def test_tell():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
assert fp.tell() == 1
read2 = fp.read(2)
assert read2 == b"bc"
assert fp.tell() == 3
read3 = fp.read(3)
assert read3 == b"def"
assert fp.tell() == 6
read4 = fp.read(4)
assert read4 == b""
assert fp.tell() == 6
def test_tell():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
assert fp.tell() == 1
read2 = fp.read(2)
assert read2 == b"bc"
assert fp.tell() == 3
read3 = fp.read(3)
assert read3 == b"def"
assert fp.tell() == 6
read4 = fp.read(4)
assert read4 == b""
assert fp.tell() == 6
def test_seek_tell():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
assert fp.tell() == 1
fp.seek(0)
read2 = fp.read(1)
assert read2 == b"a"
assert fp.tell() == 1
read3 = fp.read(2)
assert read3 == b"bc"
assert fp.tell() == 3
fp.seek(2)
read4 = fp.read(2)
assert read4 == b"cd"
assert fp.tell() == 4
fp.seek(4)
read5 = fp.read(2)
assert read5 == b"ef"
assert fp.tell() == 6
def test_seek_tell():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
assert fp.tell() == 1
fp.seek(0)
read2 = fp.read(1)
assert read2 == b"a"
assert fp.tell() == 1
read3 = fp.read(2)
assert read3 == b"bc"
assert fp.tell() == 3
fp.seek(2)
read4 = fp.read(2)
assert read4 == b"cd"
assert fp.tell() == 4
fp.seek(4)
read5 = fp.read(2)
assert read5 == b"ef"
assert fp.tell() == 6
