def test_calculate_size_with_one_source_size_getter(self):
bm = BufferManager()
size_getter = lambda t, b: 10 * t + b
view_factory = lambda x, t, b: x
bm.add({'foo': (size_getter, view_factory)}, {})
bm.set_dimensions(1, 1)
self.assertEqual(bm.calculate_size(), 11)
bm.set_dimensions(10, 5)
self.assertEqual(bm.calculate_size(), 105)
bm.set_dimensions(2, 3)
self.assertEqual(bm.calculate_size(), 23)
def test_calculate_size_with_multiple_size_getters(self):
bm = BufferManager()
sg1 = lambda t, b: 10 * t + b
sg2 = lambda t, b: 1000 * t + 100 * b
sg3 = lambda t, b: 100000 * t + 10000 * b
view_factory = lambda x, t, b: x
bm.add({'foo1': (sg1, view_factory)}, {})
bm.add({'foo2': (sg2, view_factory)}, {})
bm.add({'foo3': (sg3, view_factory)}, {})
bm.set_dimensions(1, 1)
self.assertEqual(bm.calculate_size(), 111111)
bm.set_dimensions(2, 3)
self.assertEqual(bm.calculate_size(), 232323)
