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from __future__ import division, print_function | ||
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import sys | ||
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from helper import unittest, PillowTestCase | ||
from PIL import Image | ||
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is_pypy = hasattr(sys, 'pypy_version_info') | ||
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class TestCoreStats(PillowTestCase): | ||
def test_get_stats(self): | ||
# Create at least one image | ||
Image.new('RGB', (10, 10)) | ||
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stats = Image.core.get_stats() | ||
self.assertIn('new_count', stats) | ||
self.assertIn('reused_blocks', stats) | ||
self.assertIn('freed_blocks', stats) | ||
self.assertIn('allocated_blocks', stats) | ||
self.assertIn('reallocated_blocks', stats) | ||
self.assertIn('blocks_cached', stats) | ||
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def test_reset_stats(self): | ||
Image.core.reset_stats() | ||
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stats = Image.core.get_stats() | ||
self.assertEqual(stats['new_count'], 0) | ||
self.assertEqual(stats['reused_blocks'], 0) | ||
self.assertEqual(stats['freed_blocks'], 0) | ||
self.assertEqual(stats['allocated_blocks'], 0) | ||
self.assertEqual(stats['reallocated_blocks'], 0) | ||
self.assertEqual(stats['blocks_cached'], 0) | ||
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class TestCoreMemory(PillowTestCase): | ||
def tearDown(self): | ||
# Restore default values | ||
Image.core.set_alignment(1) | ||
Image.core.set_block_size(1024*1024) | ||
Image.core.set_blocks_max(0) | ||
Image.core.clear_cache() | ||
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def test_get_alignment(self): | ||
alignment = Image.core.get_alignment() | ||
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self.assertGreater(alignment, 0) | ||
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def test_set_alignment(self): | ||
for i in [1, 2, 4, 8, 16, 32]: | ||
Image.core.set_alignment(i) | ||
alignment = Image.core.get_alignment() | ||
self.assertEqual(alignment, i) | ||
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# Try to construct new image | ||
Image.new('RGB', (10, 10)) | ||
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self.assertRaises(ValueError, Image.core.set_alignment, 0) | ||
self.assertRaises(ValueError, Image.core.set_alignment, -1) | ||
self.assertRaises(ValueError, Image.core.set_alignment, 3) | ||
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def test_get_block_size(self): | ||
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): | ||
for i in [4096, 2*4096, 3*4096]: | ||
Image.core.set_block_size(i) | ||
block_size = Image.core.get_block_size() | ||
self.assertEqual(block_size, i) | ||
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# Try to construct new image | ||
Image.new('RGB', (10, 10)) | ||
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self.assertRaises(ValueError, Image.core.set_block_size, 0) | ||
self.assertRaises(ValueError, Image.core.set_block_size, -1) | ||
self.assertRaises(ValueError, Image.core.set_block_size, 4000) | ||
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def test_set_block_size_stats(self): | ||
Image.core.reset_stats() | ||
Image.core.set_blocks_max(0) | ||
Image.core.set_block_size(4096) | ||
Image.new('RGB', (256, 256)) | ||
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stats = Image.core.get_stats() | ||
self.assertGreaterEqual(stats['new_count'], 1) | ||
self.assertGreaterEqual(stats['allocated_blocks'], 64) | ||
if not is_pypy: | ||
self.assertGreaterEqual(stats['freed_blocks'], 64) | ||
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def test_get_blocks_max(self): | ||
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): | ||
for i in [0, 1, 10]: | ||
Image.core.set_blocks_max(i) | ||
blocks_max = Image.core.get_blocks_max() | ||
self.assertEqual(blocks_max, i) | ||
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# Try to construct new image | ||
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") | ||
def test_set_blocks_max_stats(self): | ||
Image.core.reset_stats() | ||
Image.core.set_blocks_max(128) | ||
Image.core.set_block_size(4096) | ||
Image.new('RGB', (256, 256)) | ||
Image.new('RGB', (256, 256)) | ||
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stats = Image.core.get_stats() | ||
self.assertGreaterEqual(stats['new_count'], 2) | ||
self.assertGreaterEqual(stats['allocated_blocks'], 64) | ||
self.assertGreaterEqual(stats['reused_blocks'], 64) | ||
self.assertEqual(stats['freed_blocks'], 0) | ||
self.assertEqual(stats['blocks_cached'], 64) | ||
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@unittest.skipIf(is_pypy, "images are not collected") | ||
def test_clear_cache_stats(self): | ||
Image.core.reset_stats() | ||
Image.core.clear_cache() | ||
Image.core.set_blocks_max(128) | ||
Image.core.set_block_size(4096) | ||
Image.new('RGB', (256, 256)) | ||
Image.new('RGB', (256, 256)) | ||
Image.core.clear_cache() | ||
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stats = Image.core.get_stats() | ||
self.assertGreaterEqual(stats['new_count'], 2) | ||
self.assertGreaterEqual(stats['allocated_blocks'], 64) | ||
self.assertGreaterEqual(stats['reused_blocks'], 64) | ||
self.assertGreaterEqual(stats['freed_blocks'], 64) | ||
self.assertEqual(stats['blocks_cached'], 0) | ||
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def test_large_images(self): | ||
Image.core.reset_stats() | ||
Image.core.set_blocks_max(0) | ||
Image.core.set_block_size(4096) | ||
Image.new('RGB', (2048, 16)) | ||
Image.core.clear_cache() | ||
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stats = Image.core.get_stats() | ||
self.assertGreaterEqual(stats['new_count'], 1) | ||
self.assertGreaterEqual(stats['allocated_blocks'], 16) | ||
self.assertGreaterEqual(stats['reused_blocks'], 0) | ||
self.assertEqual(stats['blocks_cached'], 0) | ||
if not is_pypy: | ||
self.assertGreaterEqual(stats['freed_blocks'], 16) | ||
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class TestEnvVars(PillowTestCase): | ||
def tearDown(self): | ||
# Restore default values | ||
Image.core.set_alignment(1) | ||
Image.core.set_block_size(1024*1024) | ||
Image.core.set_blocks_max(0) | ||
Image.core.clear_cache() | ||
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def test_units(self): | ||
Image._apply_env_variables({'PILLOW_BLOCKS_MAX': '2K'}) | ||
self.assertEqual(Image.core.get_blocks_max(), 2*1024) | ||
Image._apply_env_variables({'PILLOW_BLOCK_SIZE': '2m'}) | ||
self.assertEqual(Image.core.get_block_size(), 2*1024*1024) | ||
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def test_warnings(self): | ||
self.assert_warning( | ||
UserWarning, Image._apply_env_variables, | ||
{'PILLOW_ALIGNMENT': '15'}) | ||
self.assert_warning( | ||
UserWarning, Image._apply_env_variables, | ||
{'PILLOW_BLOCK_SIZE': '1024'}) | ||
self.assert_warning( | ||
UserWarning, Image._apply_env_variables, | ||
{'PILLOW_BLOCKS_MAX': 'wat'}) |
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