assertHeadersAndValuesMatch(expectedHeaders, expectedResult);
} catch (Error e) {
System.out.println("FAILED:\n===\n" + result + "\n===");
throw e;
}
}
@Test(enabled = true, dataProvider = "lineSeparatorProvider")
public void writeSelectedColumnOnly(boolean quoteAllFields, char[] lineSeparator)
throws Exception {
CsvWriterSettings settings = new CsvWriterSettings();
String[] expectedHeaders = new String[] {"Year", "Make", "Model", "Description", "Price"};
settings.setQuoteAllFields(quoteAllFields);
settings.getFormat().setLineSeparator(lineSeparator);
settings.setIgnoreLeadingWhitespaces(false);
settings.setIgnoreTrailingWhitespaces(false);
settings.setHeaders(expectedHeaders);
settings.selectFields("Model", "Price");
ByteArrayOutputStream csvResult = new ByteArrayOutputStream();
CsvWriter writer = new CsvWriter(new OutputStreamWriter(csvResult, "UTF-8"), settings);
Object[][] input =
new Object[][] {
{"E350", "3000.00"},
{"Venture \"Extended Edition\"", "4900.00"},
{"Grand Cherokee", "4799.00"},
{"Venture \"Extended Edition, Very Large\"", "5000.00"},
{"Venture \"Extended Edition\"", "4900.00"},
{null, null},
{"5", null},
{"E350", "3000.00"},
};
writer.writeHeaders();
writer.writeRowsAndClose(input);
Object[][] expectedResult =
new Object[][] {
{null, null, "E350", null, "3000.00"},
{null, null, "Venture \"Extended Edition\"", null, "4900.00"},
{null, null, "Grand Cherokee", null, "4799.00"},
{null, null, "Venture \"Extended Edition, Very Large\"", null, "5000.00"},
{null, null, "Venture \"Extended Edition\"", null, "4900.00"},
{null, null, null, null, null},
{null, null, "5", null, null},
{null, null, "E350", null, "3000.00"},
};
String result = csvResult.toString();
RowListProcessor rowList = new RowListProcessor();
CsvParserSettings parserSettings = new CsvParserSettings();
parserSettings.setRowProcessor(rowList);
parserSettings.getFormat().setLineSeparator(lineSeparator);
parserSettings.setHeaderExtractionEnabled(true);
parserSettings.setIgnoreLeadingWhitespaces(false);
parserSettings.setIgnoreTrailingWhitespaces(false);
CsvParser parser = new CsvParser(parserSettings);
parser.parse(new StringReader(result));
try {
assertHeadersAndValuesMatch(rowList, expectedHeaders, expectedResult);
} catch (Error e) {
System.out.println("FAILED:\n===\n" + result + "\n===");
throw e;
}
}