//
// Verify that, after replacing a hole and the highest-offset extent in a
// two entry map with one that leaves a byte of the replaced extent
// protruding:
// - The resulting map has the correct number of entries.
// - The protrusion from the high end of the map properly appears in
// the resulting map.
//
// This test recreates the circumstances of a bug observed while testing
// the BufferCache class.
//
@Test
public final void testReplaceExtentsR0() {
ByteBuffer b00_01 = ByteBuffer.wrap("0".getBytes());
ByteBuffer b02_04 = ByteBuffer.wrap("23".getBytes());
ExtentBuffer eb00_01 = new ExtentBuffer(0L, b00_01);
ExtentBuffer eb02_04 = new ExtentBuffer(2L, b02_04);
ExtentBufferMap m00_04 = new ExtentBufferMap();
m00_04.put(eb00_01);
m00_04.put(eb02_04);
ByteBuffer b01_03 = ByteBuffer.wrap("ab".getBytes());
ExtentBuffer eb01_03 = new ExtentBuffer(1L, b01_03);
m00_04.replaceExtents(eb01_03);
assertEquals("resulting map should have 3 extents", m00_04.size(), 3);
assertEquals(
"the extent starting at offset 1 in the result "
+ " should be the one given as the replacement",
m00_04.get(1L),
eb01_03);
//
// XXX: Verify tail's contents as well as its bounds?
//
Extent tail = m00_04.get(m00_04.lastKey());
assertTrue(
"resulting map should have an extent for protrusion",
tail.getStartOffset() == 3L && tail.getEndOffset() == 4L);
}
//
// Verify that, after replacing the highest-offset extent in a two entry
// map with one that fits entirely within the replacee's interior:
// - The resulting map has the correct number of extents.
// - The replacement extent appears within the resulting map.
//
// XXX: There are more things that can and should be checked here.
//
@Test
public final void testReplaceExtentsLR0() {
ByteBuffer b00_01 = ByteBuffer.wrap("0".getBytes());
ByteBuffer b01_09 = ByteBuffer.wrap("12345678".getBytes());
ExtentBuffer eb00_01 = new ExtentBuffer(0L, b00_01);
ExtentBuffer eb01_09 = new ExtentBuffer(1L, b01_09);
ExtentBufferMap m00_09 = new ExtentBufferMap();
m00_09.put(eb00_01);
m00_09.put(eb01_09);
ByteBuffer b05_08 = ByteBuffer.wrap("XYZ".getBytes());
ExtentBuffer eb05_08 = new ExtentBuffer(5L, b05_08);
m00_09.replaceExtents(eb05_08);
assertEquals("resulting map should have 4 extents", m00_09.size(), 4);
assertEquals(
"the extent starting at offset 5 in the result "
+ " should be the one given as the replacement",
m00_09.get(5L),
eb05_08);
}