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SkipEmptyLines191Test.java
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SkipEmptyLines191Test.java
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package com.fasterxml.jackson.dataformat.csv.deser;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.List;
import java.util.Map;
import java.util.Random;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import com.fasterxml.jackson.databind.MappingIterator;
import com.fasterxml.jackson.databind.ObjectReader;
import com.fasterxml.jackson.dataformat.csv.CsvMapper;
import com.fasterxml.jackson.dataformat.csv.CsvParser;
import com.fasterxml.jackson.dataformat.csv.CsvSchema;
import com.fasterxml.jackson.dataformat.csv.ModuleTestBase;
// [dataformats-text#191]
// [dataformats-text#174]
public class SkipEmptyLines191Test extends ModuleTestBase {
// [dataformats-text#174]
@JsonPropertyOrder({ "timestamp", "random" })
static class Row174 {
private int timestamp;
private String random;
public int getTimestamp() {
return timestamp;
}
public void setTimestamp(int timestamp) {
this.timestamp = timestamp;
}
public String getRandom() {
return random;
}
public void setRandom(String random) {
this.random = random;
}
@Override
public String toString() {
return "Row{timestamp=" + timestamp + ", random='" + random + "'}";
}
}
/*
/**********************************************************************
/* Test methods
/**********************************************************************
*/
private final static CsvMapper MAPPER = new CsvMapper();
// [dataformats-text#174]
public void testEmptyLines174() throws Exception
{
final StringWriter sw = new StringWriter(50000);
int lineCount = 0;
final Random rnd = new Random();
while (lineCount < 4000) {
sw.append("\"" + System.currentTimeMillis()/1000 + "\",\"" + randomString(rnd) + "\"\n");
++lineCount;
}
final String doc = sw.toString();
ObjectReader objectReader = MAPPER
.enable(CsvParser.Feature.SKIP_EMPTY_LINES)
.readerFor(Row174.class)
.with(MAPPER.schemaFor(Row174.class));
MappingIterator<Row174> iterator = objectReader.readValues(doc);
Row174 data = null;
lineCount = 0;
while (iterator.hasNext()) {
++lineCount;
try {
data = iterator.next();
} catch (Exception e) {
fail("Failed on row #"+lineCount+", previous row: "+data);
}
}
iterator.close();
}
private String randomString(Random rnd) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 10; ++i) {
sb.append((char) ('A' + (rnd.nextInt() & 0xF)));
}
return sb.toString();
}
// [dataformats-text#191]: IndexArrayOutOfBounds at 4000
public void testBigCsvFile() throws Exception
{
final String COL_1 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
final String COL_2 = "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
CsvSchema schema = CsvSchema
.emptySchema()
.withHeader()
.withColumnSeparator(';')
.withNullValue("null")
.withComments();
try (Reader r = new StringReader(_generate4kDoc())) {
List<Map<String, String>> result = MAPPER
.readerFor(Map.class)
.with(schema)
.<Map<String, String>>readValues(r)
.readAll();
for (Map<String, String> row : result) {
assertEquals(row.get("COL_1"), COL_1);
assertEquals(row.get("COL_2"), COL_2);
}
}
}
private String _generate4kDoc() {
StringBuilder sb = new StringBuilder(5000)
.append("COL_1;COL_2\n")
.append("# csv file with a newline at char 4000 (the buffer size) to verify a bug\n")
.append("# LF has to be used for newlines to work\n")
.append("# alignment chars to have the newline as the 4000s char: ----------------\n");
for (int i = 0; i < 40; ++i) {
sb.append("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n");
}
return sb.toString();
}
}