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https://github.com/python-pillow/Pillow.git
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d50445ff30
Similar to the recent adoption of Black. isort is a Python utility to sort imports alphabetically and automatically separate into sections. By using isort, contributors can quickly and automatically conform to the projects style without thinking. Just let the tool do it. Uses the configuration recommended by the Black to avoid conflicts of style. Rewrite TestImageQt.test_deprecated to no rely on import order.
184 lines
6.3 KiB
Python
184 lines
6.3 KiB
Python
from __future__ import division, print_function
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import sys
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from PIL import Image
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from .helper import PillowTestCase, unittest
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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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if sys.maxsize < 2 ** 32:
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self.assertRaises(ValueError, Image.core.set_blocks_max, 2 ** 29)
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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, {"PILLOW_ALIGNMENT": "15"}
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)
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self.assert_warning(
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UserWarning, Image._apply_env_variables, {"PILLOW_BLOCK_SIZE": "1024"}
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)
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self.assert_warning(
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UserWarning, Image._apply_env_variables, {"PILLOW_BLOCKS_MAX": "wat"}
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)
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