public virtual void test_nextBatch2()
{
using (CsvIterator csvFile = CsvIterator.of(CharSource.wrap(CSV1), true))
{
ImmutableList <string> headers = csvFile.headers();
assertEquals(headers.size(), 2);
assertEquals(headers.get(0), "h1");
assertEquals(headers.get(1), "h2");
IList <CsvRow> a = csvFile.nextBatch(3);
assertEquals(a.Count, 2);
CsvRow row0 = a[0];
assertEquals(row0.headers(), headers);
assertEquals(row0.fieldCount(), 2);
assertEquals(row0.field(0), "r11");
assertEquals(row0.field(1), "r12");
CsvRow row1 = a[1];
assertEquals(row1.headers(), headers);
assertEquals(row1.fieldCount(), 2);
assertEquals(row1.field(0), "r21");
assertEquals(row1.field(1), "r22");
IList <CsvRow> d = csvFile.nextBatch(2);
assertEquals(d.Count, 0);
assertEquals(csvFile.hasNext(), false);
assertEquals(csvFile.hasNext(), false);
}
}
//-------------------------------------------------------------------------
public virtual void nextBatch_predicate()
{
using (CsvIterator csvFile = CsvIterator.of(CharSource.wrap(CSV5GROUPED), true))
{
ImmutableList <string> headers = csvFile.headers();
assertEquals(headers.size(), 2);
assertEquals(headers.get(0), "id");
assertEquals(headers.get(1), "value");
int batches = 0;
int total = 0;
while (csvFile.hasNext())
{
CsvRow first = csvFile.peek();
string id = first.getValue("id");
IList <CsvRow> batch = csvFile.nextBatch(row => row.getValue("id").Equals(id));
assertEquals(batch.Select(row => row.getValue("id")).Distinct().Count(), 1);
batches++;
total += batch.Count;
}
assertEquals(batches, 3);
assertEquals(total, 6);
}
}