mirror of
https://github.com/python-pillow/Pillow.git
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4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
182 lines
6.2 KiB
Python
182 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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