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from __future__ import annotations
import pytest
from PIL import ContainerIO, Image
TEST_FILE = "Tests/images/dummy.container"
def test_sanity() -> None:
dir(Image)
dir(ContainerIO)
def test_isatty() -> None:
with open(TEST_FILE, "rb") as fh:
container = ContainerIO.ContainerIO(fh, 0, 0)
assert container.isatty() is False
def test_seekable() -> None:
with open(TEST_FILE, "rb") as fh:
container = ContainerIO.ContainerIO(fh, 0, 0)
assert container.seekable() is True
@pytest.mark.parametrize(
"mode, expected_position",
(
(0, 33),
(1, 66),
(2, 100),
),
)
def test_seek_mode(mode: int, expected_position: int) -> None:
# Arrange
with open(TEST_FILE, "rb") as fh:
container = ContainerIO.ContainerIO(fh, 22, 100)
# Act
container.seek(33, mode)
container.seek(33, mode)
# Assert
assert container.tell() == expected_position
@pytest.mark.parametrize("bytesmode", (True, False))
def test_readable(bytesmode: bool) -> None:
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 0, 120)
assert container.readable() is True
@pytest.mark.parametrize("bytesmode", (True, False))
def test_read_n0(bytesmode: bool) -> None:
# Arrange
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 22, 100)
# Act
assert container.seek(81) == 81
data = container.read()
# Assert
if bytesmode:
data = data.decode()
assert data == "7\nThis is line 8\n"
@pytest.mark.parametrize("bytesmode", (True, False))
def test_read_n(bytesmode: bool) -> None:
# Arrange
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 22, 100)
# Act
assert container.seek(81) == 81
data = container.read(3)
# Assert
if bytesmode:
data = data.decode()
assert data == "7\nT"
@pytest.mark.parametrize("bytesmode", (True, False))
def test_read_eof(bytesmode: bool) -> None:
# Arrange
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 22, 100)
# Act
assert container.seek(100) == 100
data = container.read()
# Assert
if bytesmode:
data = data.decode()
assert data == ""
@pytest.mark.parametrize("bytesmode", (True, False))
def test_readline(bytesmode: bool) -> None:
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 0, 120)
data = container.readline()
if bytesmode:
data = data.decode()
assert data == "This is line 1\n"
data = container.readline(4)
if bytesmode:
data = data.decode()
assert data == "This"
@pytest.mark.parametrize("bytesmode", (True, False))
def test_readlines(bytesmode: bool) -> None:
expected = [
"This is line 1\n",
"This is line 2\n",
"This is line 3\n",
"This is line 4\n",
"This is line 5\n",
"This is line 6\n",
"This is line 7\n",
"This is line 8\n",
]
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 0, 120)
data = container.readlines()
if bytesmode:
data = [line.decode() for line in data]
assert data == expected
assert container.seek(0) == 0
data = container.readlines(2)
if bytesmode:
data = [line.decode() for line in data]
assert data == expected[:2]
@pytest.mark.parametrize("bytesmode", (True, False))
def test_write(bytesmode: bool) -> None:
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 0, 120)
assert container.writable() is False
with pytest.raises(NotImplementedError):
container.write(b"" if bytesmode else "")
with pytest.raises(NotImplementedError):
container.writelines([])
with pytest.raises(NotImplementedError):
container.truncate()
@pytest.mark.parametrize("bytesmode", (True, False))
def test_iter(bytesmode: bool) -> None:
# Arrange
expected = [
"This is line 1\n",
"This is line 2\n",
"This is line 3\n",
"This is line 4\n",
"This is line 5\n",
"This is line 6\n",
"This is line 7\n",
"This is line 8\n",
]
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 0, 120)
# Act
data = []
for line in container:
data.append(line)
# Assert
if bytesmode:
data = [line.decode() for line in data]
assert data == expected
@pytest.mark.parametrize("bytesmode", (True, False))
def test_file(bytesmode: bool) -> None:
with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
container = ContainerIO.ContainerIO(fh, 0, 120)
assert isinstance(container.fileno(), int)
container.flush()
container.close()
|
