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package org.apache.james.imap.api;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import static org.junit.Assert.*;
import org.apache.james.imap.api.message.IdRange;
import org.junit.Test;
public class IdRangeTest {
@Test
public void testNotMerge() {
IdRange r = new IdRange(0, 2);
IdRange r2 = new IdRange(4, 5);
IdRange r3 = new IdRange(7, 10);
List<IdRange> ranges = new ArrayList<IdRange>();
ranges.add(r);
ranges.add(r2);
ranges.add(r3);
List<IdRange> merged = IdRange.mergeRanges(ranges);
assertEquals(3, merged.size());
Iterator<IdRange> rIt = merged.iterator();
checkIdRange(r,rIt.next());
checkIdRange(r2,rIt.next());
checkIdRange(r3,rIt.next());
assertFalse(rIt.hasNext());
}
@Test
public void testMerge() {
IdRange r = new IdRange(0, 2);
IdRange r2 = new IdRange(1, 4);
IdRange r3 = new IdRange(6, 7);
List<IdRange> ranges = new ArrayList<IdRange>();
ranges.add(r);
ranges.add(r2);
ranges.add(r3);
List<IdRange> merged = IdRange.mergeRanges(ranges);
assertEquals(2, merged.size());
Iterator<IdRange> rIt = merged.iterator();
checkIdRange(new IdRange(0, 4),rIt.next());
checkIdRange(r3,rIt.next());
assertFalse(rIt.hasNext());
}
@Test
public void testMerge2() {
IdRange r = new IdRange(0, 10);
IdRange r2 = new IdRange(1, 4);
IdRange r3 = new IdRange(5, 7);
List<IdRange> ranges = new ArrayList<IdRange>();
ranges.add(r);
ranges.add(r2);
ranges.add(r3);
List<IdRange> merged = IdRange.mergeRanges(ranges);
assertEquals(1, merged.size());
Iterator<IdRange> rIt = merged.iterator();
checkIdRange(new IdRange(0, 10),rIt.next());
assertFalse(rIt.hasNext());
}
@Test
public void testMerge3() {
IdRange r = new IdRange(0, 10);
IdRange r2 = new IdRange(1, 4);
IdRange r3 = new IdRange(10, 15);
List<IdRange> ranges = new ArrayList<IdRange>();
ranges.add(r);
ranges.add(r2);
ranges.add(r3);
List<IdRange> merged = IdRange.mergeRanges(ranges);
assertEquals(1, merged.size());
Iterator<IdRange> rIt = merged.iterator();
checkIdRange(new IdRange(0, 15),rIt.next());
assertFalse(rIt.hasNext());
}
@Test
public void testMerge4() {
IdRange r = new IdRange(0, 1);
IdRange r2 = new IdRange(1, 1);
IdRange r3 = new IdRange(2, 2);
List<IdRange> ranges = new ArrayList<IdRange>();
ranges.add(r);
ranges.add(r2);
ranges.add(r3);
List<IdRange> merged = IdRange.mergeRanges(ranges);
assertEquals(1, merged.size());
Iterator<IdRange> rIt = merged.iterator();
checkIdRange(new IdRange(0, 2),rIt.next());
assertFalse(rIt.hasNext());
}
private void checkIdRange(IdRange r1, IdRange r2) {
assertEquals(r1.getLowVal(), r2.getLowVal());
assertEquals(r1.getHighVal(), r2.getHighVal());
}
}