@isTest
private class SSSCsvReaderTest {
static testmethod void testSplitCsvSimple(){
String line = 'abc,efg';
String[] splitted = new SSSCsvReader(line).readLine();
System.assertEquals(2, splitted.size());

System.assertEquals('efg', splitted[1]);
System.assertEquals('abc', splitted[0]);
}

static testmethod void testSplitCsvEOL(){
String line = 'abc,';
String[] splitted = new SSSCsvReader(line).readLine();
System.assertEquals(2, splitted.size());

System.assertEquals('', splitted[1]);
System.assertEquals('abc', splitted[0]);
}

static testmethod void testSplitCsvQuotedSimple(){
String line = '"abc,def"';
String[] splitted = new SSSCsvReader(line).readLine();
System.assertEquals('abc,def', splitted[0]);
}

static testmethod void testSplitCsvQuoted(){
String line = '"abc,def",gh"i,"jk""l",""';
String[] splitted = new SSSCsvReader(line).readLine();
System.assertEquals(4, splitted.size());

System.assertEquals('gh"i', splitted[1]);
System.assertEquals('abc,def', splitted[0]);
System.assertEquals('jk"l', splitted[2]);
System.assertEquals('', splitted[3]);
}

static testmethod void testSplitCsvQuotedWithNewLine(){
String line = '"abc,def\nBoo\nBoo",Test';
SSSCsvReader reader = new SSSCsvReader(line);
String[] splitted = reader.readLine();
System.assertEquals('abc,def\nBoo\nBoo', splitted[0]);
System.assertEquals('Test', splitted[1]);
System.assertEquals(null, reader.readLine());
}

static testmethod void testSplitCsvQuotedWithEOT(){
String line = '"abc,def\nBoo';
SSSCsvReader reader = new SSSCsvReader(line);
String[] splitted = reader.readLine();
System.assertEquals('abc,def\nBoo', splitted[0]);
System.assertEquals(null, reader.readLine());
}

static testmethod void testTabDelim(){
String line = 'abc\tdef';
SSSCsvReader reader = new SSSCsvReader(line, '\t');
String[] splitted = reader.readLine();
System.assertEquals('abc', splitted[0]);
}

static testmethod void testEmptyStrings(){
String line = ',,,,';
SSSCsvReader reader = new SSSCsvReader(line);
String[] splitted = reader.readLine();
System.assertEquals(5, splitted.size());
for(String s: splitted){
System.assertEquals('', s);
}
}

// make sure we still get a result even if the source is empty...
static testmethod void testEmptyString(){
String line = '';
SSSCsvReader reader = new SSSCsvReader(line);
String[] splitted = reader.readLine();
System.assertEquals(1, splitted.size());
System.assertEquals('', splitted[0]);
}
}