def test_concurrency(self):
concurrency = 42
vips = LibVips()
self.assertRaises(ValueError, vips.set_concurrency, processes=1.1)
self.assertRaises(ValueError, vips.set_concurrency, processes=-1)
self.assertEqual(vips.set_concurrency(processes=concurrency), None)
self.assertEqual(vips.get_concurrency(), concurrency)
def test_create(self):
self.assertTrue(LibVips())
self.assertRaises(OSError, LibVips, version=999)
