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https://github.com/python-pillow/Pillow.git
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7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
186 lines
6.2 KiB
Python
186 lines
6.2 KiB
Python
from __future__ import division, print_function
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import sys
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from .helper import unittest, PillowTestCase
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from PIL import Image
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is_pypy = hasattr(sys, 'pypy_version_info')
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class TestCoreStats(PillowTestCase):
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def test_get_stats(self):
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# Create at least one image
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Image.new('RGB', (10, 10))
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stats = Image.core.get_stats()
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self.assertIn('new_count', stats)
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self.assertIn('reused_blocks', stats)
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self.assertIn('freed_blocks', stats)
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self.assertIn('allocated_blocks', stats)
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self.assertIn('reallocated_blocks', stats)
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self.assertIn('blocks_cached', stats)
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def test_reset_stats(self):
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Image.core.reset_stats()
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stats = Image.core.get_stats()
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self.assertEqual(stats['new_count'], 0)
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self.assertEqual(stats['reused_blocks'], 0)
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self.assertEqual(stats['freed_blocks'], 0)
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self.assertEqual(stats['allocated_blocks'], 0)
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self.assertEqual(stats['reallocated_blocks'], 0)
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self.assertEqual(stats['blocks_cached'], 0)
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class TestCoreMemory(PillowTestCase):
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def tearDown(self):
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# Restore default values
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Image.core.set_alignment(1)
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Image.core.set_block_size(1024*1024)
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Image.core.set_blocks_max(0)
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Image.core.clear_cache()
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def test_get_alignment(self):
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alignment = Image.core.get_alignment()
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self.assertGreater(alignment, 0)
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def test_set_alignment(self):
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for i in [1, 2, 4, 8, 16, 32]:
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Image.core.set_alignment(i)
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alignment = Image.core.get_alignment()
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self.assertEqual(alignment, i)
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# Try to construct new image
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Image.new('RGB', (10, 10))
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self.assertRaises(ValueError, Image.core.set_alignment, 0)
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self.assertRaises(ValueError, Image.core.set_alignment, -1)
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self.assertRaises(ValueError, Image.core.set_alignment, 3)
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def test_get_block_size(self):
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block_size = Image.core.get_block_size()
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self.assertGreaterEqual(block_size, 4096)
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def test_set_block_size(self):
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for i in [4096, 2*4096, 3*4096]:
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Image.core.set_block_size(i)
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block_size = Image.core.get_block_size()
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self.assertEqual(block_size, i)
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# Try to construct new image
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Image.new('RGB', (10, 10))
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self.assertRaises(ValueError, Image.core.set_block_size, 0)
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self.assertRaises(ValueError, Image.core.set_block_size, -1)
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self.assertRaises(ValueError, Image.core.set_block_size, 4000)
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def test_set_block_size_stats(self):
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Image.core.reset_stats()
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Image.core.set_blocks_max(0)
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Image.core.set_block_size(4096)
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Image.new('RGB', (256, 256))
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stats = Image.core.get_stats()
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self.assertGreaterEqual(stats['new_count'], 1)
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self.assertGreaterEqual(stats['allocated_blocks'], 64)
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if not is_pypy:
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self.assertGreaterEqual(stats['freed_blocks'], 64)
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def test_get_blocks_max(self):
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blocks_max = Image.core.get_blocks_max()
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self.assertGreaterEqual(blocks_max, 0)
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def test_set_blocks_max(self):
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for i in [0, 1, 10]:
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Image.core.set_blocks_max(i)
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blocks_max = Image.core.get_blocks_max()
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self.assertEqual(blocks_max, i)
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# Try to construct new image
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Image.new('RGB', (10, 10))
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self.assertRaises(ValueError, Image.core.set_blocks_max, -1)
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@unittest.skipIf(is_pypy, "images are not collected")
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def test_set_blocks_max_stats(self):
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Image.core.reset_stats()
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Image.core.set_blocks_max(128)
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Image.core.set_block_size(4096)
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Image.new('RGB', (256, 256))
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Image.new('RGB', (256, 256))
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stats = Image.core.get_stats()
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self.assertGreaterEqual(stats['new_count'], 2)
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self.assertGreaterEqual(stats['allocated_blocks'], 64)
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self.assertGreaterEqual(stats['reused_blocks'], 64)
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self.assertEqual(stats['freed_blocks'], 0)
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self.assertEqual(stats['blocks_cached'], 64)
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@unittest.skipIf(is_pypy, "images are not collected")
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def test_clear_cache_stats(self):
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Image.core.reset_stats()
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Image.core.clear_cache()
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Image.core.set_blocks_max(128)
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Image.core.set_block_size(4096)
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Image.new('RGB', (256, 256))
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Image.new('RGB', (256, 256))
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# Keep 16 blocks in cache
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Image.core.clear_cache(16)
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stats = Image.core.get_stats()
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self.assertGreaterEqual(stats['new_count'], 2)
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self.assertGreaterEqual(stats['allocated_blocks'], 64)
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self.assertGreaterEqual(stats['reused_blocks'], 64)
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self.assertGreaterEqual(stats['freed_blocks'], 48)
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self.assertEqual(stats['blocks_cached'], 16)
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def test_large_images(self):
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Image.core.reset_stats()
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Image.core.set_blocks_max(0)
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Image.core.set_block_size(4096)
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Image.new('RGB', (2048, 16))
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Image.core.clear_cache()
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stats = Image.core.get_stats()
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self.assertGreaterEqual(stats['new_count'], 1)
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self.assertGreaterEqual(stats['allocated_blocks'], 16)
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self.assertGreaterEqual(stats['reused_blocks'], 0)
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self.assertEqual(stats['blocks_cached'], 0)
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if not is_pypy:
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self.assertGreaterEqual(stats['freed_blocks'], 16)
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class TestEnvVars(PillowTestCase):
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def tearDown(self):
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# Restore default values
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Image.core.set_alignment(1)
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Image.core.set_block_size(1024*1024)
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Image.core.set_blocks_max(0)
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Image.core.clear_cache()
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def test_units(self):
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Image._apply_env_variables({'PILLOW_BLOCKS_MAX': '2K'})
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self.assertEqual(Image.core.get_blocks_max(), 2*1024)
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Image._apply_env_variables({'PILLOW_BLOCK_SIZE': '2m'})
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self.assertEqual(Image.core.get_block_size(), 2*1024*1024)
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def test_warnings(self):
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self.assert_warning(
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UserWarning, Image._apply_env_variables,
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{'PILLOW_ALIGNMENT': '15'})
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self.assert_warning(
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UserWarning, Image._apply_env_variables,
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{'PILLOW_BLOCK_SIZE': '1024'})
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self.assert_warning(
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UserWarning, Image._apply_env_variables,
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{'PILLOW_BLOCKS_MAX': 'wat'})
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if __name__ == '__main__':
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unittest.main()
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