Pillow/Tests/test_file_msp.py
2020-02-23 00:06:21 +11:00

84 lines
2.4 KiB
Python

import os
import unittest
import pytest
from PIL import Image, MspImagePlugin
from .helper import PillowTestCase, assert_image_equal, hopper
TEST_FILE = "Tests/images/hopper.msp"
EXTRA_DIR = "Tests/images/picins"
YA_EXTRA_DIR = "Tests/images/msp"
class TestFileMsp(PillowTestCase):
def test_sanity(self):
test_file = self.tempfile("temp.msp")
hopper("1").save(test_file)
with Image.open(test_file) as im:
im.load()
assert im.mode == "1"
assert im.size == (128, 128)
assert im.format == "MSP"
def test_invalid_file(self):
invalid_file = "Tests/images/flower.jpg"
with pytest.raises(SyntaxError):
MspImagePlugin.MspImageFile(invalid_file)
def test_bad_checksum(self):
# Arrange
# This was created by forcing Pillow to save with checksum=0
bad_checksum = "Tests/images/hopper_bad_checksum.msp"
# Act / Assert
with pytest.raises(SyntaxError):
MspImagePlugin.MspImageFile(bad_checksum)
def test_open_windows_v1(self):
# Arrange
# Act
with Image.open(TEST_FILE) as im:
# Assert
assert_image_equal(im, hopper("1"))
assert isinstance(im, MspImagePlugin.MspImageFile)
def _assert_file_image_equal(self, source_path, target_path):
with Image.open(source_path) as im:
with Image.open(target_path) as target:
assert_image_equal(im, target)
@unittest.skipUnless(os.path.exists(EXTRA_DIR), "Extra image files not installed")
def test_open_windows_v2(self):
files = (
os.path.join(EXTRA_DIR, f)
for f in os.listdir(EXTRA_DIR)
if os.path.splitext(f)[1] == ".msp"
)
for path in files:
self._assert_file_image_equal(path, path.replace(".msp", ".png"))
@unittest.skipIf(
not os.path.exists(YA_EXTRA_DIR), "Even More Extra image files not installed"
)
def test_msp_v2(self):
for f in os.listdir(YA_EXTRA_DIR):
if ".MSP" not in f:
continue
path = os.path.join(YA_EXTRA_DIR, f)
self._assert_file_image_equal(path, path.replace(".MSP", ".png"))
def test_cannot_save_wrong_mode(self):
# Arrange
im = hopper()
filename = self.tempfile("temp.msp")
# Act/Assert
with pytest.raises(IOError):
im.save(filename)