@Test
public void testReadBoolean() throws IOException {
LittleEndianDataInputStream data =
new LittleEndianDataInputStream(
new ByteArrayInputStream(new byte[] {0, 1, 0x7f, (byte) 0xff}));
assertFalse(data.readBoolean());
assertTrue(data.readBoolean());
assertTrue(data.readBoolean());
assertTrue(data.readBoolean());
}
@Test
public void testReadByte() throws IOException {
LittleEndianDataInputStream data =
new LittleEndianDataInputStream(
new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x01,
}));
assertEquals(0, data.readByte());
assertEquals(0, data.readByte());
assertEquals(1, data.readByte());
assertEquals(0, data.readByte());
assertEquals(-1, data.readByte());
assertEquals(-1, data.readByte());
assertEquals(0, data.readByte());
assertEquals(Byte.MIN_VALUE, data.readByte());
assertEquals(-1, data.readByte());
assertEquals(Byte.MAX_VALUE, data.readByte());
assertEquals(0, data.readByte());
assertEquals(1, data.readByte());
}
@Test
public void testReadInt() throws IOException {
LittleEndianDataInputStream data =
new LittleEndianDataInputStream(
new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
(byte) 0xff, (byte) 0x00, (byte) 0xff, (byte) 0x00,
(byte) 0x00, (byte) 0xff, (byte) 0x00, (byte) 0xff,
(byte) 0xbe, (byte) 0xba, (byte) 0xfe, (byte) 0xca,
(byte) 0xca, (byte) 0xfe, (byte) 0xd0, (byte) 0x0d,
}));
assertEquals(0, data.readInt());
assertEquals(1, data.readInt());
assertEquals(-1, data.readInt());
assertEquals(Integer.MIN_VALUE, data.readInt());
assertEquals(Integer.MAX_VALUE, data.readInt());
assertEquals(16777216, data.readInt());
assertEquals(0xff00ff, data.readInt());
assertEquals(0xff00ff00, data.readInt());
assertEquals(0xCafeBabe, data.readInt());
assertEquals(0x0dd0feca, data.readInt());
}
@Test
public void testReadLong() throws IOException {
LittleEndianDataInputStream data =
new LittleEndianDataInputStream(
new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x00,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x01,
(byte) 0x0d, (byte) 0xd0, (byte) 0xfe, (byte) 0xca, (byte) 0xbe, (byte) 0xba,
(byte) 0xfe, (byte) 0xca,
}));
assertEquals(0, data.readLong());
assertEquals(1, data.readLong());
assertEquals(-1, data.readLong());
assertEquals(Long.MIN_VALUE, data.readLong());
assertEquals(Long.MAX_VALUE, data.readLong());
assertEquals(72057594037927936L, data.readLong());
assertEquals(0xCafeBabeL << 32 | 0xCafeD00dL, data.readLong());
}
@Test
public void testReadUnsignedShort() throws IOException {
LittleEndianDataInputStream data =
new LittleEndianDataInputStream(
new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x01,
}));
assertEquals(0, data.readUnsignedShort());
assertEquals(1, data.readUnsignedShort());
assertEquals(Short.MAX_VALUE * 2 + 1, data.readUnsignedShort());
assertEquals(Short.MAX_VALUE + 1, data.readUnsignedShort());
assertEquals(Short.MAX_VALUE, data.readUnsignedShort());
assertEquals(256, data.readUnsignedShort());
}
