@Test
public void testPackLong_WithStreams() throws IOException {
for (long valueToPack = 0;
valueToPack < Long.MAX_VALUE && valueToPack >= 0;
valueToPack = random.nextInt(2) + valueToPack * 2) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
DataIO.packLong(outputStream, valueToPack);
DataIO.packLong(outputStream, -valueToPack);
ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
long unpackedLong = DataIO.unpackLong(inputStream);
assertEquals("Packed and unpacked values do not match", valueToPack, unpackedLong);
unpackedLong = DataIO.unpackLong(inputStream);
assertEquals("Packed and unpacked values do not match", -valueToPack, unpackedLong);
}
}
@Test(expected = EOFException.class)
public void testUnpackLong_withInputStream_throws_exception_when_stream_is_empty()
throws IOException {
DataIO.unpackLong(new ByteArrayInputStream(new byte[0]));
fail(
"An EOFException should have occurred by now since there are no bytes to read from the InputStream");
}
@Test
public void packLong() throws IOException {
DataInputByteArray in = new DataInputByteArray(new byte[20]);
DataOutputByteArray out = new DataOutputByteArray();
out.buf = in.buf;
for (long i = 0; i > 0; i = i + 1 + i / 10000) {
in.pos = 10;
out.pos = 10;
DataIO.packLong((DataOutput) out, i);
long i2 = DataIO.unpackLong(in);
assertEquals(i, i2);
assertEquals(in.pos, out.pos);
}
}
