def testcalculate_composition(self):
# Wildcard
composition = Material.calculate_composition({29: 0.7, 30: '?'})
self.assertIn(29, composition)
self.assertAlmostEqual(0.7, composition[29], 4)
self.assertIn(30, composition)
self.assertAlmostEqual(0.3, composition[30], 4)
# Multiple wildcards
composition = Material.calculate_composition({29: '?', 30: '?'})
self.assertIn(29, composition)
self.assertAlmostEqual(0.5, composition[29], 4)
self.assertIn(30, composition)
self.assertAlmostEqual(0.5, composition[30], 4)
