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import os
from unittest import TestCase
import psutil
import glcontext
class ContextTestCase(TestCase):
def test_create(self):
"""Basic context testing"""
# Create a standalone context
# os.environ['GLCONTEXT_WIN_LIBGL'] = 'moo.dll'
# os.environ['GLCONTEXT_LINUX_LIBGL'] = 'ligGL.so.1'
# os.environ['GLCONTEXT_GLVERSION'] = '430'
backend = glcontext.default_backend()
ctx = backend(mode='standalone', glversion=330)
# Ensure methods are present
self.assertTrue(callable(ctx.load))
self.assertTrue(callable(ctx.release))
self.assertTrue(callable(ctx.__enter__))
self.assertTrue(callable(ctx.__exit__))
# Enter and exit context
with ctx:
pass
# Ensure method loading works
ptr = ctx.load('glEnable')
self.assertIsInstance(ptr, int)
self.assertGreater(ptr, 0)
# Load non-existent gl method
# NOTE: Disabled for now since x11 returns positive values
# for non-existent methods
# ptr = ctx.load('bogus')
# self.assertIsInstance(ptr, int)
# self.assertEqual(ptr, 0)
def test_mass_create(self):
"""Create and destroy a large quantity of contexts.
The rss memory usage should not grow more than 5x
after allocating 1000 contexts.
"""
process = psutil.Process(os.getpid())
start_rss = process.memory_info().rss
for i in range(1000):
ctx = glcontext.default_backend()(mode='standalone', glversion=330)
# Ensure we can enter context and load a method as a minimum
with ctx:
self.assertGreater(ctx.load('glBegin'), 0)
ctx.release()
end_rss = process.memory_info().rss
self.assertTrue(end_rss / start_rss < 5.0)
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