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https://github.com/python-pillow/Pillow.git
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2c50723f14
To better follow conventional pytest style, this removes the outer wrapper class in favor of a function for some tests. These tests were picked as they are relatively simple and presented no barriers to a quick port. The assert* methods are replaced with assert statements. When necessary, a fixture is used to create a temporary directory. This commit does not convert the entire test suite to this style as some test classes use methods or other advanced features that are difficult to automatically convert. The goal is to address these issues in followup commits. Refs #4193
181 lines
6.0 KiB
Python
181 lines
6.0 KiB
Python
import sys
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import unittest
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from PIL import Image
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from .helper import PillowTestCase, is_pypy
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def test_get_stats():
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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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assert "new_count" in stats
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assert "reused_blocks" in stats
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assert "freed_blocks" in stats
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assert "allocated_blocks" in stats
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assert "reallocated_blocks" in stats
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assert "blocks_cached" in stats
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def test_reset_stats():
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Image.core.reset_stats()
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stats = Image.core.get_stats()
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assert stats["new_count"] == 0
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assert stats["reused_blocks"] == 0
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assert stats["freed_blocks"] == 0
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assert stats["allocated_blocks"] == 0
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assert stats["reallocated_blocks"] == 0
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assert 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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